MOTOROLA MC44BC373/374 Rev. 3.5 7/2003 MC44BC373/374 Multi-Standard or PAL/ NTSC Modulator with integrated antenna booster/splitter ICs Manual
Contents
1. ACK ACK Figure 13 SCL and SDA Bus Timing 13 5 12C Write Mode Format and Bus Receiver The bus receiver operates the PC compatible data format The chip address PC bus is 11001010 ACK CA hex in write mode In write mode each ninth data bit bits 9 18 27 36 and 45 is an acknowledge bit ACK during which the MCU sends a logic 1 and the Modulator circuit answers on the data line by pulling it low Besides the chip address the circuit needs two or four data bytes for operation The following data byte sequences are the permitted incoming information Example 1 Example 2 Example 3 Example 4 With STA STA STA STA STA Start condition FM Frequency information high order bits C1 Control information high order bits STO Stop condition CA CA CA CA C1 FM C1 FM CO STO FL STO CO FM FL STO FL C1 CO STO CA Chip Address FL Frequency information low order bits CO Control information low order bits After the chip address two or four data bytes may be received e If three 3 data bytes are received the third one is ignored e If five 5 or more data bytes are received the fifth and following ones are ignored and the last ACK pulse is sent at the end of the fourth data byte MOTOROLA MC44BC373 374 Technical Data 19 For More Information On This Product Go to www freescale com High Speed 12C Compatip Ee Scale Semiconductor Inc The first2. 5 a S oc ale eee eee he ae eee eS ical 3 yp 2 Minimum specification 4 TVOUT 1 T T T VCRTU 0 150 300 450 600 750 900 Frequency Mhz Isolation Output to Input Isolation Output to Output 30 10 40 me rt 20 E Spin ye Minimum specification Minimum specification 50 30 4 d 60 amp 40 am u a act Typical 70 50 yp 90 70 0 150 300 450 600 750 900 0 150 300 450 600 750 900 Frequency Mhz Frequency Mhz Figure 6 Typical Performance Gain and Isolation 12 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semicondy ctor Inc er Splitter Characteristics 11 2 Typical Performance Noise Figure Noise Figure Modulator OFF Noise Figure Modulator ON 11 T T T 12 Maximum specification Maximum specification s gem Typical dB a 0o N o dB o N o 0 150 300 450 600 750 900 0 150 300 450 600 750 900 Frequency Mhz Frequency Mhz Figure 7 Typical Performance Noise Figure 11 3 Intermodulation IMD Measurement BALUN TVOUT FI 31 50 75 eink am Spectrum Analyzer f io Pin 17 7 75 50 p gt F2 __1 VCRTU
3. MC44BC373 4 90dBuV rt mE N LL iL F1 F2 F2 F1 2F2 F1 Figure 8 Intermodulation IMD Measurement Intermodulation IMD frequencies are all frequency combinations coming from the two input carriers F1 and F2 F2 F1 2 F1 F2 2 F2 FI and F1 F2 fall in the 40 MHz 900MHz range F1 and F2 input levels are set to 90dBuV at the input of the BALUN F1 and F2 frequency generator levels 50W internal load take into account a 50 to 75Ohm load difference 1 8dB plus losses in the 3dB coupler and the 50 to 75Ohm transformer Intermodulation measurement is the difference in dBc between the F1 or F2 level at the Output VCRTU or TVOUT and the frequency combinations level for the following cases F1250MHz and F2260MHz F12100MHz and F2 110MHz F1 200MHz and F2 210MHz F1 300MHz and F2 310MHz F1 400MHz and F2 410MHz F1 500MHz and F2 510MHz F12600MHz and F2 610MHz F12700MHz and F22710MHz F12800MHz and F22810MHz Intermodulation specification is the IMD measurement s worst case MOTOROLA MC44BC373 374 Technical Data 13 For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Modulator Operation 12 Modulator Operation 12 1 Power ON Settings At power ON the MC44BC373 and MC44BC374 configuration is as follows WRITE MODE Bit7 Bit6 Bit5 Bit4 Bits Bit2 Bit1 BitO ACK C1 High Order Bits 1 0 0 0 0 0 0 0 ACK CO Low Order Bits 0 0 0 0
4. dO1 Figure 2 Simplified Block Diagram MC44BC373 374 MOTOROLA Go to www freescale com MC44BC373 374 Technical Data For More Information On This Product Freescale Semiconductor Inc 3 Maximum Ratings Sym Parameter Value Unit Vcc1 Supply Voltage 6 V Tamin Minimum Operating Ambient Temperature 10 C Tamax Maximum Operating Ambient Temperature 75 C Tstgmin Minimum Storage Temperature 65 C Tstgmax Maximum Storage Temperature 150 C Maximum Ratings This device contains protection circuitry to guard against damage due to high static voltage or electric fields However precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high impedance circuit For proper operation input and output voltages should be constrained to the ranges indicated in the Recommended Operating Conditions Maximum ratings are those values beyond which damage to the device may occur For functional operation voltage should be restricted to the Recommended Operating Condition 4 Electrostatic Discharge Sym Parameter Min Typ Unit ESD HBM Human Body Model MIL STD 883C Method 3015 7 4000 6000 V 5 Electrical Characteristics e A 100 Tested e B 100 Correlation tested e C Characterized on samples e D Design parameter 5 1 Specification Conditions Unless otherwise sta
5. RF 16 1 0 1 1 f DC drive applied to modulators non inverted video at TVOUT 1 1 0 1 g DC drive applied to modulators inverted video at TVOUT 1 1 1 1 4 Transient output inhibit disabled MOTOROLA MC44BC373 374 Technical Data For More Information On This Product Go to www freescale com I C Programming Freescale Semiconductor Inc WRITE MODE Test Mode 2 X5 X4 X3 State Description 0 2 a Normal operation 1 2 6 Test pattern generator DC verification Test pattern DC test mode available 0 1 0 2c Programmable divider test UHF programmable divider on PLLFILT pin and sound programmable divider on SPLLFIL pin 0 1 1 2 d Reference divider test UHF reference divider on PLLFILT pin UHF phase comparator upper source on PLLFILT pin 1 0 0 2 e Sound phase comparator 10uA upper source on SPLLFIL only valid during Transient Output Inhibit UHF phase comparator lower source on PLLFILT pin 1 0 1 2 f Sound phase comparator 10uA lower source on SPLLFIL only valid during Transient Output Inhibit 1 1 0 2 Sound phase comparator 1A upper source on SPLLFIL g not valid during Transient Output Inhibit 1 1 1 2h Sound phase comparator 1uA lower source on SPLLFIL not valid during Transient Output Inhibit READ MODE OOR Description 0 Normal operation VCO in range 1 VCO out of range Y1 Description 0 VCO out of range frequenc
6. 46 Minimum specification 471 521 571 621 671 721 771 821 871 Frequency Mhz Figure 5 Typical performance Audio MOTOROLA MC44BC373 374 Technical Data 11 For More Information On This Product Go to www freescale com Antenna Booster Splitter Freescale Semiconductor Inc 11 Antenna Booster Splitter Characteristics Unless otherwise stated V 25 0 V Ambient Temperature 25 C RF inputs outputs into 75 Ohm load All specifications use a BALUN at ANTI amp 2 inputs assuming 0 8dB losses MAX from 40MHz to 860 MHz Parameter Test Conditions Min Typ Max Unit Type Frequency range 40 860 MHz C Gain ANT1 2 to VCRTU 4 u dB B ANT1 2 to TVOUT 4 dB B Gain flatness 40 to 860MHz 1 5 11 5 dB C Noise figure PANT Cedo NEBL an POUT 55 75 95 dB C Modulator in standby mode ANT1 2 to VCRTU and TVOUT Boise gura Modulator in normal mode ON 6 9 Bes Ta ap B All pins BST bias ON 1 5 2 5 m B VSWR At TVout and VCRTU pins BST bias OFF At TVin pins BST bias OFF 2 5 3 B intermodulation Input level 90dBuV See IMD measurement section IMD F1 F2 IMD 55 47 dBc C 2F1 F2 2F2 F1 F1 F2 IMD 60 50 dBc C isol tions From TVOUT or VCR to ANT1 2 48 60 dBc C TVOUT VCRTU 30 45 dBc C 11 1 Typical Performance Gain and Isolation Gain ANT1 2 to VCRTU and TVOUT y4 6 Maximum specification
7. 1 0 0 0 ACK FM High Order Bits 0 0 N11 N10 N9 N8 N7 N6 ACK FL Low Order Bits N5 N4 N3 N2 N1 NO 0 0 ACK Note 1 NO to N11 are set to have the UHF oscillator on channel 36 591 25 MHz Note 2 Peak White Clip is ON Note 3 Sound frequency is 5 5 MHz Note 4 Sound auxiliary input is disabled Note 5 Logic Output Port is low voltage Note 6 Picture to sound ratio is 12dB The settings indicated can be customized in the special masked version 12 2 Power Supply The five device Vcc pins 13 15 16 21 23 must be applied at the same time to ensure all internal blocks are correctly biased All other pins must not be biased before Vcc is applied to the device The printed circuit board layout of the Vcc supplies must be designed to ensure maximum isolation of the I P to O P and also between the two O Ps 12 3 Standby Mode During standby mode the modulator is switched to low power consumption the sound oscillator UHF oscillator video and sound modulator sections bias are internally turned OFF The C bus and booster sections remain active The modulator can be programmed in standby mode using a combination of three bits 1 OSC 1 2 SO 1 3 ATT 1 14 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Modulator Operation 12 4 Test Bit TB1 This test bit allows an initial evaluation of MC44BC3
8. and third data bytes contain a function bit which lets the IC distinguish between frequency information and control information If the function bit is a logic 1 the two following bytes contain control information The first data byte after the chip address may be byte CO or byte FM The two bytes of frequency information are preceded by a logic 0 13 6 1 C Read Mode Format The chip address PC is 110010411 ACK CB hex in read mode The incoming information consists of the read mode chip address byte The device then answers with an ACK followed by one byte containing three bits of status information No acknowledge is answered by the modulator after this byte 20 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc snd Gace Disuprirti 14 Application and Case Diagrams Proposed BiCMOS Modulator and Booster Splitter Application This document contains information on a new product under development Motorola reserves the right to change or discontinue this product without notice SDA SCL Vcc Note 2 2 2k 22nF 22 Cx 47nF 4MHz Hi Note 1 E 10nF Hi il 20 add s a LOPO 1nF 1nF INE T 8 17 a VCRTU Pre em iH p 9 16 10nF c 10 H tone 11 14 Video 100nF 220nF 100nF Hi 75 22nF 15k J Audio Auxin Vcc Note 1 Cx value depends on crystal characteristics Cx 27 pF on Motorola application board Note 2 Loop filter com
9. programmable sound subcarrier oscillator 4 5MHz to 6 5 MHz No external varicaps e On chip video test pattern generator with sound test signal 1kHz e Low power programmable modulator standby mode booster active e Transient output inhibit during PLL Lock up at Power ON e Logical Output Port controlled by bus e Integrated Antenna Booster Splitter 40 MHz to 860MHz e Custom masked versions with unique start up settings possible no PC bus programming required e Extremely robust ESD protection minimum 4kV typical 6kV 2 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Device Overview 2 Device Overview Figure 2 shows a simplified block diagram of the MC44BC373 4 device The MC44BC373 374 device contains four main sections 1 2 A high speed PC compatible bus section A PLL section Synthesizes the UHF VHF output channel frequency from an integrated UHF oscillator divided for VHF output A modulator section Accepts audio and video inputs and then uses those inputs to modulate the UHF VHF carrier An Antenna Booster Splitter Amplifies and splits the antenna signal into two signals a The modulated signal is added to the amplified antenna signal on the TVOUT pin a The following items are programmable using the high speed PC compatible bus Channel frequency Sound frequency Sound picture carrier ratio A
10. reserved For More Information On This Product Go to www freescale com F Freescale Semiconductor Inc eatures 1 Features MC44BC373 Multi Standard PAL SECAM NTSC with integrated booster splitter MC44BC374 PAL NTSC with integrated booster splitter The channel is set by an on chip high speed PC compatible bus receiver A Phase Locked Loop PLL tunes the modulator over the full UHF range The modulator incorporates a sound subcarrier oscillator and uses a second PLL to derive 4 5 5 5 6 0 and 6 5 MHz subcarrier frequencies These frequencies are selected using the bus The picture to sound ratio is adjusted using the bus In addition an on chip video test pattern generator can be switched ON using a 1 kHz audio test signal Along with the modulator functions an Antenna Booster Splitter function is included These modulator versions are completely pin to pin and software compatible and all versions have the following features e No external varicaps diodes inductors or tuned components e Channel 21 69 UHF operation e VHF range possible by internal dividers 30 MHz to 450MHz Integrated on chip programmable UHF oscillator e Extremely low external component count e High speed read and write I C bus compatible 800kHz e Fixed video modulation depth 80 in PAL and 90 in SECAM e Peak White Clip disabled using the bus e Programmable picture sound carrier ratio 12dB and 16dB e Integrated on chip
11. 1 BitO ACK CHIP ADDRESS 1 1 0 0 1 0 1 1 ACK R Status Byte Y2 Y1 OOR Bit Name Description PWC Peak White Clip enable disable OSC UHF oscillator ON OFF ATT Modulator output attenuated sound and video modulators ON OFF SFDO 1 Sound subcarrier frequency control bits TB1 Test mode bit bus format compatible with MC44353 AUX Auxiliary sound input enable disable SO Sound Oscillator ON OFF LOP Logic Output Port PS Picture to Sound carrier ratio SYSL System L enable selects AM sound and positive video modulation MC44BC373 only TPEN Test pattern enable picture and sound X5 X0 Test mode bits All bits are 0 for normal operation see Test Mode tables page 7 amp page 8 NO N11 UHF frequency programming bits in steps of 250kHz OOR RF oscillator out of frequency range information Y1 Y2 RF oscillator operating range information 6 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc 7 C Programming I C Programming Sound UHF SFD1 SFDO Sound Subcarrier Freq MHz osc UHF Oscillator 0 0 4 5 0 Normal operation 0 1 5 5 1 UHF oscillator disabled oscillator and PLL 1 0 6 0 sections bias turned OFF 1 1 6 5 ATT Modulator Output Attenuation PS Picture t
12. 73 and MC44BC374 using software developed for MC443535 e TB1l 0 All MC44BC373 374 functions available normal mode e TB1 1 Limited software compatibility with MC44353 MC44BC373 374 functions not available WRITE MODE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 ACK CA CHIP ADDRESS 1 1 0 0 1 0 1 0 ACK C1 High Order Bits 1 PS SYSL ACK CO Low Order Bits SFD1 SFDO 1 0 0 ACK FM High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK FL Low Order Bits N5 N4 N3 N2 N1 NO ACK Note 1 Case TB1 1 compatible with MC44353 Note 2 All are don t care bits Note 3 PS bit replaces PSD2 bit in MC44353 bus format PS 0 is for picture to sound ratio 12dB PS 1 is for picture to sound ratio 16dB Note 4 SFD1 and SFDO bits have the same definition for both bus formats MC44353 and MC44BC373 374 and lets a sound frequency between 4 5MHz 5MHz 5 5 MHz and 6 5 MHz be selected Note 5 SYSL bit has same definition for bus formats MC44353 and MC44BC373 374 either system L or B G is selectable Note 6 All MC44BC373 374 functions are set to their default values 12 5 System L or B G Selection SYSL bit internally switches the following functions e SYSL 20 enables B G system Video modulation polarity Negative Video modulation depth 8046 Typical See Video Characteristics on page 10 Sound modulation type FM e SYS
13. AHM C44BC373 4 IVE Freescale Semiconductor Inc Technical Data ef ej digital dna MOTOROLA intelligence everywhere MC44BC373 374 MCA44BC373 374 Rev 3 5 7 2003 MC44BC373 374 Multi Standard or PAL NTSC Modulator with integrated antenna booster splitter ICs TSSOP 24 Package Ordering Information Device Temp Range Package MC44BC373DTB R2 MC44BC374DTB R2 10 C to 80 C TSSOP24 NOTE For tape and reel add R2 suffix Contents These modulator ICs are for use in VCRs games set top boxes and similar devices 1 Features 2 a Derice venian A 3 Figure shows the pin connections 3 Maximum Ratings 5 4 Electrostatic Discharge 5 5 Electrical SCL 1 GNDD Characteristics 5 SDA 2 vccD 6 IC Bit Mapping 6 Lop 3 PLLFLT 2 7 lCProgramming 7 XTAL 4 TVOVCC 8 Modulator High Frequency GND 5 TVOUT Characteristics 9 ANT1 6 GND 9 Video Characteristics 10 ANT2 7 GND 10 Audio Characteristics 11 11 Antenna Booster Splitter GND 8 VERTU Characteristics 12 PREEM 9 VCRVCC 12 Modulator Operation 14 AUDIO VCCA 13 High Speed C Compatible Bus 18 SPLFLT VIDEQ 14 Application and AUXIN vccl Case Diagrams 21 Figure 1 MC44BC373 374 Pin Connections This document contains information on a product under development Motorola reserves the right to change or discontinue this product without notice Motorola Inc 2003 All rights
14. Bes iud 0 019 protrusions and adjacent lead to be 0 14 0 006 L 6 25 6 50 0 246 0 256 M 0 8 0 8 Figure 15 TSSOP24 Package 22 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com MOTOROLA Freescale Semiconductor Inc NOTES MC44BC373 374 Technical Data For More Information On This Product Go to www freescale com 23 Freescale Semiconductor Inc HOW TO REACH US USA EUROPE LOCATIONS NOT LISTED Motorola Literature Distribution P O Box 5405 Denver Colorado 80217 1 303 675 2140 or 1 800 441 2447 JAPAN Motorola Japan Ltd SPS Technical Information Center 3 20 1 Minami Azabu Minato ku Tokyo 106 8573 Japan 81 3 3440 3569 ASIA PACIFIC Motorola Semiconductors H K Ltd Silicon Harbour Centre 2 Dai King Street Tai Po Industrial Estate Tai Po N T Hong Kong 852 26668334 TECHNICAL INFORMATION CENTER 1 800 521 6274 HOME PAGE http Awww motorola com semiconductors Information in this document is provided solely to enable system and software implementers to use Motorola products There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document Motorola reserves the right to make changes without further notice to any products herein Motorola makes no warranty representation or guarantee regarding
15. L 1 enables L system Video modulation polarity Positive Video modulation depth 9046 Typical See Video Characteristics on page 10 Sound modulation type AM 12 6 Transient Output Inhibit To minimize the risk of interference to other channels while the UHF PLL is acquiring a lock on the desired frequency the Sound and Video modulators are turned OFF for each of the following two cases 1 Power ON from zero i e all Vcc is switched from OV to 5V 2 UHF oscillator power ON from OFF state 1 e OSC bit is switched from 1 to 0 MOTOROLA MC44BC373 374 Technical Data 15 For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Modulator Operation There is a time out of 263 ms until the output is enabled This allows the UHF PLL settle to its programmed frequency During the 263ms time out the sound PLL current source is set to OWA typical to speed up the locking time After the 263 ms time out the current source is switched to 1 uA CAUTION Use care when selecting loop filter components to ensure the loop transient does not exceed the specified delay For test purposes it is possible to disable the 263 ms delay using Test Mode 1 State 1 h 12 7 Logic Output Port LOP The LOP pin controls any logic function The primary applications are to control an external attenuator or an external switch between the antenna input and TV output When an external switch is controll
16. Max Unit Type Video bandwidth Helclenee OUPA TUOKNE 1 5 0 8 dB c measured at 5MHz Video input level 75Ohm load 1 5 Vevbs D Video input current nd 0 2 1 uA A Video input impedance 500 KQ A Peak White Clip PWC bit set to 1 see PWC section 110 114 118 A Video S N See Figure 4 50 53 dB C Differential Phase See Figure 4 5 5 deg C Differential Gain On line CCIR 310 worst of first 4 out _5 _ 5 C of 5 steps See Figure 4 Luma Sync ratio Input ratio 7 0 3 0 6 8 3 2 7 2 2 8 B PAL video modulation depth 75 81 88 B SECAM video modulation depth 88 93 99 B Video Signal to Noise 58 56 Typical m o 52 50 48 Minimum specification 471 521 571 621 671 721 771 821 871 Frequency Mhz PAL Video Modulation Depth SECAM Video Modulation Depth 90 100 88 98 86 D 84 Maximum specification 96 Maximum specification 94 Jis Typical 8 Typical 2 ds ypica 80 78 90 88 76 iE LS L Minimum specification 74 Minimum specification 86 471 521 571 621 671 721 771 821 871 471 521 571 621 671 721 771 821 871 Frequency Mhz Frequency Mhz Figure 4 Typical Performance Video 10 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Audio Ch
17. aged The programmable divider s division ratio is controlled by the state of control bits NO to N11 The divider ratio N for a desired frequency F in MHz is provided by the following formulas with N 2048 x N11 1024xN10 4xN2 2xN1 NO0 12 12 UHF Oscillator VHF Range The UHF oscillator is fully integrated and does not require any external components For low frequency testing or VHF range operation test mode 1 states 1 b to 1 c the UHF oscillator can be internally divided by 2 4 8 or 16 MOTOROLA MC44BC373 374 Technical Data 17 For More Information On This Product Go to www freescale com High Speed I C Compatibls BES 13 High Speed I2C Compatible Bus 13 1 Specification Conditions escale Semiconductor Inc Unless otherwise specified the Vccl 5 0V and the ambient temperature TA 25 C Electrical Characteristics Min Typ Max Unit Type SDA SCL output current at 0 V 10 uA A SDA SCL low input level 1 5 V B SDA SCL high input level 3 0 m E V B SDA SCL input current for input level from 0 4V to 0 3Vcc 5 5 uA C SDA SCL input level 0 Vcc403 V D SDA SCL capacitance 10 pF C ACK low output level sinking 3mA 0 3 1 V A ACK low output level sinking 15mA 1 5 V C Timing Characteristics Min Typ Max Unit Type Bus clock freque
18. aracteristics 10 Audio Characteristics Unless otherwise stated V 25 0 V Ambient Temperature 225 C Video Input 1Vp p 10 step grayscale RF inputs outputs into 75 Ohm load SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION Parameter Test Conditions Min Typ Max Unit Type PS bit set to O 13 16 19 Picture to Sound ratio PS bit set to 1 9 12 15 dB B Using specific pre emphasis circuit audio input level 2Z205mVrms audio frequency 1 kHz AM modulation SECAM Fs 6 5MHz 65 80 95 96 B Audio modulation depth FM modulation Fs 5 5 6 or 6 5MHz 100 modulation 50kHz FM deviation FM modulation NTSC Fs 4 5MHz 65 80 95 B o 100 modulation 25kHz FM deviation en 99 e B Audio input resistance 45 53 61 KQ A Reference OdB at 1kHz Audio Frequency response using specified pre emphasis circuit measure from 50Hz to 15kHz 2 5 2 dB C z Audio Distortion FM THD only RUAN 100 modulation CESURPIE o4 2 9 C gt Audio Distortion AM THD only ae 1007s mmodulatign 15 25 D i i O Audio S N with Sync Buzz FM We orcas 48 53 dB C Reference 1 kHz 85 modulation i i O Audio S N with Sync Buzz AM ideo input EBU color bar 75 45 50 dB D Audio BW from 40Hz to 15kHz Weighting filter CCIR 468 2 Audio Signal to Noise 58 56 54 Typical a t ee ms52 50
19. ed the Booster function is not used The following figure shows a typical attenuator application with PIN diode The LOP pin switches the PIN attenuator depending on the signal strength of the Antenna Input thereby reducing the risks of Intermodulation in certain areas The LOP may also be used as an OFF position bypass switch or for other logic functions in the application Vcc Antenna Input i iul O TV Out LOP pin Figure 9 Attenuator Application with PIN Diode 12 8 Video Section Peak White Clip The modulator requires the following Acomposite video input with negative going sync pulses e A nominal level of 1 Vp p This signal is AC coupled to the video input where the sync tip level is clamped The video signal is then passed to a Peak White Clip PWC circuit The PWC circuit function sets to soft clip the top of the video waveform if the sync tip amplitude to peak white clip goes too high This method avoids carrier over modulation by the video Clipping can be disabled by software 12 9 Sound Section The multivibrator oscillator is fully integrated and does not require external components An internal low pass filter and matched structure provide a very low harmonics level The sound modulator system consists of an FM modulator incorporating the sound subcarrier oscillator and an AM modulator The audio input signal is AC coupled into the amplifier which t
20. hen drives the two types of modulators The audio pre emphasis circuit is a high pass filter with an external capacitor and an internal resistor 100kOhms The recommended capacitor value 470pF is for BG standard SOUS time constant 16 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Modulator Operation The auxiliary audio input adds a sound subcarrier to the main carrier The input can be a modulated NICAM carrier or a second sound subcarrier for a stereo system Pin 12 is directly connected to the sound modulator input and the picture to sound ratio P S Ratio depends on the auxiliary audio input level P S ratio is 20dB for 35mVrms typical 12 10 Test Pattern Generator A simple test pattern is generated on the IC which can be switched in under bus control to permit a TV receiver to easily tune in to the modulator output The pattern consists of two white vertical bars on a black background and a 976Hz audio test signal i TE2 7 0 ry 3 10 tL ITE 0 10 20 24 2830 40 44 50 60 64 TIME IN pS Figure 10 Test Pattern Generator Time in Seconds 12 11 PLL Section The reference divider is a fixed divide by 128 resulting in a reference frequency of 31 25KHz with a 4 0MHz crystal The 31 25KHz reference frequency is used for both UHF and Sound PLLs The prescaler is a fixed divide by 8 and is permanently eng
21. n on chip video test pattern generator with an audio test signal is included The MC44BC373 operates as a multi standard modulator and can handle the following systems using the same external circuit components B G M N The high frequency BiCMOS technology permits integration of the following functions Antenna Booster Splitter UHF tank circuit and certain filtering MOTOROLA MC44BC373 374 Technical Data 3 For More Information On This Product Go to www freescale com Freescale Semiconductor Inc Device Overview sna 9 t g 19 eosoJgd TVLX 114T1d b ZHAGS LE HEN TEES ae Td L J 9SO 4HN SIPING SHA NOILO3S T1d Pub ODA Lp IC BUS NI XNY CY r JOye npol wN NY 9d 1 voona GL ial y JeplAI F Bold 4 JOoje npol A Jeyinduv N4 pue ddd Wad Of Sony aoso punos punos NOILOAS due YOLV INGON 56 OACIA 114d7T1dS JOje npo N punos aaN9 Q299A JOAIQ00Y sna Ozi peedg ubi lt CL 195 NOILO3S S8 Joye npoy OOplA i sna og o2 LNOAL t SONOAL Uc 87 ano Nowoas ano isa
22. ncy 0 800 kHz C Bus free time between stop and start 200 ns C Setup time for start condition 500 ns C Hold time for start condition 500 ns C Data setup time 0 ns C Data hold time 0 ns C Setup time for stop condition 500 ns C Hold time for stop condition 500 ns C Acknowledge propagation delay 300 ns C SDA fall time at 3ma sink and 130pF load 50 ns C SDA fall time at 3ma sink and 400pF load 80 ns C SDA rise time 300 ns C SCL fall rise time 300 ns C Pulse width of spikes suppressed by the input filter 50 ns C 13 2 Timing Definitions Stop Es Start ACK Start Stop a J Chip Address n T J b SSDA l o SDA SDA sscL 01 fu sch sa 7 SL e a L Pie Se o ile m Tsu sto Thd sta Tsu dat Thd dat Tack low Tsu sta Thd sto Figure 11 SSDA SSCL Timing 18 MC44BC373 374 Technical Data MOTOROLA For More Information On This Product Go to www freescale com Freescale Semiconductor 13 3 Levels Definition SDA MS seed I C Compatible Bus Vcc Vih i dead band Vil OV Figure 12 SDA Levels 13 4 High Speed I C Compatible Bus Format SCL i i 1 2 3 4 5 6 7 8 91011 12 13 14 15 16 17 18 19 44 45 STA Chip Address CA First Data Byte C1 or FM Data ACK SDA
23. o Sound Ratio dB 0 _ Normal operation 0 12 1 Modulator output attenuation sound and T video modulators sections bias turned OFF Standby Mode SO Sound Oscillator 0 Sound oscillator ON normal mode OSC SO ATT Combination of 3 bits 1 Sound oscillation disabled oscillator and PLL Modulator standby mode sound section bias turned OFF and UHF oscillator sound and m 1 1 1 video modulator section bias in Auxiliary Audio Input turned OFF and I C bus section 0 AUX input disabled normal mode standby mode BST is active 1 AUX input enabled MC44353 4 5 Compatibility Video TB1 Description System L and B G Selection O Normal mode fully programmable SYSL MC44BC373 onl y 1 Limited programmability and compatibility with System B G enabled System L disabled MC44353 0 ae FM sound and negative video modulation Logic Output Port 1 System L enabled System B G disabled AM sound and positive video modulation LOP Description PWG Paak White olip 0 Pin 3 is low voltage 0 Peak White Clip ON System B G 1 Pin 3 is high impedance 1 Peak White Clip OFF System L TPEN Test Pattern Signal 0 Test pattern signal OFF normal operation WRITE MODE Test Mode 1 and VHF Range x2 X1 X0 State Description 0 0 0 1 a Normal operation 0 0 1 1 b RF frequency divided for low frequency testing or VHF range RF 2 0 1 0 1 c RF 4 0 1 1 1 d RF 8 1 0 0 1 e
24. ola was negligent regarding the design or manufacture of the part MOTOROLA Motorola and the Stylized M Logo are registered in the U S Patent and Trademark Office All other product or service names are the property of their respective owners Motorola Inc is an Equal Opportunity Affirmative Action Employer Motorola Inc 2003 MC44BC373 D For More Information On This Product Go to www freescale com
25. ponents must be as close as possible to pins 22 and 23 Figure 14 Proposed BiCMOS Modulator and Booster Splitter Application MOTOROLA MC44BC373 374 Technical Data For More Information On This Product Go to www freescale com 21 Freescale Semiconductor Inc Application and Case Diagrams C 0 076 0 003 SEATING PLANE CA PARTING LINE es ON FT BASE METAL SECTION P P DETAIL N CASE 940H 02 ISSUE A Millimeters Inches Note 1 Dimensioning and Tolerancing per ANSI Dim ai T F Y14 5M 1982 a m d m 7 Note 2 Controlling dimension Millimeters A 7 70 7 90 0 303 0 311 Note 3 Dimensions A and B do not include mold flash B 4 30 4 48 0 169 0 176 or protrusions and are measured at the parting line Mold C 0 95 0 037 bis or protrusions shall not exceed 0 15 0 006 per D 0 95 0 15 9 902 0 099 Note 4 Dimension is the length of terminal for soldering F 0 51 0 71 0 020 0 028 to a substrate G 0 65 BSC 0 026 BSC Note 5 Terminal positions are shown for reference H 0 27 0 37 0 011 0 015 Only J 0 09 0 18 0 003 0 007 Note 6 The lead width dimension does not include Dambar protrusion Allowable Dambar protrusion shall be J1 0 09 0 13 0 003 0 005 0 08 0 003 total in excess of the lead width dimension at K 0 19 0 30 0 007 0 012 maximum material condition Dambar can not be located on the lower radius or the foot Minimum space between ii 019
26. purious Fo 5MHz No video sound modulation 60 dBc C NOTE 1 Picture carrier harmonics are highly dependant on printed circuit board layout and decoupling capacitors 2Fo Harmonics 3Fo Harmonics 40 45 Typical 35 40 a0 35 g Typical amp 30 9 25 T ge M Minimum specification 15 Minimum specification 471 521 571 621 671 721 771 821 871 Ari S21 S71 G21 6 1 21 771 821 873 Frequency Mhz Frequency Mhz TV Output Level TV Output Attenuation 78 75 Maximum specification 77 70 76 65 gt i 3 75 moe d 60 Typical Uo o 74 55 70 M MM M 50 72 Minimum specification 45 Minimum specification 471 521 571 621 671 721 771 821 871 471 521 571 621 671 721 771 821 871 Frequency Mhz Frequency Mhz Figure 3 Typical Performance Modulator High Frequency MOTOROLA MC44BC373 374 Technical Data 9 For More Information On This Product Go to www freescale com T Freescale Semiconductor Inc Video Characteristics 9 Video Characteristics Unless otherwise stated V 25 0 V Ambient Temperature 225 C Video Input IV p 10 step grayscale RF inputs outputs into 75Ohm load SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION Parameter Test Conditions Min Typ
27. ted V 5 0V Ambient Temperature 25 C Video Input IV 10 step grayscale RF inputs outputs into 75 Ohm load SPECIFICATIONS ONLY VALID FOR ENVELOPE DEMODULATION Parameter Min Typ Max Unit Notes Type Operating supply voltage range 4 5 5 0 5 5 V B Total supply current 65 75 88 All sections active A OSC SO ATT 1 Total standby mode supply current 26 34 40 mA Bus Section active A Test pattern sync pulse width 3 4 7 6 5 uS B Sound comparator charge pump current During locking 7 10 12 uA A When locked 0 7 1 1 5 uA A RF comparator charge pump current 60 100 150 uA A Crystal oscillator stability negative resistance 1 KQ D Logic Output Port Saturation voltage at 2mA 160 300 mV A Leakage current 1 uA A MOTOROLA MC44BC373 374 Technical Data 5 For More Information On This Product Go to www freescale com C Bit Mapping Freescale Semiconductor Inc 6 I C Bit Mapping WRITE MODE Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 BitO ACK CA CHIP ADDRESS 1 1 0 0 i 0 1 0 ACK C1 High Order Bits 1 AUX SO LOP PS X3 X2 SYSL ACK CO Low Order Bits PWC OSC ATT SFD1 SFDO TB1 X5 X4 ACK FM High Order Bits 0 TPEN N11 N10 N9 N8 N7 N6 ACK FL Low Order Bits N5 N4 N3 N2 N1 NO X1 X0 ACK READ MODE Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit
28. the suitability of its products for any particular purpose nor does Motorola assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability including without limitation consequential or incidental damages Typical parameters which may be provided in Motorola data sheets and or specifications can and do vary in different applications and actual performance may vary over time All operating parameters including Typicals must be validated for each customer application by customer s technical experts Motorola does not convey any license under its patent rights nor the rights of others Motorola products are not designed intended or authorized for use as components in systems intended for surgical implant into the body or other applications intended to support or sustain life or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur Should Buyer purchase or use Motorola products for any such unintended or unauthorized application Buyer shall indemnify and hold Motorola and its officers employees subsidiaries affiliates and distributors harmless against all claims costs damages and expenses and reasonable attorney fees arising out of directly or indirectly any claim of personal injury or death associated with such unintended or unauthorized use even if such claim alleges that Motor
29. y too low only valid if OOR 1 1 VCO out of range frequency too high only valid if OOR 1 Y2 Description 0 High VCO is active 1 Low VCO is active MC44BC373 374 Technical Data For More Information On This Product Go to www freescale com MOTOROLA Freescale Semiconductor ale Gequency Characteristics 8 Modulator High Frequency Characteristics Unless otherwise stated V 5 0 V Ambient Temperature 25 C Video Input 1 V 10 step grayscale RF inputs outputs into 75 Ohm load SPECIFICATIONS VALID ONLY FOR ENVELOPE DEMODULATION Parameter Test Conditions Min Typ Max Unit Type TVOUT output level Output signal from modulator section 78 745 77 dBuV B See Figure 3 UHF oscillator frequency 460 880 MHz A VHF range From UHF oscillator internally divided 45 460 MHz B During transient output inhibit or TVOUT output attenuation when ATT bit is set to 1 See Figure 3 50 60 dBc B Sound subcarrier harmonics Fp n Fs Reference picture carrier 63 58 dBc C Second harmonic of chroma subcarrier Using red EBU bar 65 dBc C Chroma Sound intermodulation Fp Fsnd Fchr Using red EBU bar 65 dBc C ARE co a Fo picture carrier harmonics Other channels See Figure 3 20 26 dBc C See NOTE 1 i 1 2 Fo 1 4 Fo 3 2 Fo 3 4 Fo Out band picture carrier spurious From 40MHz to 1 GHz 0 10 dBuV C In band s
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MOTOROLA MC44BC373/374 Rev. 3.5 7/2003 MC44BC373/374 Multi Standard or PAL/ NTSC Modulator with inte