MAXIM MAX11508/MAX11509 handbook
Contents
1. MAX11508 MAX11509 MAX11509 HD PASSBAND RESPONSE HD FREQUENCY RESPONSE HD PASSBAND RESPONSE 7 10 7 5 2 5 3 10 S 3 Ss d Z g 20 2 B 3 gw Eu 40 4 4 50 1 3 60 3 0 1 10 100 0 1 1 0 100 0 1 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz MAX11508 MAX11508 MAX11509 BP FREQUENCY RESPONSE BP PASSBAND RESPONSE BP FREQUENCY RESPONSE x T i i LEM E b 1 10 S 3 g z 27 95 30 A 4 95 30 4 40 1 5 50 60 3 60 0 1 10 100 0 1 1 0 100 0 1 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz MAX11509 MAX11508 MAX11509 BP PASSBAND RESPONSE SD GROUP DELAY vs FREQUENCY SD GROUP DELAY vs FREQUENCY 7 120 120 g 100 3 100 8 80 m 2 g E o 22 Ped z By a 40 amp 40 20 20 1 0 20 3 20 04 0 00 0 1 10 100 0 1 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz 5 60SLLXVMW 80SLLXVIMW MAX11508 MAX11509 Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Typical Operating Characteristics continued Vcc 52. FREQUENCY MHz MAX11509 SD DIFFERENTIAL GAIN NTSC STEP 100 MAX11508 toc27 MAALM Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Typical Operating Characteristics continued Vcc 5V RL 1500 to GND output DC coupled TA 25 C unless otherwise noted MAX11509 MAX11508 MAX11509 SD DIFFERENTIAL PHASE NTSC SD 2T RESPONSE SD 2T RESPONSE 1 0 MAX11508 toc29 MAX11508 toc30 08 B 06 E 04 a X 02 n 0 z 0 2 04 t 0 6 0 8 10 1 2 3 4 5 6 7 200ns div 200ns div STEP CH1 INPUT 200mV div CH1 INPUT 200mV div CH2 OUTPUT AFTER BACKMATCH RESISTOR 200mV div CH2 OUTPUT AFTER BACKMATCH RESISTOR 200mV div Pin Description FUNCTION Power Supply Input Frequency Select Input LSB for bandwidth selection Video Input Channel 1 Pb B_IN Video Input Channel 2 Pr R_IN Video Input Channel 3 Bias Control Digital Input Enables voltage bias for the Pb B and Pr R channels Force BIAS low to BIAS enable voltage bias and disable the input clamps Force BIAS high to disable voltage bias and enable the input clamps No Connection Not internally connected Ground Shutdown Digital Input SHDN places the device into a powered down state Force SHDN low to enable shutdown Force SHDN high for normal operation SHDN Pr R OUT Video Output Channel 3 Pb B OUT Video Output Channel 2 Y G OUT Video Output Channel 1 FSEL
3. Package Information For the latest package outline information and land patterns go to www maxim ic com packages PACKAGE TYPE PACKAGE CODE DOCUMENT NO Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product No circuit patent licenses are implied Maxim reserves the right to change the circuitry and specifications without notice at any time 12 Maxim Integrated Products 120 San Gabriel Drive Sunnyvale CA 94086 408 737 7600 2008 Maxim Integrated Products MAXIM is registered trademark of Maxim Integrated Products Inc
4. 25 C MAX11509 Ta 25 C MAX11508 MAX1 1509 Stopband Attenuation f 27MHz Low Frequency Gain No load Differential Gain All channels i Differential Phase All channels 2 Degrees 1dB Bandwidth 3dB Bandwidth Total Harmonic Distortion Vout 1 4Vp p f 1MHz all channels dB 2Vp p signal to RMS noise f 100kHz to 4 2MHz Group Delay f 4 5MHz Power Supply Rejection Ratio DC all channels Signal to Noise Ratio 2 MAXIM Low Cost 3 Channel HD PS SD BP Video Filters with Buffer ELECTRICAL CHARACTERISTICS continued Vcc 5V RLOAD 1509 to GND 0 1pF TA 0 C to 85 C all frequency responses are relative to 100kHz unless other wise noted Note 1 PARAMETER SYMBOL CONDITIONS PROGRESSIVE SCAN VIDEO MAX11508 TA 25 MAX1 1509 1 MAX1 1508 MAX1 1509 Stopband Attenuation f 54MHz Low Frequency Gain Total Harmonic Distortion Vout 1 4Vp p f 7MHz 1dB Bandwidth 3dB Bandwidth 2Vp P signal to RMS noise f 100kHz to 15MHz Group Delay f 10MHz HIGH DEFINITION VIDEO Signal to Noise Ratio 1dB Bandwidth 3dB Bandwidth f 37 125MHz Stopband Attenuation f 44 25MHz f 74 25MHz Low Frequency Gain 1 4Vp p f 10M Total Harmonic Distortion VOUT 1 4Vp p f 15M Vout 1 4Vp p f 22M 2Vp p signal to RMS nois
5. Low Cost 3 Channel HD PS SD BP Video Filters with Buffer ABSOLUTE MAXIMUM RATINGS ME 0 3V to 6V Operating Temperature All Other Pins to 0 3V to the lower of Storage Temperature Range Vcc 0 3V and 6V Lead Temperature soldering 10s Continuous Power Dissipation TA 70 C Junction Termipetaetute cred a 14 Pin TSSOP derate 10mW C above 70 796 8mW Maximum Current into Any Pin Except Vcc and GND 50mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied Exposure to absolute maximum rating conditions for extended periods may affect device reliability ELECTRICAL CHARACTERISTICS Vcc 5V RLOAD 1509 to GND Cin 0 1pF TA 0 C to 85 C all frequency responses are relative to 100kHz unless other wise noted Note 1 PARAMETER SYMBOL CONDITIONS DC CHARACTERISTICS Supply Current No load Supply Voltage Range Input Voltage Range Referenced to GND if DC coupled BIAS high BIAS low Power Down Current Digital Input High Voltage Digital Input Low Voltage STANDARD DEFINITION VIDEO MAX11508 Ta
6. a standard 150 video load at 2Vp p A typical load consists of a 759 backmatch resistor an optional 220uF or larger coupling capacitor and a 759 termination resistor An offset of 550mV is added at the output The offset ensures that the blanking level on the output is less than 1V after the backmatch resistor thus meeting digi tal TV specifications allowing the devices to drive video loads directly without using costly AC coupling capaci tors The basic output voltage equation of all filters is VOUT 2 x VIN 0 55V Typical voltage waveforms are shown in Figures 2 and 3 AVLAZCLA Video Filters with Buffer Shutdown Forcing digital input SHDN low places the MAX11508 MAX11509 into low power shutdown mode In shut down the device consumes only 1 typ and the outputs are internally connected to GND through 1 58kQ resistors In shutdown the input clamps are dis abled and the inputs are internally connected to GND through 350kQ resistors When shutdown is forced low while BIAS is low the bias network remains active but the bias voltage changes from its nominal 0 59V to 0 475V typ Applications Information Output Considerations DC or AC couple the MAX11508 MAX11509 outputs These devices with 6dB gain are typically connected to a 750 series backmatch resistor followed by a video cable Choose an AC coupling capacitor value that ensures that the lowest frequency content in the video signal is passed and the f
7. 1 Frequency Select Input MSB for bandwidth selection 7 60SLLXVMW 80SLLXVIW MAX11508 MAX11509 Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Detailed Description The MAX11508 MAX11509 integrated filters offer 3 channels of SD PS or HD video and include a bypass mode useful for high bandwidth 1080p and RGB video signals The MAX11508 6th order lowpass filters provide 3dB bandwidths of 9MHz SD 16MHz PS 33MHz HD and 60MHz BP The MAX11509 6th order low pass filters provide 3dB bandwidths of 10MHz SD 17MHz PS 3AMHz HD and 60MHz BP Two control inputs FSELO and FSEL1 select the filter mode for all filters Table 1 Input bias circuitry on 2 fil ter channels can be enabled through the BIAS input to offer simple connection to bipolar video signals such as C Pb and Pr Shutdown mode reduces device current to 1uA typ and is enabled by forcing SHDN low Figure 1 shows a simplified block diagram of the MAX11508 MAX1 1509 The MAX11508 provides a flat passband response and the MAX11509 provides a 0 8dB high frequency boost at 5MHz SD 8 5MHz PS and 20MHz HD to help with system rolloff No frequency boost is included in bypass mode Typical voltage waveforms are shown in Figures 2 and 3 Inputs Transparent Clamps All inputs feature transparent clamps to allow either AC or DC coupling of the inputs The clamp remains inac tive while the input signal
8. 19 4346 Rev 0 10 08 LUATION KIT EVA MA AALMANVI Low Cost 3 Channel HD PS SD BP General Description The MAX11508 MAX11509 integrated 3 channel video filters for high definition HD progressive scan PS standard definition SD and bypass BP video include an output buffer with 6dB gain and are ideal for digital video disc DVD players set top box STB receivers high definition television HDTV digital video recorders DVRs and similar devices The MAX11508 MAX11509 video inputs feature a trans parent clamp compatible with AC and DC coupled input signals and allow DAC outputs to be directly cou pled eliminating the need for bulky coupling capaci tors The filter bandwidths are selectable to HD PS and SD A BP mode is provided for 1080p and high bandwidth RGB signals Selectable input bias circuitry on 2 filter channels offers simple connection to bipolar video signals such as C Pb and Pr The MAX11508 filters provide 3dB bandwidths of 9MHz SD 16MHz PS 33MHz HD and 60MHz BP The MAX11509 filters provide 3dB bandwidths of 10MHz SD 17MHz PS 34MHz HD and 60MHz BP Each channel includes an output buffer with 6dB gain that provides a full 2Vp p video signal into a 1500 video load The buffers drive either AC or DC coupled loads and assure a blanking level of below 1V after the back match resistor The shutdown mode provided reduces device current to 1UA typ The MAX11508
9. ESPONSE HD FREQUENCY RESPONSE 10 s 7 z 10 z 5 E 10 10 J uj 20 u 20 95 30 5 30 40 40 1 50 50 60 3 60 01 10 100 04 1 0 100 01 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz 4 Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Typical Operating Characteristics continued Vcc 5V RL 1500 to GND output DC coupled TA 25 unless otherwise noted
10. V RL 1500 to GND output DC coupled TA 25 C unless otherwise noted DELAY ns DELAY ns DIFFERENTIAL GAIN 96 80 MAX11508 PS GROUP DELAY vs FREQUENCY MAX11508 toc19 60 40 FREQUENCY MHz MAX11509 HD GROUP DELAY vs FREQUENCY 100 MAX11508 toc22 20 20 FREQUENCY MHz MAX11508 SD DIFFERENTIAL GAIN NTSC 100 MAX11508 toc25 DELAY ns DELAY ns DIFFERENTIAL PHASE deg MAX11509 PS GROUP DELAY vs FREQUENCY MAX11508 toc20 0 1 1 0 FREQUENCY MHz MAX11508 BP GROUP DELAY vs FREQUENCY 100 MAX11508 toc23 0 1 a 1 FREQUE CY MHz MAX11508 SD DIFFERENTIAL PHASE NTSC 100 MAX11508 toc26 s DELAY ns DELAY ns DIFFERENTIAL GAIN 40 20 MAX11508 HD GROUP DELAY vs FREQUENCY MAX11508 toc21 40 20 1 0 FREQUENCY MHz MAX11509 BP GROUP DELAY vs FREQUENCY MAX11508 toc24 20 40 0 1
11. e f 100kHz to 30MHz Group Delay f 20MHz BYPASS VIDEO Note 2 3dB Bandwidth Low Frequency Gain Total Harmonic Distortion VOUT 1 4Vp p f 22MHz Signal to Noise Ratio 2Vp p signal to RMS noise Signal to Noise Ratio f 100kHz to 30MHz Note 1 All devices are 100 production tested at TA 25 C Note 2 Output AC coupled with 220uF into 150Q to GND 3 60SLLXVMW 80S LLXVIMW Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Vcc 5V RL 1500 to GND output DC coupled TA 25 C unless otherwise noted Typical Operating Characteristics MAX11508 MAX11509 MAX11508 MAX11508 MAX11509 SD FREQUENCY RESPONSE SD PASSBAND RESPONSE SD FREQUENCY RESPONSE 10 E 7 3 10 z 5 E 10 1 g B 20 B 3 20 30 8 1 5 30 40 4 1 50 50 60 3 60 01 10 100 04 1 10 01 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz MAX11509 MAX11508 MAX11508 SD PASSBAND RESPONSE PS FREQUENCY RESPONSE PS PASSBAND RESPONSE 7 z 10 7 g 5 E 8 5 E 10 S z gm z co BY 05 30 5 1 40 1 1 50 3 60 3 0 1 1 10 04 1 0 100 01 1 0 100 FREQUENCY MHz FREQUENCY MHz FREQUENCY MHz MAX11509 MAX11509 MAX11508 PS FREQUENCY RESPONSE PS PASSBAND R
12. fixed DC voltage typically 0 59V to ensure that the transparent clamp remains off TRANSPARENT CLAMP 9MHz 16MHz 33MHz 60MHz 10 2 17 2 2 60 2 MAXIM MAX11508 MAX11509 TRANSPARENT CLAMP R 9MHz 16MHz 33MHz 60MHz 10MHz 17MHz S4MHz 60MH2 BIAS NETWORK s TRANSPARENT CLAMP 9MHz 16MHz 33MHz 60MHz 10 2 17 2 2 60 2 Figure 1 Block Diagram FSEL1 FSELO 0 0 MAX11508 FILTER 3dB FREQUENCY MHz OPERATING MODE MAX11509 9 10 Standard definition 16 Progressive scan 33 34 High definition so Bypass Bypass AVLAZCLA Low Cost 3 Channel HD PS SD BP Video Filters with Buffer MAXIM OUTPUT SIGNAL MAX11508 MAX11509 INPUT OUTPUT INPUT SIGNAL 0 0V SD SYNC SIGNAL NOT SHOWN FOR CLARITY Figure 2 Typical AC Coupled Signal MAXIM OUTPUT SIGNAL MAX11508 MAX11509 INPUT OUTPUT INPUT SIGNAL SD SYNC SIGNAL NOT SHOWN FOR CLARITY Figure 3 Typical DC Coupled Signal AVLAZCLA 9 60SLLXVMW 80SLLXVIW MAX11508 MAX11509 Low Cost 3 Channel HD PS SD BP Video Filters with Buffer MAXIM ENCODER MAX11508 MAX11509 Figure 4 Simple AC Coupling and BIAS Control for Unipolar Signals CVBS Y R G B MAXIM ENCODER MAX11508 MAX11509 Figure 5 AC Coupling and BIAS Control for B
13. ield time distortion is kept within desired limits when using an AC connection The selection of this value is a function of the input imped ance and more importantly the input leakage of the circuit being driven Common industry practice is to use a 220yF or larger capacitor The MAX11508 MAX11509 outputs are fully protected against short circuits to ground The short circuit pro tection circuitry limits the output current to 75mA typ per output Shorting more than one output to ground simultaneously may exceed the maximum package power dissipation PCB Layout Recommendations Connect the power and ground traces to large copper areas to enhance power dissipation Bypass Vcc to GND with O 1uF and 1 0uF capacitors Place the 1 capacitor closest to Vcc Use surface mount capaci tors for their low inductance Place traces carrying video signals appropriately to avoid mutual coupling When inputs are AC coupled place the capacitors as close as possible to the device and keep traces short to minimize parasitic capacitance and inductance Refer to the MAX11508 MAX11509 evaluation kit data sheet for PCB layout Chip Information PROCESS BiCMOS 60SLLXVW 80S LLXVIMW MAX11508 MAX11509 Low Cost 3 Channel HD PS SD BP Video Filters with Buffer Typical Operating Circuit AC COUPLING CAPACITORS ARE OPTIONAL 75Q VIDEO Y G OUT MAXIM MAX11508 MAX11509 Pb B_IN Pb B_OUT BIAS SHDN Pr R_IN Pr R_OUT
14. ipolar Signals C Pb Pr 10 MAXIM Low Cost 3 Channel HD PS SD BP Filters The MAX11508 filter characteristic provides excellent time domain response with low overshoot and guaran tees minimal attenuation in the passband The MAX11509 filters offer a small gain peaking response to counter system rolloff Select filter frequency with inputs FSELO and FSEL1 as shown in Table 1 Standard Definition SD Filters The MAX11508 SD filters have a 9MHz typ 3aB fre quency while the MAX11509 SD filters offer a 10MHz typ 3dB frequency and a 0 8dB high frequency boost at 5MHz typ Both devices have a stopband attenuation of 48 typ at 27MHz Progressive Scan PS Filters The MAX11508 PS filters have a 16MHz typ fre quency while the MAX11509 PS filters offer a 17MHz typ 3dB frequency and a 0 8dB high frequency boost at 8 5MHz typ Both devices have a stopband attenuation of A4dB typ at 54MHz High Definition HD Filters The MAX11508 HD filters have a 33MHz typ 3dB fre quency while the MAX11509 HD filters offer a 34MHz typ 3dB frequency and a 0 8dB high frequency boost at 20MHz typ Both devices have a stopband attenuation of 45dB typ at 74 25MHz Bypassing the Filters The MAX11508 MAX11509 filter bypass circuitry offers a 60MHz typ 3dB frequency Bypassed filters offer no gain peaking Output Buffer The MAX11508 MAX11509 feature output buffers with 6dB gain that drive
15. is above ground offering true DC input coupling When the signal goes below ground as is the case when it is AC coupled the clamp sets the sync tip close to the ground level Input Coupling The choice of AC or DC coupling the input depends on the video source Many DACs have a current output and are terminated to ground with a resistor such sig nals are conveniently DC coupled Use AC coupling when the DC level of the video signal is unknown or outside the specified input range of the MAX11508 MAX11509 such as SCART or Vcc terminated DAC outputs A bias network within 2 channels of the MAX11508 MAX11509 for use with bipolar signals Table 1 Frequency Selection Truth Table CONTROL INPUTS connects to the input node when BIAS is forced low Figures 4 and 5 show how the bias network operates DC Coupled Inputs When the input is DC coupled the voltage must remain above zero but not to exceed 1 4V typ AC Coupling and BIAS When the input is AC coupled the transparent clamps are active and set the lowest point of the signal at ground This is appropriate for unipolar signals such as CVBS Y G or B with sync pulses Figure 4 Force BIAS high when coupling unipolar signals For bipolar signals such as Pb and Pr a bias network is provided within the MAX11508 MAX11509 for inputs Pb B IN and Pr R IN Force BIAS low to connect the bias network to these inputs Figure 5 The internal network biases AC coupled inputs to a
16. offers a flat passband and the MAX11509 features 0 8dB peaking to compensate for DAC rolloff The MAX11508 MAX11509 operate from a 5V power supply and operate over the upper commer cial O C to 85 C temperature range The parts are offered in the 14 pin TSSOP package Applications Cable and Satellite STB Receivers HDTV DVD Players Personal Video Recorders DVRs Video On Demand HD Recorders Typical Operating Circuit appears at end of data sheet MAKIM Video Filters with Buffer Features Three Selectable 6th Order 9MHz 16MHz 33MHz SD PS HD Filters Bypass Mode for High Bandwidth Signals Transparent Input Clamp Output Buffers Drive a Standard 1500 Video Load 12kV HBM ESD Protection on Outputs AC or DC Coupled Inputs AC or DC Coupled Outputs 0 8dB Peaking Passband Response MAX11509 in SD PS and HD Modes Single 5V Power Supply Lead Free 14 Pin TSSOP Package 9 9 9 9 9 9 99 Ordering Information PART TEMP RANGE MAX11508UUD 0 to 85 C 14 TSSOP MAX11509UUD O C to 85 C 14 TSSOP Denotes a lead free HoHS compliant package PIN PACKAGE Pin Configuration TOP VIEW MAXIM MAX11508 MAX11509 Pb B_IN Pr R_IN BIAS N C Pb B OUT Maxim Integrated Products 1 For pricing delivery and ordering information please contact Maxim Direct at 1 888 629 4642 or visit Maxim s website at www maxim ic com 60SLLXVMW 80S MAX11508 MAX11509
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MAXIM MAX11508/MAX11509 handbook