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TEXAS INSTRUMENTS DRV603 DirectPath 3-VRMS Line Driver With Adjustable Gainhandbook

1. R2 AAA AAA R1 R3 y LEFT C3 L C1 INPUT C2 Y MW AAA I R1 R3 E E 3 E E 2 Sn C4 v y BE og SS co De eo S 5 5 5 E 3 3 2 or v v o Sn EG Z S 5 Y o hw RIGHT C3 R1 R3 INPUT r C2 bd C3 R1 R3 C1 Senn 1uF V VW OUTPUT R1 5 6 KQ R2 5 6 kQ R3 5 6 kQ C1 220 pF C2 470 pF Differential input single ended output second order filter Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 Regulator System Supply 10 uF Submit Documentation Feedback 13 DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 REVISION HISTORY NOTE Page numbers of current version may differ from previous versions JA TEXAS INSTRUMENTS www ti com Changes from Revision A February 2009 to Revision B Page e Changed Crosstalk spec from 80dB to 100dB is 3 Added missing voltage value 1 25V to External Undervoltage Detection threshold equation sessssssse 12 14 Submit Documentation Feedback Product Folder Link s DRV603 Copyright 2009 Texas Instruments Incorporated DRV603 JA TEXAS INSTRUMENTS www ti com SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 Changes from Revision B October 2009 to Revision C Page e Changed maximum operating junction temperature
2. vs vs FREQUENCY FREQUENCY Vpp 3 3 V Ry 2 5 KO Vo 2 Vrms Vpp 5 V Ry 100 KO Vo 2 Vims 10 10 x o 2 2 2 1 5 1 E E E 9 z e 9 g 041 o a a o o g 2 o o 001 001 a e D g gt 0 001 z 0 001 t D a x E 0 0001 0 0001 20 50 100 200 500 1k 2k 5k 10k 20k 20 50 100 200 500 1k 2k 5k 10k 20k f Frequency Hz f Frequency Hz Figure 5 Figure 6 PHASE GAIN vs vs FREQUENCY FREQUENCY Vpp 5 V Ry 100 KO Vo 2 Vims Vpp 5 V Ry 100 KO Vo 2 Vims 410 150 9 100 8 7 50 o m o 0 i S s Ce 50 iini 3 100 2 150 1 0 20 SRE 500 Tk ZEE TU 50k 200k 20 50100 500 1k 2k 5k 10k 50k 200k f Frequency Hz Figure 7 Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 f Frequency Hz Figure 8 Submit Documentation Feedback 7 DRV603 I TEXAS INSTRUMENTS SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 www ti com TYPICAL CHARACTERISTICS continued Von 3 3 V 3 TA 25 C RL 2 5 kQ C euwp Css 1 uF 3 Cin 10 UF Rin 10 kQ Rip 20 kO unless otherwise noted FFT vs QUIESCENT CURRENT FREQUENCY vs Voo 5 V Ri 100 KO Vo 3 Vis 60 dB SUPPLY VOLTAGE FFT dBr Quiescent Current A 0 3 4 5 0 5k 10k 15k 20k Mos M Voltage V f Frequency Hz Figure 9 Figu
3. ball l Example Non Soldermask Defined Pad Example Pad Geometry See Note C Example Solder Mask Opening See Note E a d AIL Are j 7 Se s Ke 2 rca a 211284 2 5 1 NOTES A All linear dimensions are in millimeters B This drawing is subject to change without notice C Publication IPC 7351 is recommended for alternate designs D Laser cutting apertures with trapezoidal walls and also rounding corners will offer better paste release Customers should contact their board assembly site for stencil design recommendations Refer to IPC 7525 for other stencil recommendations E Customers should contact their board fabrication site for solder mask tolerances between and around signal pads 13 TEXAS INSTRUMENTS www ti com IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries Tl reserve the right to make corrections modifications enhancements improvements and other changes to its products and services at any time and to discontinue any product or service without notice Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete All products are sold subject to Tl s terms and conditions of sale supplied at the time of order acknowledgm
4. POWER RATING PACKAGE Reyc C W Roya C W AT T4 lt 25 C AT Ta 70 C TSSOP 14 PW 35 1150 870 mW 348 mW 1 Power rating is determined with a junction temperature of 125 C This is the point where performance starts to degrade and long term reliability starts to be reduced Thermal management of the final PCB should strive to keep the junction temperature at or below 125 C for best performance and reliability 2 These data were taken with the JEDEC high K test printed circuit board PCB For the JEDEC low K test PCB the Resa is 185 C W RECOMMENDED OPERATING CONDITIONS MIN NOM MAX UNIT Von Supply voltage DC supply voltage 3 3 3 5 5 V Vu High level input voltage EN 60 96 of Vpp Vit Low level input voltage EN 40 96 of Vpp TA Operating free air temperature 0 70 C 2 Submit Documentation Feedback Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 JA TEXAS INSTRUMENTS www ti com ELECTRICAL CHARACTERISTICS T4 25 C unless otherwise noted DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Vos Output offset voltage Vpp 3 V to 5 V input grounded unity gain 1 mV PSRR Power supply rejection ratio Vpp 3Vto5V 88 dB Vou High level output voltage Vpp 3 3 V RL 2 5 KQ 3 1 V VoL Low level output voltage Vpp 3 3 V R 2 5 KQ
5. INPUT BLOCKING CAPACITORS DC input blocking capacitors are required to be added in series with the audio signal into the input pins of the DRV603 These capacitors block the dc portion of the audio source and allow the DRV603 inputs to be properly biased to provide maximum performance These capacitors form a high pass filter with the input resistor Ry The cutoff frequency is calculated using Equation 1 For this calculation the capacitance used is the input blocking capacitor and the resistance is the input resistor chosen from Table 1 Then the frequency and or capacitance can be determined when one of the two values is given 4 1 fei h _ IN 2x RNCN Cin 2x fen Dm 1 USING THE DRV603 AS A SECOND ORDER FILTER Several audio DACs used today require an external low pass filter to remove out of band noise This is possible with the DRV603 as it can be used like a standard OPAMP Several filter topologies can be implemented both single ended and differential In Figure 13 a multi feedback MFB with differential input and single ended input is shown An ac coupling capacitor to remove dc content from the source is shown it serves to block any dc content from the source and lowers the dc gain to 1 helping reducing the output dc offset to minimum The component values can be calculated with the help of the TI FilterPro program available on the TI website at http focus ti com docs toolsw folders print filte
6. 2009 I TEXAS INSTRUMENTS www ti com PW PACKAGE TOP VIEW INR 1 IN INR 2 INL OUTR 3 OUTL External SGND 4 ee UVP Detector EN 5 PGND PVSS 6 PVDD CN 7 Charge Pump CP PIN FUNCTIONS PIN yo DESCRIPTION NAME NO INR 1 l Right channel OPAMP positive input INR 2 l Right channel OPAMP negative input OUTR 3 O Right channel OPAMP output SGND 4 P Signal ground EN 5 l Enable input active high PVSS 6 P Supply voltage CN 7 UO Charge pump flying capacitor negative terminal CP 8 UO Charge pump flying capacitor positive terminal PVDD 9 P Positive supply PGND 10 P Power ground UVP 11 l Undervoltage protection input OUTL 12 O Left channel OPAMP output INL 13 l Left channel OPAMP negative input INL 14 I Left channel OPAMP positive input 1 input O output P power 4 Submit Documentation Feedback Product Folder Link s DRV603 Copyright 2009 Texas Instruments Incorporated DRV603 JA TEXAS INSTRUMENTS www ti com SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 FUNCTIONAL BLOCK DIAGRAM Click amp Pop Short Circuit Suppression Protection Bias Circuitry Copyright 2009 Texas Instruments Incorporated Submit Documentation
7. 3 05 V Jul High level input current EN Vpp 5 V Vi Vpp 1 uA IL Low level input current EN Voo 5V V 0V 1 uA Vpp 3 3 V no load EN Vpp 11 Ipp Supply current Vpp 5 V no load EN Vpp 12 5 mA Shutdown mode Vip 3 V to 5 V 1 OPERATING CHARACTERISTICS Vpp 3 3 V Ta 25 C R 2 5 KO Cpump Cevss 1 UF Cin 10 uF Rin 10 KO Re 20 kQ unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT THD 1 Vpp 3 3 V f 1 kHz 2 05 Vo Output voltage outputs in phase THD 1 Vpp 5 V f 1 kHz 3 01 Vims THD 1 Vpp 5 V f 1 kHz Bus 100 kQ 3 1 THD N Total harmonic distortion plus noise Vo 2 Vms f 1 kHz 0 001 Crosstalk Vo 2 Vms f 1 kHz 100 dB lo Maximum output current Vpop 3 3 V 20 mA Rin Input resistor range 1 10 47 kQ Rib Feedback resistor range 4 7 20 100 kO Slew rate 4 5 V us Maximum capacitive load 220 pF VN Noise output voltage BW 20 Hz to 22 kHz A weighted 6 UVims SNR Signal to noise ratio poe li See 112 dB Gew Unity gain bandwidth 8 MHz Avo Open loop voltage gain 150 dB Vuvp External undervoltage detection 1 25 V lis coii undervoltage detection 5 uA ysteresis current fcp Charge pump frequency 225 450 675 kHz Copyright O 2009 Texas Instruments Incorporated Product Folder Link s DRV603 Submit Documentation Feedback 3 DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER
8. A TEXAS lt gt INSTRUMENTS www ti com DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 DirectPath 3 VRMS Line Driver With Adjustable Gain Check for Samples DRV603 FEATURES e DirectPath Eliminates Pop Clicks Eliminates Output DC Blocking Capacitors Provides Flat Frequency Response 20 Hz 20 kHz Low Noise and THD SNR gt 109 dB Typical Vn 7 uVms THD N 0 002 e Output Voltage Into 2 5 kO Load 2 Vrms With 3 3 V Supply Voltage 3 Vrms With 5 V Supply Voltage e Differential Input External Undervoltage Mute APPLICATIONS e PDP LCD TV Blu ray Disc DVD Players Home Theater in a Box e Set Top Boxes ANN MAS RIGHT H d DRV603 MCN LEFT H N ANN DESCRIPTION The DRV603PW is a 3 Vaus pop free stereo line driver designed to allow the removal of the output dc blocking capacitors for reduced component count and cost The device is ideal for single supply electronics where size and cost are critical design parameters Designed using Tls patented DirectPath technology The DRV603 is capable of driving 3 Vims into a 2 5 KQ load with 5 V supply voltage The device has differential inputs and uses external gain setting resistors to support a gain range of 1 V V to 10 V V and line outputs that have 8 kV IEC ESD protection The DRV603 occasionally referred to as the 603 has built in shutdown control
9. Feedback 5 Product Folder Link s DRV603 DRV603 i TEXAS INSTRUMENTS SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 www ti com TYPICAL CHARACTERISTICS Vip x 3 3 V Ta 25 C RL 2 5 kO us Css 1 uF Cin 10 UF Rin 10 kQ Rip 20 kQ unless otherwise noted TOTAL HARMONIC DISTORTION NOISE TOTAL HARMONIC DISTORTION NOISE vs vs OUTPUT VOLTAGE OUTPUT VOLTAGE Vpp 3 3 V RL 100 KO f 1 kHz Vpp 5 V RL 100 KO f 1 kHz 10 10 as as 2 1 2 1 E E 2 9 t g g Ei 0 1 2 0 1 Q Q o o 2 2 E E e 0 01 e 0 01 T I g S e e z 0 001 z 0 001 S S E E 0 0001 0 0001 100m 200m 300m 500m 800m 2 3 45 100m 200m 500m 800m 2 3 45 Vg Output Voltage V Vg Output Voltage V Figure 1 Figure 2 TOTAL HARMONIC DISTORTION NOISE TOTAL HARMONIC DISTORTI
10. is accompanied by all associated warranties conditions limitations and notices Reproduction of this information with alteration is an unfair and deceptive business practice TI is not responsible or liable for such altered documentation Information of third parties may be subject to additional restrictions Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications and acknowledge and agree that they are solely responsible for all legal regulatory and safety related requirements concerning their products and any use of TI products in such safety critical applications notwithstanding any applications related information or support that may be provided by TI Further Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in suc
11. DRV603PWR TSSOP PW 14 2000 330 0 12 4 6 9 5 6 1 6 8 0 12 0 Q1 Pack Materials Page 1 ip TEXAS PACKAGE MATERIALS INFORMATION INSTRUMENTS www ti com 20 Jul 2010 TAPE AND REEL BOX DIMENSIONS All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length mm Width mm Height mm DRV603PWR TSSOP PW 14 2000 346 0 346 0 29 0 Pack Materials Page 2 MECHANICAL DATA PW R PDSO G14 PLASTIC SMALL OUTLINE A E NEEN 4 50 6 6 m 6 20 OQ Gage Plane n v pue GERS 4040064 3 G 02 11 NOTES A All linear dimensions are in millimeters Dimensioning and tolerancing per ASME Y14 5M 1994 B This drawing is subject to change without notice Body length does not include mold flash protrusions or gate burrs Mold flash protrusions or gate burrs shall not exceed 0 15 each side Body width does not include interlead flash Interlead flash shall not exceed 0 25 each side E Falls within JEDEC MO 153 13 TEXAS INSTRUMENTS www ti com LAND PATTERN DATA T PLASTIC SMALL OUTLINE PDSO G14 Stencil Openings Example Board Layout Note D Note C
12. Green RoHS amp no Sb Br please check http Awww ti com productcontent for the latest availability information and additional product content details TBD The Pb Free Green conversion plan has not been defined Pb Free RoHS Tl s terms Lead Free or Pb Free mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances including the requirement that lead not exceed 0 1 by weight in homogeneous materials Where designed to be soldered at high temperatures TI Pb Free products are suitable for use in specified lead free processes Pb Free RoHS Exempt This component has a RoHS exemption for either 1 lead based flip chip solder bumps used between the die and package or 2 lead based die adhesive used between the die and leadframe The component is otherwise considered Pb Free RoHS compatible as defined above Green RoHS amp no Sb Br TI defines Green to mean Pb Free RoHS compatible and free of Bromine Br and Antimony Sb based flame retardants Br or Sb do not exceed 0 196 by weight in homogeneous material 3 MSL Peak Temp The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications and peak solder temperature Important Information and Disclaimer The information provided on this page represents TI s knowledge and belief as of the date that it is provided TI bases its knowledge and belief on information provided by third parties and makes no r
13. LOS617C JANUARY 2009 REVISED NOVEMBER 2009 www ti com A These devices have limited built in ESD protection The leads should be shorted together or the device placed in conductive foam hid during storage or handling to prevent electrostatic damage to the MOS gates ORDERING INFORMATION Ta PACKAGE TRANSPORT MEDIA QUANTITY 40 C to 85 C DRV603PW RAIL 90 o o Oo DRV603PWR Tape and reel 2000 1 For the most current package and ordering information see the Package Option Addendum at the end of this document or see the TI Web site at www ti com ABSOLUTE MAXIMUM RATINGS over operating free air temperature range VALUE UNIT Supply voltage Vpp to GND 0 3 to 5 5 V Vi Input voltage Vss 0 3 to Vpp 0 3 V RL Minimum load impedance gt 600 Q EN to GND 0 3 to Vpp 0 3 V Ty Maximum operating junction temperature range 40 to 150 C Tstg Storage temperature range 40 to 150 C ESD Electrostatic discharge IEC ESD OUTL OUTR 8 kV 1 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 under recommended operating conditions is not implied Exposure to absolute maximum rated conditions for extended periods may affect device reliability DISSIPATION RATINGS 5 S POWER RATING
14. ON NOISE vs vs OUTPUT VOLTAGE OUTPUT VOLTAGE Vpp 3 3 V R 2 5 KQO f 1 kHz Vpp 5 V R 600 Q f 1 kHz 10 10 as as 2 1 9 1 E E S 9 t t g g Ei 0 1 m 0 1 a a o o 2 2 E E e 0 01 e 0 01 T T g d e z 0 001 z 0 001 S S F 0 0001 0 0001 100m 200m 500m 800m 2 3 45 100m 200m 500m 800m 2 3 45 Vo Output Voltage V Vg Output Voltage V Figure 3 Figure 4 6 Submit Documentation Feedback Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 JA TEXAS INSTRUMENTS www ti com DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 TYPICAL CHARACTERISTICS continued Von 3 3 V 3 TA 25 C RL 2 5 KO C euwp Css 1 uF 3 Cin 10 UF Rin 10 KO Rip 20 kO unless otherwise noted TOTAL HARMONIC DISTORTION NOISE TOTAL HARMONIC DISTORTION NOISE
15. audio power amplifier would also help but it is not required in most applications because of the high PSRR of this device GAIN SETTING RESISTOR RANGES The gain setting resistors Rin and R must be chosen so that noise stability and input capacitor size of the DRV603 are kept within acceptable limits Voltage gain is defined as Rip divided by Ryy Selecting values that are too low demands a large input ac coupling capacitor Cin Selecting values that are too high increases the noise of the amplifier Table 1 lists the recommended resistor values for different gain settings Table 1 Recommended Resistor Values INPUT RESISTOR FEEDBACK RESISTOR DIFFERENTIAL INPUT NONINVERTING INPUT VALUE Rin VALUE Rip GAIN INVERTING INPUT GAIN GAIN 22 KQ 22 kQ 1 V V 1 V V 2 V V 15 kQ 30 kQ 1 5 V V 1 5 V V 2 5 V V 33 kQ 68 KQ 2 1 V V 2 1 VN 3 1 VN 10 kQ 100 kQ 10 VN 10 V V 11 VW CiN Rin Cin Rin IN AAA e NAN IN 9 _ VW Rep Rep Differential Input Inverting IN AAA 9 NAN L 25 Cin Rin Rep Cx Rin Me RFB Non Inverting IN A AA 1 SR Cin Rx Figure 12 Differential Inverting and Non Inverting Gain Configurations 10 Submit Documentation Feedback Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 DRV603 JA TEXAS INSTRUMENTS www ti com SLOS617C JANUARY 2009 REVISED NOVEMBER 2009
16. ent TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with Tl s standard warranty Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty Except where mandated by government requirements testing of all parameters of each product is not necessarily performed TI assumes no liability for applications assistance or customer product design Customers are responsible for their products and applications using Tl components To minimize the risks associated with customer products and applications customers should provide adequate design and operating safeguards TI does not warrant or represent that any license either express or implied is granted under any TI patent right copyright mask work right or other TI intellectual property right relating to any combination machine or process in which TI products or services are used Information published by TI regarding third party products or services does not constitute a license from TI to use such products or services or a warranty or endorsement thereof Use of such information may require a license from a third party under the patents or other intellectual property of the third party or a license from TI under the patents or other intellectual property of TI Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and
17. epresentation or warranty as to the accuracy of such information Efforts are underway to better integrate information from third parties TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals TI and TI suppliers consider certain information to be proprietary and thus CAS numbers and other limited information may not be available for release In no event shall TI s liability arising out of such information exceed the total purchase price of the TI part s at issue in this document sold by TI to Customer on an annual basis Addendum Page 1 ip TEXAS PACKAGE MATERIALS INFORMATION INSTRUMENTS www ti com 20 Jul 2010 TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS Reel Diameter Dimension designed to accommodate the component width Dimension designed to accommodate the component length Dimension designed to accommodate the component thickness v Overall width of the carrier tape Y Pitch between successive cavity centers t Reel Width W1 QUADRANT ASSIGNMENTS FOR PIN 1 ORIENTATION IN TAPE Sprocket Holes User Direction of Feed Al dimensions are nominal Device Package Package Pins SPQ Reel Reel AO BO KO P1 W Pin1 Type Drawing Diameter Width mm mm mm mm mm Quadrant mm W1 mm
18. esis for the specific cy Srn application The thresholds can be determined as gii follows L o V Vuyp 1 25 V x R11 R12 R12 Hysteresis 5 pA x R13 x R11 R12 R12 with the condition R13 gt gt R11 R12 For example to obtain Vyyp 5 V and 1 V hysteresis R11 3 kQ R12 1 kQ and R13 50 kO CAPACITIVE LOAD The DRV603 has the ability to drive a high capacitive load up to 220 pF directly Higher capacitive loads can be accepted by adding a series resistor of 47 O or larger LAYOUT RECOMMENDATIONS A proposed layout for the DRV603 can be seen in the DRV603EVM User s Guide SLOU248 and the Gerber files can be downloaded from _hitp focus ti com docs toolsw folders print drv603evm html To access this information open the DRV603 product folder and look in the Tools and Software folder GAIN SETTING RESISTORS The gain setting resistors Rij and Ry must be placed close to the input pins to minimize capacitive loading on these input pins and to ensure maximum stability of the DRV603 For the recommended PCB layout see the DRV603EVM user s guide SLOU248 12 Submit Documentation Feedback Copyright 2009 Texas Instruments Incorporated Product Folder Link s DRV603 JA TEXAS INSTRUMENTS DRV603 SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 www ti com APPLICATION CIRCUIT 5V Supply Linear Low Drop
19. for pop free on off control The DRV603 has an external and internal undervoltage detector that mutes the output Using the DRV603 in audio products can reduce component count considerably compared to traditional methods of generating a 3 V output The DRV603 does not require a power supply greater than 5 V to generate its 8 5 V output nor does it require a split rail power supply The DRV603 integrates its own charge pump to generate a negative supply rail that provides a clean pop free ground biased 3 V ms output The DRV603 is available in a 14 pin TSSOP If the low noise and trimmed dc offset and external undervoltage mute function are not beneficial in the application Tl recommends the footprint compatible DRV602 Please be aware that an important notice concerning availability standard warranty and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet DirectPath is a trademark of Texas Instruments Blu ray Disc is a trademark of Blu ray Disc Association All other trademarks are the property of their respective owners PRODUCTION DATA information is current as of publication date Products conform to specifications per the terms of the Texas Instruments standard warranty Production processing does not necessarily include testing of all parameters Copyright 2009 Texas Instruments Incorporated DRV603 JA TEXAS INSTRUMENTS S
20. h safety critical applications TI products are neither designed nor intended for use in military aerospace applications or environments unless the TI products are specifically designated by TI as military grade or enhanced plastic Only products designated by TI as military grade meet military specifications Buyers acknowledge and agree that any such use of TI products which TI has not designated as military grade is solely at the Buyer s risk and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are designated by TI as compliant with ISO TS 16949 requirements Buyers acknowledge and agree that if they use any non designated products in automotive applications TI will not be responsible for any failure to meet such requirements Following are URLs where you can obtain information on other Texas Instruments products and application solutions Products Audio Amplifiers Data Converters DLP Products DSP Clocks and Timers Interface Logic Power Mgmt Microcontrollers RFID RF IF and ZigBee Solutions www ti com audio amplifier ti com dataconverter ti com www dlp com www ti com clocks interface ti com logic ti com power ti com microcontroller ti com www ti rfid com www ti com lprf Applications Communications and Te
21. isa 2 e In Dissipation Ratings section changed 8 to Rey in three places and 185 C to 185 C W sss 2 Corrected reference to Figure TT Rene nine etienne tint td gnam t ED uu ene ae de ERROR SEE E READ e p de unde 9 Added cross reference to Figure 13 scimiani aieia apaa Ea aa ria ia EE E ETE Ea 11 Copyright 2009 Texas Instruments Incorporated Submit Documentation Feedback 15 Product Folder Link s DRV603 ip TEXAS PACKAGE OPTION ADDENDUM INSTRUMENTS www ti com 18 Nov 2009 PACKAGING INFORMATION Orderable Device Status Package Package Pins Package Eco Plan Lead Ball Finish MSL Peak Temp DI Type Drawing Qty DRV603PW ACTIVE TSSOP PW 14 90 Green RoHS amp CU NIPDAU Level 1 260C UNLIM no Sb Br DRV603PWR ACTIVE TSSOP PW 14 2000 Green RoHS amp CU NIPDAU Level 1 260C UNLIM no Sb Br The marketing status values are defined as follows ACTIVE Product device recommended for new designs LIFEBUY TI has announced that the device will be discontinued and a lifetime buy period is in effect NRND Not recommended for new designs Device is in production to support existing customers but TI does not recommend using this part in a new design PREVIEW Device has been announced but is not in production Samples may or may not be available OBSOLETE TI has discontinued the production of the device 2 Eco Plan The planned eco friendly classification Pb Free ROHS Pb Free RoHS Exempt or
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23. re 10 Submit Documentation Feedback Copyright O 2009 Texas Instruments Incorporated Product Folder Link s DRV603 DRV603 JA TEXAS INSTRUMENTS www ti com SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 APPLICATION INFORMATION LINE DRIVER AMPLIFIERS Single supply line driver amplifiers typically require dc blocking capacitors The top drawing in Figure 11 illustrates the conventional line driver amplifier connection to the load and output signal DC blocking capacitors are often large in value and a mute circuit is needed during power up to minimize click and pop The output capacitor and mute circuit consume PCB area and increase cost of assembly and can reduce the fidelity of the audio output signal 9 12 V Conventional Solution Mute Circuit Co Output AM GND Enable 5V 3 9 DRV603 Solution DirectPath Gg Mute Circuit WV Output GND Enable Figure 11 Conventional and DirectPath Line Driver The DirectPath amplifier architecture operates from a single supply but makes use of an internal charge pump to provide a negative voltage rail Combining the user provided positive rail and the negative rail generated by the IC the device operates in what is effectively a split supply mode The output voltages are now centered at zero volts with the capability to swing to the positive rail or negative rail Combining this with the built in click and pop reduction circui
24. rpro html Differential Input Inverting Input R2 R2 MM MW C3 R1 R3 C1 C3 R1 R3 C1 AN an c2 DRV603 c2 DRV60 IN Lee o C3 R1 R3 C1 a KC Figure 13 Second Order Active Low Pass Filter The resistor values should have a low value for obtaining low noise but should also have a high enough value to get a small size ac coupling capacitor Using 5 6 kQ for the resistors C1 220 pF and C2 470 pF a DNR of 112 dB can be achieved with a 10 UF input ac coupling capacitor Copyright 2009 Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link s DRV603 DRV603 JA TEXAS INSTRUMENTS SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 www ti com POP FREE POWER UP Pop free power up is ensured by keeping the SD shutdown pin low during power supply ramp up and ramp down The SD pin should be kept low until the input ac coupling capacitors are fully charged before asserting the SD pin high to achieve pop less power up Figure 14 illustrates the preferred sequence Supply Supply Ramp Time for ac coupling capacitors to charge Figure 14 Power Up Sequence EXTERNAL UNDERVOLTAGE DETECTION VSUP_MO External undervoltage detection can be used to mute shut down the DRV603 before an input device San can generate a pop R13 The shutdown threshold at the UVP pin is 1 25 V AN The user selects a resistor divider to obtain the shutdown threshold and hyster
25. t the DirectPath amplifier requires no output dc blocking capacitors The bottom block diagram and waveform of Figure 11 illustrate the ground referenced line driver architecture This is the architecture of the DRV603 Copyright 2009 Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link s DRV603 DRV603 JA TEXAS INSTRUMENTS SLOS617C JANUARY 2009 REVISED NOVEMBER 2009 CHARGE PUMP FLYING CAPACITOR AND PVSS CAPACITOR The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage The PVSS capacitor must be at least equal to the charge pump capacitor in order to allow maximum charge transfer Low ESR capacitors are an ideal selection and a value of 1 pF is typical Capacitor values that are smaller than 1 uF can be used but the maximum output voltage may be reduced and the device may not operate to specifications www ti com DECOUPLING CAPACITORS The DRV603 is a DirectPath line driver amplifier that requires adequate power supply decoupling to ensure that the noise and total harmonic distortion THD are low A good low equivalent series resistance ESR ceramic capacitor typically 1 UF placed as close as possible to the device Vpp lead works best Placing this decoupling capacitor close to the DRV603 is important for the performance of the amplifier For filtering lower frequency noise signals a 10 uF or greater capacitor placed near the

TEXAS INSTRUMENTS DRV603 DirectPath 3-VRMS Line Driver With Adjustable Gainhandbook

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