TPA6047A4RHBR

TPA6047A4_16 TI1 | Alldatasheet

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FEATURES

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APPLICATIONS

SPKR_LIN– BYPASS SGND HP_EN SPKR_EN SPKR_RIN– SPKR_LIN+ HP_INR HP_INL HPVDD CPVDD VDD REG_EN REG_OUT SPKR_RIN+ ROUT+ LOUT+ ROUT– LOUT– SPVDD CPVSS C1P HPVSS SPGND CPGND C1N GAIN0 GAIN1 OUTL OUTR HPR HPL SPKL TPA6047A4 Shutdown Control 3□V – 5.5□V 4.5□V – 5.5□V Regulator□Enable 4.75□V□(To□CODEC) 4.5□V – 5.5□V Gain Control TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR Microsoft Windows Vista Compliant Fully Differential Architecture and High PSRR The TPA6047A4 is a stereo audio power amplifier and DirectPath headphone amplifier in a thermally Provide Excellent RF Rectification Immunity enhanced, space-saving, 32-pin QFN package. The 2.1-W, THD+N Into Ω Speakers and speaker amplifier is capable of driving 2.1 W per 100-mW, 10% THD+N Into 16- Ω Headphones channel continuously into Ω loads at The From 5-V Supply headphone amplifier achieves a minimum of 100 mW DirectPath Headphone Amplifier Eliminates at 10% THD+N from a 5-V supply. A built-in internal Output Capacitors (1) 4-step gain control for the speaker amplifier and a fixed 1.5 V/V gain for the headphone amplifier Internal 4-Step Speaker Gain Control: 10, 12, minimizes external components needed. 15.6, 21.6 dB and Fixed 1.5-V/V Headphone Independent shutdown control and dedicated inputs 4.75-V Low Dropout Regulator for CODEC for the speaker and headphone allow the TPA6047A4 Independent Shutdown Controls for Speaker, to simultaneously drive both headphones and internal Headphone Amplifier, and Low Dropout speakers. Differential inputs to the speaker amplifiers Regulator (LDO) offer superior power-supply and common-mode noise Output Short-Circuit and Thermal Protection rejection. Notebook Computers Portable DVD TPA6040A4 TPA6041A4 TPA6047A4 Speaker Active Low Active Low Active High Enable LDO (V) 4.75 3.3 4.75 10, 15.6, 10, 12, 15.6, 10, 12, 15.6, Gain (dB) 21.6 21.6 21.6 (1) US Patent Number 5289137 Please be aware that an important notice concerning availability, standard warranty, and use in critical sheet. DirectPath, PowerPAD are trademarks of Texas Instruments. Microsoft, Windows Vista are trademarks of Microsoft Corporation. PRODUCTION DATA information is current as of publication date. Copyright 2008, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

Bias Control LDOHP_EN BYP ASS REG_EN SPKR_RIN+ SPKR_RIN– Gain Control SPKR_LIN+ SPKR_LIN– Charge Pump CPVDD CPVSS CPGND C1P C1N VDD ROUT+ ROUT– SPVDD SPGND LOUT+ LOUT– SPVDD SPGND HP_INL HP_INR HP_OUTL HP_OUTR HPVDD 1 /c109F 1 /c109F

1 F/c109

SPKR_EN

0.47 F/c109

3 V 5.5 V– SPVDD4.5 V – 5.5 V HPVSS (4.75-V Output) REG_OUT TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. Functional Block Diagram Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

BYP ASSSPKR_RIN– Thermal Pad CPVDD GAIN1 1 1 241 232 223 214 205 196 187 178 SPKR_EN GAIN0 HP_EN VDD SPGND REG_OUT ROUT+ SGND ROUT– HP_INL SPVDD HP_INR HPVDD REG_EN TP A6047A4RHB (TOP VIEW) SPKR_RIN+ C1P SPKR_LIN+ CPGND SPKR_LIN– C1N SPGND CPVSS LOUT+ HPVSS LOUT– HP_OUTR SPVDD HP_OUTL TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 AVAILABLE PACKAGE OPTIONS T A PACKAGED DEVICE (1) (2) 32-Pin QFN (RHB) C to C TPA6047A4RHB (1) The RHB package is available taped and reeled. To order a taped and reeled part, add the suffix R to the part number (e.g., TPA6047A4RHBR). (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com TERMINAL FUNCTIONS TERMINAL I/O/P NO. SPKR_RIN I Right-channel negative differential audio input for speaker amplifier SPKR_RIN+ I Right-channel positive differential audio input for speaker amplifier SPKR_LIN+ I Left-channel positive differential audio input for speaker amplifier SPKR_LIN I Left-channel negative differential audio input for speaker amplifier SPGND P Speaker power ground LOUT+ O Left-channel positive audio output LOUT O Left-channel negative audio output SPVDD P Supply voltage terminal for speaker amplifier CPVDD P Charge pump positive supply, connect to HPVDD via star connection C1P I/O Charge pump flying capacitor positive terminal CPGND P Charge pump ground C1N I/O Charge pump flying capacitor negative terminal CPVSS P Charge pump output (negative supply for headphone amplifier), connect to HPVSS HPVSS P Headphone amplifier negative supply, connect to CPVSS HP_OUTR O Right-channel capacitor-free headphone output HP_OUTL O Left-channel capacitor-free headphone output HPVDD P Headphone amplifier supply voltage, connect to CPVDD ROUT O Right-channel negative audio output Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

www.ti.com TERMINAL FUNCTIONS (continued) TERMINAL I/O/P NO. ROUT+ O Right-channel positive audio output HP_EN I Headphone channel enable logic input; active high enable. HIGH=ENABLE. SPKR_EN I Speaker channel enable logic input; active high enable. HIGH=ENABLE. BYPASS P Common-mode bias voltage for speaker preamplifiers REG_EN I Enable pin (Active HIGH) for turning on/off LDO. HIGH=ENABLE HP_INR I Headphone right-channel audio input HP_INL I Headphone left-channel audio input SGND P Signal ground, connect to CPGND and SPGND REG_OUT O Regulated 4.75-V output VDD P Positive power supply GAIN0 I Bit MSB, of gain select bits GAIN1 I Bit LSB, of gain select bits Solder the thermal pad on the bottom of the QFN package to the GND plane of the PCB. It is required for Thermal Pad Die Pad P mechanical stability and will enhance thermal performance. over operating free-air temperature range (unless otherwise noted) (1) VALUE UNIT Supply voltage HPVDD, VDD, SPVDD, CPVDD 0.3 to V SPKR_LIN+, SPKR_LIN-, SPKR_RIN+, SPKR_RIN-, 0.3 to 6.3 HP_EN,GAIN0, GAIN1, SPK_EN, REG_EN V I Input voltage V HP_INL, HP_INR HP Enabled 3.5 to 3.5 HP_INL, HP_INR HP not Enabled 0.3 to 3.5 Continuous total power dissipation See Dissipation Rating Table T A Operating free-air temperature range to C T J Operating junction temperature range to 150 C T stg Storage temperature range to 150 C Electrostatic discharge HBM for HP_OUTL and HP_OUTR kV CDM 500 V Electrostatic discharge, all other pins HBM kV (1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operations 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. PACKAGE (1) T A C DERATING FACTOR T A C T A C RHB 5.06 W mW/ C 4.04 W 3.23 W (1) The PowerPAD must be soldered to a thermal land on the printed-circuit board. Refer to the Texas Instruments document, PowerPAD Thermally Enhanced Package application report (literature number SLMA002) for more information regarding the PowerPAD package. MIN MAX UNIT Supply voltage VDD, SPVDD 4.5 5.5 V Supply voltage HPVDD, CPVDD 5.5 V V IH High-level input voltage SPKR_EN, HP_EN, GAIN0, GAIN1, REG_EN V Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

www.ti.com SLOS601 OCTOBER 2008 RECOMMENDED OPERATING CONDITIONS (continued) MIN MAX UNIT V IL Low-level input voltage SPKR_EN, HP_EN, GAIN0, GAIN1, REG_EN 0.8 V T A Operating free-air temperature C T A VDD SPVDD HPVDD CPVDD V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SPKR_EN, HP_EN, GAIN0, GAIN1, I IH High-level input current 0.02 µ A REG_EN VDD SPKR_EN, HP_EN, GAIN0, GAIN1, I IL Low-level input current 0.02 µ A REG_EN V Supply current, speaker amplifier I DD(Speaker) SPKR_EN HP_EN REG_EN V mA ONLY enabled Supply current, headphone I DD(HP) SPKR_EN REG_EN HP_EN V 7.5 mA amplifier ONLY enabled Supply current, regulator ONLY I DD(REG) SPKR_EN HP_EN REG_EN V 0.65 mA enabled I DD(SD) Supply current, shutdown mode SPKR_EN HP_EN REG_EN V 2.5 µ A T A VDD SPVDD R L Ω Gain dB (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V OO Output offset voltage (measured differentially) Inputs AC-coupled to GND, Gain 0.5 mV dB PSRR Power supply rejection ratio VDD SPVDD 4.5 V to 5.5 V dB T A VDD SPVDD R L Ω Gain dB (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT THD+N 1%, f kHz, R L Ω 1.3 THD+N 10%, f kHz, R L Ω 1.6 P O Output power THD+N 1%, f kHz, R L Ω 2.1 W THD+N 10%, f kHz, R L Ω 2.6 P O R L Ω f Hz to kHz 0.06% THD+N Total harmonic distortion plus noise P O R L Ω f Hz to kHz 0.1% f kHz, CBYPASS 0.47 µ R L Ω kSVR Supply ripple rejection ratio dB V RIPPLE 200 mV PP Maximum output at THD+N 1%, f kHz, SNR Signal-to-noise ratio dB Gain dB f kHz, P o Gain dB 110 dB Crosstalk (Left-Right; Right-Left) f kHz, P o Gain dB 100 dB CBYPASS 0.47 µ f Hz to kHz, Vn Noise output voltage µ Vrms Gain dB, No weighting Z I Input Impedance Gain 21.6 dB k Ω GAIN0, GAIN1 0.8 V GAIN0 0.8 GAIN1 V G Gain dB GAIN0 GAIN1 0.8 V 14.6 15.6 16.6 GAIN0, GAIN1 V 20.6 21.6 22.6 Gain Matching Channel-to Channel 0.01 dB Start-up time from shutdown CBYPASS 0.47 µ F ms Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

www.ti.com T A HPVDD CPVDD VDD R L Ω (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V OS Output offset voltage Inputs grounded 1.5 mV PSRR Power supply rejection ratio HPVDD 4.5 V to 5.5 V 100 dB T A HPVDD R L Ω (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT THD+N 10%, R L Ω f kHz 100 P O Output power (outputs in phase) mW THD+N 10%, R L Ω f kHz P O mW, f Hz to kHz, 0.1 R L Ω THD+N Total harmonic distortion plus noise P O mW, f Hz to kHz, 0.1 R L Ω Dynamic Range with Signal Present A-Weighted, f Hz to kHz dB FS kSVR Supply ripple rejection ratio f kHz, 200-mV PP ripple -60 dB Crosstalk P o 2.8 mW, f Hz to kHz -90 dB V n Noise output voltage f Hz to kHz, No weighting µ Vrms Z I Input Impedance k Ω Gain Closed-loop voltage gain R L Ω 1.45 1.5 1.55 V/V Start-up time from shutdown ms T A VDD V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT V I Input voltage V DD 4.5 5.5 V I O Continuous output current 120 mA V O Output voltage I O 120 mA; 4.9 V Vin 5.5 V 4.65 4.75 4.85 V Line regulation I L mA; 4.9 V Vin 5.5 V 1.8 mV Load regulation I L 120 mA, Vin V 0.13 mV/ mA Power supply ripple rejection V DD 4.9 I L mA f 100 Hz dB Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

conditions: V CC Freq kHz, AES17 Filter. 0.0001 0.001 0.01 0.1 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz THD+N□-□Total□Harmonic□Distortion□-□% P =□0.25□WO P =□0.1□WO P =□1□WO Gain□=□10□dB, R =□8 , V =□5□V L DD /c87 0.001 0.01 0.1 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz THD+N□-□T otal□Harmonic□Distortion□+□Noise□-□% Gain□=□10□dB, R =□4 , V =□5□V L DD /c87 P =□0.25□WO P =□1□WO P =□1.5□WO f − Frequency − Hz 10 100 1k 10k THD+N − T otal□Harmonic□Distortion□+□Noise − % 0.001 0.01 100k G003 0.1 PO =□50□mW Gain□=□3.5□dB R L =□16 Ω VDD =□5□V PO =□25□mW PO =□2.8□mW f − Frequency − Hz 10 100 1k 10k THD+N − T otal□Harmonic□Distortion□+□Noise − % 0.001 0.01 100k G004 0.1 Gain□=□3.5□dB R L =□32 Ω VDD =□5□V PO =□1.4□mW PO =□25□mW PO =□12.5□mW TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 TOTAL HARMONIC DISTORTION NOISE (SP) TOTAL HARMONIC DISTORTION NOISE (SP) vs vs FREQUENCY FREQUENCY Figure Figure TOTAL HARMONIC DISTORTION NOISE (HP) TOTAL HARMONIC DISTORTION NOISE (HP) vs vs FREQUENCY FREQUENCY Figure Figure Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

0.01 0.1 100 0.01 0.1 1 10 P -□Output□Power□-□WO THD+N□-□Total□Harmonic□Distortion□+□Noise□-□% V =□5.5□VDD V =□5□VDD V =□4.5□VDD Gain□=□10□dB, R =□4L /c87 0.01 0.1 100 0.01 0.1 1 10 THD+N□-□Total□Harmonic□Distortion□+□Noise□-□% P -□Output□Power□-□WO V =□5.5□VDD V =□4.5□VDD Gain□=□10□dB, R =□8L /c87 V =□5□VDD PO − Output□Power − W 0.1m 1m 100m THD+N − Total□Harmonic□Distortion□+□Noise − % 0.001 0.01 Gain□=□3.5□dB R L =□16 Ω VDD =□5□V G007 0.1 10m In□Phase VDD =□5□V PO − Output□Power − W 0.1m 1m 100m THD+N − T otal□Harmonic□Distortion□+□Noise − % 0.001 0.01 G008 0.1 10m Gain□=□3.5□dB R L =□32 Ω VDD =□5□V VDD =□5□V In□Phase TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com TYPICAL CHARACTERISTICS (continued) TOTAL HARMONIC DISTORTION NOISE (SP) TOTAL HARMONIC DISTORTION NOISE (SP) vs vs OUTPUT POWER OUTPUT POWER Figure Figure TOTAL HARMONIC DISTORTION NOISE (HP) TOTAL HARMONIC DISTORTION NOISE (HP) vs vs OUTPUT POWER OUTPUT POWER Figure Figure Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

-140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz Crosstalk□-□dB Gain□=□10□dB, Power□=□1□W, R =□4 , V =□5□V L DD /c87 L to□R R□to□L -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz Crosstalk□-□dB L to□R R□to□L Gain□=□10□dB, P =□1□W, R =□8 , V =□5□V O L DD /c87 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz Crosstalk□-□dB L to□R R□to□L Gain□=□3.5□dB, P =□2.8□mW, R =□16 , V =□5□V O L DD /c87 -140 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz Crosstalk□-□dB Gain□=□10□dB, P =□2□W, R =□4 , V =□5□V O L DD /c87 L to□LDO R□to□LDO TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 TYPICAL CHARACTERISTICS (continued) CROSSTALK (SP) CROSSTALK (SP) vs vs FREQUENCY FREQUENCY Figure Figure 10. CROSSTALK (LDO) CROSSTALK (HP) vs vs FREQUENCY FREQUENCY Figure 11. Figure 12. Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

-120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz Crosstalk□-□dB L to□R R□to□L Gain□=□3.5□dB, P =□2.8□mW, R =□32 , V =□5□V O L DD /c87 −120 −110 −100 −90 −80 −70 −60 −50 −40 −30 −20 −10 f − Frequency − Hz Gain□=□3.5□dB P O =□35□mW RL =□16 Ω VDD =□5□V Crosstalk − dB 10 100 1k 100k 10k G012 L□to□R R□to□L −120 −110 −100 −90 −80 −70 −60 −50 −40 −30 −20 −10 f − Frequency − Hz Gain□=□3.5□dB P O =□35□mW RL =□32 Ω VDD =□5□V Crosstalk − dB 10 100 1k 100k 10k G013 L□to□R R□to□L 1.6 1.7 1.8 1.9 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.1 3.2 V -□Supply□Voltage□-□VDD P -□Output□Power□-□WO THD+N□=□1% THD+N□=□10% Gain□=□10□dB, R =□4L /c87 TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com TYPICAL CHARACTERISTICS (continued) CROSSTALK (HP) CROSSTALK (HP) vs vs FREQUENCY FREQUENCY Figure 13. Figure 14. CROSSTALK (HP) OUTPUT POWER (SP) vs vs FREQUENCY SUPPLY VOLTAGE Figure 15. Figure 16. Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 P -□Output□Power□-□WO I -□Supply□Current□- ACC Gain□=□10□dB, R =□8L /c87 V =□5□VDD V =□4.5□VDD V =□5.5□VDD 0.2 0.4 0.6 0.8 1.2 1.4 1.6 0 1 2 3 4 5 6 P -□Output□Power□-□WO I -□Supply□Current□- ACC Gain□=□10□dB, R =□4L /c87 V =□4.5□VDD V =□5□VDD V =□5.5□VDD 0.2 0.4 0.6 0.8 1.2 1.4 1.6 0 0.5 1 1.5 2 2.5 3 3.5 4 P -□Power□Dissipation□-□WD P -□Output□Power□-□WO V =□4.5□VDD V =□5.5□VDD V =□5□VDD Gain□=□10□dB, R =□8L /c87 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 2.2 2.4 2.6 2.8 3.2 0 1 2 3 4 5 6 P -□Power□Dissipation□-□WD P -□Output□Power□-□WO V =□4.5□VDD V =□5.5□VDD V =□5□VDD Gain□=□10□dB, R =□4L /c87 TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 TYPICAL CHARACTERISTICS (continued) SUPPLY CURRENT (SP) SUPPLY CURRENT (SP) vs vs TOTAL OUTPUT POWER TOTAL OUTPUT POWER Figure 17. Figure 18. POWER DISSIPATION (SP) POWER DISSIPATION (SP) vs vs TOTAL OUTPUT POWER TOTAL OUTPUT POWER Figure 19. Figure 20. Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

IL − Load□Current − mA 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 0 25 50 75 100 125 150 175 200 V DD Output□Supply□Voltage□-□V G022 VDD =□5.5□V VDD =□4.5□V VDD =□5□V V – Supply□Voltage – VDD 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 5.0 V oltage − V DD − Regulator□Output□V G021 IL = −120□mA IL = −10□mA IL = −50□mA IL = −1□mA -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz CMRR□-□Common□Mode□Rejection□Ratio□-□dB Gain□=□10□dB, Input□Level□=□0.2□V , R =□4 , V =□5□V PP L DD /c87 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz CMRR□-□Common□Mode□Rejection□Ratio□-□dB Gain□=□10□dB, Input□Level□=□0.2□V , R =□8 , V =□5□V PP L DD /c87 TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com TYPICAL CHARACTERISTICS (continued) REGULATOR OUTPUT VOLTAGE (LDO) OUTPUT SUPPLY VOLTAGE (LDO) vs vs SUPPLY VOLTAGE LOAD CURRENT Figure 21. Figure 22. COMMON-MODE REJECTION RATIO (SP) COMMON-MODE REJECTION RATIO (SP) vs vs FREQUENCY FREQUENCY Figure 23. Figure 24. Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

-80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz kSVR□-□Supply□Ripple□Rejection□Ratio□-□dB I =□10□mA, V =□0.20□V , V =□5□V O ripple PP DD -80 -70 -60 -50 -40 -30 -20 -10 10 100 1□k 10□k 100□k f□-□Frequency□-□Hz kSVR□-□Supply□Ripple□Rejection□Ratio□-□dB Gain□=□10□dB, R =□8 , V =□5□V L DD /c87 V =□0.20□V ,ripple PP −100 −90 −80 −70 −60 −50 −40 −30 −20 −10 kSVR − Supply□Ripple□Rejection□Ratio − dB f − Frequency − Hz 10 100 1k 10k 100k Gain□=□3.5□dB, RL =□16 Ω , VDD =□5□V, Vripple =□0.20□VPP TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 TYPICAL CHARACTERISTICS (continued) SUPPLY RIPPLE REJECTION RATIO (LDO) SUPPLY RIPPLE REJECTION RATIO (SP) vs vs FREQUENCY FREQUENCY Figure 25. Figure 26. SUPPLY RIPPLE REJECTION RATIO (HP) vs FREQUENCY Figure 27. Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

www.ti.com TYPICAL CHARACTERISTICS (continued) SPEAKER SHUTDOWN Ω dB SPEAKER STARTUP Ω dB Figure 28. Figure 29. HP SHUTDOWN Ω HP STARTUP Ω Figure 30. Figure 31. Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

SPKR_RIN– SPKR_RIN+ SPGND SPVDD CPVDD CPVSSHPVSS HP_OUTR HP_OUTLCPGNDC1P C1N LOUT- BYPASS GAIN1GAIN0 VDD SGNDHP_INLHP_INR REG_OUT REG_EN SPKR□Right□Input SPKR_LIN+SPKR□Left□Input SPKR_LIN– 4.5□V□-□5.5□V

10 F/c109

3□V□-□5.5□V SPKR_EN HP_EN Headphone□Enable Speaker□Enable 0.47 /c109F Regulator□Enable{ 4-Step Gain□Control 2.2 /c109F 0.1/c109F 1/c109F 4.5 V - 5.5 V 4.75□V (Output) HP Right□Input HP Left□Input 3□V□-□5.5□V 4.5□V□-□5.5□V TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 Figure 32. Single-Ended Input Application Circuit Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

SPKR_RIN– SPKR_RIN+ SPGND SPVDD CPVDD CPVSSHPVSS HP_OUTR HP_OUTLCPGNDC1P C1N LOUT- BYPASS GAIN1GAIN0 VDD SGNDHP_INLHP_INR REG_OUT REG_EN SPKR□Right□(+)□Input SPKR□Right□(–)□Input SPKR_LIN+SPKR□Left□(+)□Input 4.5□V□-□5.5□V 3□V□-□5.5□V SPKR_EN HP_EN Headphone□Enable Speaker□Enable 0.47 /c109F Regulator□Enable{ 4-Step Gain□Control 2.2 /c109F 0.1/c109F 1/c109F 4.5 V - 5.5 V 4.75□V (Output) HP Right□Input HP Left□Input www.ti.com Figure 33. Differential Input Application Circuit The TPA6047A4 allows the disabling of any or all of the main circuit blocks when not in use in order to reduce operating power to an absolute minimum. The SPKR_EN control can be used to disable the speaker amplifier while the HP_EN can be used separately to turn off the headphone amplifier. The LDO also has an independent power control, REG_EN. With all circuit blocks disabled, the supply current in shutdown mode is only µ See the General DC Electrical Characteristics for operating currents with each circuit block operating independently. The speaker amplifier is capable of driving 2.1 W/ch of continuous RMS power into a Ω load at TPA6047A4 has 4-step gain control from dB to 21.6 dB. The TPA6047A4 speaker amplifier is a fully differential amplifier with differential inputs and outputs. The fully differential architecture consists of a differential amplifier and a common mode amplifier. The differential amplifier ensures that the amplifier outputs a differential voltage that is equal to the differential input times the gain. The common-mode voltage at the output is biased around V DD regardless of the common-mode voltage at the input. Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

Capacitor, C I (1) C I/C00431 2/C0112R Ifc (2) TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 One of the primary advantages of the fully differential amplifier is improved RF immunity. GSM handsets save power by turning on and off the RF transmitter at a rate of 217 Hz. The transmitted signal is picked up on input and output traces. The fully differential amplifier cancels the signal and others of this type much better than typical audio amplifiers. The gain of the TPA6047A4 is set by two terminals, GAIN0 and GAIN1. The gains listed in Table are realized by changing the taps on the input resistors and feedback resistors inside the amplifier. This causes the input impedance I to vary as a function of the gain setting. Table Gain Setting AMPLIFIER GAIN INPUT IMPEDANCE Ω (dB) GAIN1 GAIN0 TYPICAL TYPICAL 15.6 21.6 The input capacitor allows the amplifier to bias the input signal to the proper dc level for proper operation. In this case, the input capacitor, C I and the input impedance of the amplifier, R I form a high-pass filter with the corner frequency determined in Equation Figure shows how the input capacitor and the input resistor within the amplifier interact. Figure 34. Input Resistor and Input Capacitor The value of C I is important to consider as it directly affects the low-frequency, or bass, performance of the circuit. Furthermore, the input impedance changes with a change in volume. The higher the volume, the lower the input impedance is. To determine the appropriate capacitor value, reconfigure Equation into Equation The value of the input resistor, R I can be determined from Equation Low-leakage tantalum or ceramic capacitors are recommended. When polarized capacitors are used, the positive side of the capacitor should face the amplifier input in most VCC/2, which is likely higher than the source dc level. Note that it is important to confirm the capacitor polarity in each specific application. Recommended capacitor values are between 0.1 µ F and µ Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

V (RMS) /C0043 V O(PP) 2 2/C0504 Power /C0043 V (RMS) R L (3) R L 2x VO(PP) VO(PP) −VO(PP) VDD VDD RL CC VO(PP) VO(PP) VDD –3□dB fc TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com Windows Vista Premium Mobile Mode Specifications Windows Premium Mobile Vista Device Type Requirement TPA6047A4 Typical Performance Specifications THD+N dB FS [20 Hz, kHz] dB FS[20 Hz, kHz] Analog Speaker Line Jack Dynamic Range with Signal L k Ω FS 0.707 dB FS A-Weight dB FS A-Weight Present Vrms) Line Output Crosstalk dB [20 Hz, kHz] 105 dB [20 Hz, kHz] THD+N dB FS [20 Hz, kHz] dB FS [20 Hz, kHz] Analog Headphone Out Jack Dynamic Range with Signal L Ω FS 0.300 dB FS A-Weight dB FS A-Weight Present Vrms) Headphone Output Crosstalk dB [20 Hz, kHz] 100 dB [20 Hz, kHz] Figure shows a Class-AB audio power amplifier (APA) in a bridge-tied-load (BTL) configuration. The TPA6047A4 speaker amplifier consists of two Class-AB differential amplifiers per channel driving the positive and negative terminals of the load. Specifically, differential drive means that as one side of the amplifier (the positive terminal, for example) is slewing up, the other side is slewing down, and vice versa. This doubles the voltage swing across the load as opposed to a ground-referenced load, or a single-ended load. Power is proportional to the square of the voltage. Plugging VO(PP) into the power equation yields the output power from the same supply rail and load impedance as would have been obtained with a ground-referenced load (see Equation Figure 35. Differential Output Configuration Figure 36. Single-Ended Configuration and Frequency Response Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

(4) C O /C00431 2/C0112R Lfc (5) TPA6047A4 www.ti.com SLOS601 OCTOBER 2008 Bridge-tying the outputs in a typical computer audio, LCD TV, or multimedia LCD monitor application drastically increases output power. For example, if an amplifier in a single-ended configuration was capable of outputting a maximum of 250 mW for a given load with a supply voltage of then that same amplifier would be able to output W of power in a BTL configuration with the same supply voltage and load. In addition to the increase in output power, the BTL configuration does not suffer from the same low-frequency issues that plague the single-ended configuration. In a BTL configuration, there is no need for an output capacitor to block dc, so no unwanted filtering occurs. In addition, the BTL configuration saves money and space, as the dc-blocking capacitors needed for single-ended operation are large and expensive. For example, with an Ω load in SE operation, the user needs a 1000- µ F capacitor to obtain a cutoff frequency below Hz. This capacitor is expensive and large. The headphone amplifier has a fixed gain of 1.5 V/V. It uses single-ended (SE) inputs. 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. The DirectPath amplifier requires no output dc blocking capacitors and does not place any voltage on the sleeve. The block diagram and waveform of Figure illustrate the ground-referenced headphone architecture. This is the architecture of the TPA6047A4. Single-supply headphone amplifiers typically require dc-blocking capacitors. The capacitors are required because most headphone amplifiers have a dc bias on the outputs pin. If the dc bias is not removed, the output signal is severely clipped, and large amounts of dc current rush through the headphones, potentially damaging them. The left-side drawing in Figure illustrates the conventional headphone amplifier connection to the headphone jack and output signal. DC blocking capacitors are often large in value. The headphone speakers (typical resistive values of Ω or Ω combine with the dc blocking capacitors to form a high-pass filter. Equation shows the relationship between the load impedance L the capacitor O and the cutoff frequency C C O can be determined using Equation where the load impedance and the cutoff frequency are known. If f c is low, the capacitor must then have a large value because the load resistance is small. Large capacitance values require large package sizes. Large package sizes consume PCB area, stand high above the PCB, increase cost of assembly, and can reduce the fidelity of the audio output signal. Two different headphone amplifier capacitors. The capacitor-less amplifier architecture is implemented in the same manner as the conventional amplifier with the exception of the headphone jack shield pin. This amplifier provides a reference voltage, which is connected to the headphone jack shield pin. This is the voltage on which the audio output signals are centered. This voltage reference is half of the amplifier power supply to allow symmetrical swing of the output voltages. Do not connect the shield to any GND reference, or large currents will result. The scenario can happen if, for example, an accessory other than a floating GND headphone is plugged into the headphone connector. See the second block diagram and waveform in Figure Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

C(DCINPUT-BLOCKING) 2CIN = (6) TPA6047A4 SLOS601 OCTOBER 2008 www.ti.com Figure 37. Amplifier bias. Maximum performance is achieved when the inputs of the TPA6047A4 are properly biased. Performance issues such as pop are optimized with proper input capacitors. The dc input-blocking capacitors can be removed, provided the inputs are connected differentially and within the input common-mode range of the amplifier, the audio signal does not exceed and pop performance is sufficient. C IN is a theoretical capacitor used for mathematical calculations only. Its value is the series combination of the dc input-blocking capacitors, C (DCINPUT-BLOCKING) Use Equation to determine the value of C (DCINPUT-BLOCKING) For example, if C IN is equal to 0.22 µ then C (DCINPUT-BLOCKING) is equal to about 0.47 µ The two C (DCINPUT-BLOCKING) capacitors form a high-pass filter with the input impedance of the TPA6047A4. Use Equation to calculate C IN then calculate the cutoff frequency using C IN and the differential input impedance of the TPA6047A4, R IN using Equation Note that the differential input impedance changes with gain. See Table for input impedance values. The frequency and/or capacitance can be determined when one of the two values are given. Submit Documentation Feedback Copyright 2008, Texas Instruments Incorporated Product Folder Link(s): TPA6047A4

or (7) Charge Pump Flying Capacitor and CPVSS Capacitor Decoupling Capacitors Midrail Bypass Capacitor, C BYPASS Low Dropout Regulator (LDO) www.ti.com SLOS601 OCTOBER 2008 If a high-pass filter with a 3-dB point of no more than Hz is desired over all gain settings, the minimum impedance would be used in the Equation The minimum input impedance for TPA6047A4 is k Ω The capacitor value by Equation would be 0.399 µ However, this is C IN and the desired value is for C (DCINPUT-BLOCKING) Multiplying C IN by yields 0.80 µ which is close to the standard capacitor value of µ Place µ F capacitors at each input terminal of the TPA6047A4 to complete the filter. The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage. The CPVSS capacitor must be at least equal to the flying capacitor in order to allow maximum charge transfer. Low ESR capacitors are an ideal selection, and a value of µ F is typical. Use X5R or better cermaic material. The TPA6047A4 is a DirectPath headphone amplifier that requires adequate power supply decoupling to ensure that the noise and total harmonic distortion (THD) are as low as possible. To filter high-frequency transients, spikes, and digital hash on the power line, use good low equivalent-series-resistance (ESR) ceramic capacitors, typically µ Find the smallest package possible, and place as close as possible to the device V DD lead. Placing the decoupling capacitors close to the TPA6047A4 is important for the performance of the amplifier. Use a µ F or greater capacitor near the TPA6047A4 to filter lower frequency noise signals; however, the high PSRR of the TPA6047A4 makes the 10- µ F capacitor unnecessary in most applications. The midrail bypass capacitor, C (BYPASS) has several important functions. During start-up or recovery from shutdown mode, C BYPASS determines the rate at which the amplifier starts up. A µ F capacitor yields a start-up time of approximately ms. C BYPASS also reduces the noise coupled into the output signal by the power supply. This improves the power supply ripple rejection (PSRR) of the amplifier. Ceramic or polyester capacitors with low ESR and values in the range of 0.47 µ F to µ F are recommended. The TPA6047A4 contains a 4.75-V output low dropout regulator (LDO) capable of providing 120 mA with a drop of less than 150 mV from the 5-V supply. This can be used to power an external CODEC. A 10- µ F decoupling capacitor is recommended at the output of the LDO as well as 0.1- µ F capacitor to filter high-frequency noise from the supply line. Solder the exposed thermal pad (metal pad on the bottom of the part) on the TPA6047A4 QFN package to a ground pad on the PCB. Fore more information, see the land pattern drawing. It is important to keep the TPA6047A4 external components close to the body of the amplifier to limit noise pickup. One should lay out the differential input leads symmetrical and close together to take advantage of the inherent common mode rejection of the TPA6047A4. The layout of the TPA6047A4 evaluation module (EVM) is a good example of component placement and the layout files are available at www.ti.com Copyright 2008, Texas Instruments Incorporated Submit Documentation Feedback Product Folder Link(s): TPA6047A4

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Reel Diameter (mm) Reel Width W1 (mm) (mm) (mm) (mm) (mm) W (mm) Pin1 Quadrant PACKAGE MATERIALS INFORMATION www.ti.com 18-Aug-2014 Pack Materials-Page 1

*All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPA6047A4RHBR VQFN RHB 32 3000 367.0 367.0 35.0 PACKAGE MATERIALS INFORMATION www.ti.com 18-Aug-2014 Pack Materials-Page 2

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Summary

2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPath STEREO HEADPHONE DRIVE AND REGULATOR

Description