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TPA6211A1DRB

TPA6211A1DRB

  • 厂商:

    BURR-BROWN(德州仪器)

  • 封装:

    VDFN8_EP

  • 描述:

    Amplifier IC 1-Channel (Mono) Class AB 8-SON Exposed Pad (3x3)

  • 数据手册
  • 价格&库存
TPA6211A1DRB 数据手册
Product Folder Sample & Buy Support & Community Tools & Software Technical Documents TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 TPA6211A1 3.1-W Mono Fully Differential Audio Power Amplifier 1 Features 3 Description • The TPA6211A1 is a 3.1-W mono fully-differential amplifier designed to drive a speaker with at least 3Ω impedance while consuming only 20 mm2 total printed-circuit board (PCB) area in most applications. The device operates from 2.5 V to 5.5 V, drawing only 4 mA of quiescent supply current. The TPA6211A1 is available in the space-saving 3-mm × 3-mm SON (DRB) and the 8-pin MSOPPowerPAD™ (DGN) packages. 1 • • • • • Designed for Wireless or Cellular Handsets and PDAs 3.1 W Into 3 Ω From a 5-V Supply at THD = 10% (Typ) Low Supply Current: 4 mA Typ at 5 V Shutdown Current: 0.01 μA Typ Fast Startup With Minimal Pop Only Three External Components – Improved PSRR (–80 dB) and Wide Supply Voltage (2.5 V to 5.5 V) for Direct Battery Operation – Fully Differential Design Reduces RF Rectification – –63 dB CMRR Eliminates Two Input Coupling Capacitors Features like –80 dB supply voltage rejection from 20 Hz to 2 kHz, improved RF rectification immunity, small PCB area, and a fast startup with minimal pop makes the TPA6211A1 ideal for PDA and smart phone applications. Device Information(1) PART NUMBER TPA6211A1 2 Applications • PACKAGE BODY SIZE (NOM) MSOP-PowerPAD (8) 3.00 mm × 3.00 mm SON (8) 3.00 mm × 3.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Ideal for Wireless Handsets, PDAs, and Notebook Computers Application Circuit V DD 6 Cs 40 kΩ RI 4 IN– + RI 3 IN+ – In from DAC _ 1 V O+ 5 V O– 8 + 40 kΩ SHUTDOWN To Battery GND 7 Bias Circuitry 100 kΩ (1) C(BYPASS) 2 (1) C (BYPASS) is optional. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com Table of Contents 1 2 3 4 5 6 7 8 9 Features .................................................................. Applications ........................................................... Description ............................................................. Revision History..................................................... Device Comparison Table..................................... Pin Configuration and Functions ......................... Specifications......................................................... 1 1 1 2 3 3 4 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 4 4 4 4 4 5 6 6 Absolute Maximum Ratings ...................................... ESD Ratings.............................................................. Recommended Operation Conditions....................... Thermal Information .................................................. Electrical Characteristics........................................... Operating Characteristics.......................................... Dissipation Ratings ................................................... Typical Characteristics .............................................. Parameter Measurement Information ................ 11 Detailed Description ............................................ 12 9.1 Overview ................................................................. 12 9.2 Functional Block Diagram ....................................... 12 9.3 Feature Description................................................. 12 9.4 Device Functional Modes........................................ 17 10 Application and Implementation........................ 18 10.1 Application Information.......................................... 18 10.2 Typical Application ............................................... 18 10.3 System Examples ................................................. 22 11 Power Supply Recommendations ..................... 24 11.1 Power Supply Decoupling Capacitor .................... 24 12 Layout................................................................... 24 12.1 Layout Guidelines ................................................. 24 12.2 Layout Examples................................................... 24 13 Device and Documentation Support ................. 26 13.1 13.2 13.3 13.4 13.5 13.6 Device Support...................................................... Documentation Support ....................................... Community Resources.......................................... Trademarks ........................................................... Electrostatic Discharge Caution ............................ Glossary ................................................................ 26 26 26 26 26 26 14 Mechanical, Packaging, and Orderable Information ........................................................... 26 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (June 2011) to Revision E • Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section. ................................................................................................ 1 Changes from Revision C (June 2008) to Revision D • 2 Page Deleted the Lead temperature 1,6 mm (1/16 Inch) from case for 10 seconds row from the Abs Max Table ........................ 4 Changes from Revision B (August 2004) to Revision C • Page Page Changed Storage temperature From: –65°C to 85°C To: –65°C to 150°C............................................................................ 4 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 5 Device Comparison Table DEVICE NUMBER SPEAKER CHANNELS SPEAKER AMP TYPE OUTPUT POWER (W) PSRR (dB) TPA6211A1 Mono Class-AB 3.1 85 TPA6203A1 Mono Class-AB 1.25 90 TPA6204A1 Mono Class-AB 1.7 85 TPA6205a1 Mono Class-AB 1.25 90 6 Pin Configuration and Functions DGN Package 8-Pin MSOP-PowerPAD Top View DRB Package 8-Pin SON With Exposed Thermal Pad Top View SHUTDOWN 1 8 VO– BYPASS 2 7 GND IN+ 3 6 VDD IN– 4 5 VO+ SHUTDOWN 1 BYPASS 2 8 VO– 7 GND IN+ 3 6 VDD 4 5 VO+ IN– Pin Functions PIN NAME NO. I/O DESCRIPTION BYPASS 2 – Mid-supply voltage, adding a bypass capacitor improves PSRR GND 7 I High-current ground IN+ 3 I Positive differential input IN- 4 I Negative differential input SHUTDOWN 1 I Shutdown terminal (active low logic) VDD 6 I Power supply VO+ 5 O Positive BTL output VO- 8 O Negative BTL output Thermal Pad – – Connect to ground. Thermal pad must be soldered down in all applications to properly secure device on the PCB. Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 3 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 7 Specifications 7.1 Absolute Maximum Ratings over operating free-air temperature range unless otherwise noted (1) VD MIN MAX UNIT Supply voltage –0.3 6 V Input voltage –0.3 VDD + 0.3 V D VI Continuous total power dissipation See Dissipation Ratings TA Operating free-air temperature –40 85 °C TJ Junction temperature –40 150 °C Tstg Storage temperature –65 150 °C (1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 7.2 ESD Ratings VALUE V(ESD) (1) (2) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±4000 Charged-device model (CDM), per JEDEC specification JESD22C101 (2) ±1000 UNIT V JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process. JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process. 7.3 Recommended Operation Conditions MIN VDD Supply voltage VIH High-level input voltage SHUTDOWN VIL Low-level input voltage SHUTDOWN TA Operating free-air temperature NOM 2.5 MAX 5.5 1.55 UNIT V V –40 0.5 V 85 °C 7.4 Thermal Information TPA6211A1 THERMAL METRIC (1) DGN (MSOPPowerPAD™) DRB (SON) UNIT 8 PINS 8 PINS RθJA Junction-to-ambient thermal resistance 62.8 49.2 °C/W RθJC(top) Junction-to-case (top) thermal resistance 61.9 24.8 °C/W RθJB Junction-to-board thermal resistance 42.1 58.8 °C/W ψJT Junction-to-top characterization parameter 3.3 1.7 °C/W ψJB Junction-to-board characterization parameter 41.9 25 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance 11 8.4 °C/W (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. 7.5 Electrical Characteristics TA = 25°C PARAMETER TEST CONDITIONS VOS Output offset voltage (measured differentially) VI = 0 V differential, Gain = 1 V/V, VDD = 5.5 V PSRR Power supply rejection ratio VDD = 2.5 V to 5.5 V VIC Common mode input range VDD = 2.5 V to 5.5 V 4 Submit Documentation Feedback MIN TYP MAX -9 0.3 9 mV –60 dB VDD-0.8 V –85 0.5 UNIT Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 Electrical Characteristics (continued) TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VDD = 5.5 V, VIC = 0.5 V to 4.7 V -63 –40 VDD = 2.5 V, VIC = 0.5 V to 1.7 V -63 –40 RL = 4 Ω, VIN+ = VDD, VIN+ = 0 V, VDD = 5.5 V Gain = 1 V/V, VIN- = 0 V or VDD = 3.6 V VIN- = VDD VDD = 2.5 V 0.45 RL = 4 Ω, VIN+ = VDD, VIN- = VDD VDD = 5.5 V Gain = 1 V/V, VIN- = 0 V or VDD = 3.6 V VIN+ = 0 V VDD = 2.5 V 4.95 High-output swing | IIH | High-level input current, shutdown VDD = 5.5 V, VI = 5.8 V 58 100 μA | IIL | Low-level input current, shutdown VDD = 5.5 V, VI = –0.3 V 3 100 μA IQ Quiescent current VDD = 2.5 V to 5.5 V, no load 4 5 mA Supply current V(SHUTDOWN) ≤ 0.5 V, VDD = 2.5 V to 5.5 V, RL = 4Ω 0.01 1 μA Gain RL = 4Ω CMRR Common mode rejection ratio Low-output swing I(SD) 0.37 0.26 V 0.4 3.18 2 38 kW RI V 2.13 40 kW RI Resistance from shutdown to GND dB 42 kW RI 100 V/V kΩ 7.6 Operating Characteristics TA = 25°C, Gain = 1 V/V PARAMETER TEST CONDITIONS THD + N= 1%, f = 1 kHz, RL = 3 Ω PO Output power THD + N= 1%, f = 1 kHz, RL = 4 Ω THD + N= 1%, f = 1 kHz, RL = 8 Ω MIN VDD = 5 V 2.45 VDD = 3.6 V 1.22 VDD = 2.5 V 0.49 VDD = 5 V 2.22 VDD = 3.6 V 1.1 VDD = 2.5 V 0.47 VDD = 5 V 1.36 VDD = 3.6 V 0.72 VDD = 2.5 V f = 1 kHz, RL = 3 Ω Total harmonic distortion plus THD+N noise f = 1 kHz, RL = 4 Ω f = 1 kHz, RL = 8 Ω TYP MAX W 0.33 PO = 2 W VDD = 5 V PO = 1 W VDD = 3.6 V 0.05% PO = 300 mW VDD = 2.5 V 0.06% PO = 1.8 W VDD = 5 V 0.03% PO = 0.7 W VDD = 3.6 V 0.03% PO = 300 mW VDD = 2.5 V 0.04% PO = 1 W VDD = 5 V 0.02% PO = 0.5 W VDD = 3.6 V 0.02% PO = 200 mW VDD = 2.5 V 0.045% 0.03% f = 217 Hz -80 f = 20 Hz to 20 kHz -70 kSVR Supply ripple rejection ratio VDD = 3.6 V, Inputs ac-grounded with Ci = 2 μF, V(RIPPLE) = 200 mVpp SNR Signal-to-noise ratio VDD = 5 V, PO = 2 W, RL = 4 Ω Vn Output voltage noise VDD = 3.6 V, f = 20 Hz to 20 kHz, Inputs ac-grounded with Ci = 2 μF No weighting 15 A weighting 12 CMRR Common mode rejection ratio VDD = 3.6 V, VIC = 1 Vpp f = 217 Hz ZI Input impedance dB 105 dB μVRMS -65 38 40 dB 44 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 UNIT kΩ 5 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com Operating Characteristics (continued) TA = 25°C, Gain = 1 V/V PARAMETER TEST CONDITIONS MIN VDD = 3.6 V, No CBYPASS Start-up time from shutdown VDD = 3.6 V, CBYPASS = 0.1 μF TYP MAX UNIT 4 μs 27 ms 7.7 Dissipation Ratings (1) PACKAGE TA ≤ 25°C POWER RATING DERATING FACTOR (1) TA= 70°C POWER RATING TA= 85°C POWER RATING DGN 2.13 W 17.1 mW/°C 1.36 W 1.11 W DRB 2.7 W 21.8 mW/°C 1.7 W 1.4 W Derating factor based on high-k board layout. 7.8 Typical Characteristics Table 1. Table of Graphs FIGURE PO Output power PD Power dissipation THD+N Total harmonic distortion + noise vs Supply voltage Figure 1 vs Load resistance Figure 2 vs Output power Figure 3, Figure 4 vs Output power Figure 5, Figure 6, Figure 7 vs Frequency Figure 8, Figure 9, Figure 10, Figure 11, , Figure 12 vs Common-mode input voltage Figure 13 KSVR Supply voltage rejection ratio vs Frequency Figure 14, Figure 15, Figure 16, Figure 17 KSVR Supply voltage rejection ratio vs Common-mode input voltage Figure 18 GSM Power supply rejection vs Time Figure 19 GSM Power supply rejection vs Frequency Figure 20 vs Frequency Figure 21 vs Common-mode input voltage Figure 22 Closed loop gain/phase vs Frequency Figure 23 Open loop gain/phase vs Frequency Figure 24 vs Supply voltage Figure 25 vs Shutdown voltage Figure 26 vs Bypass capacitor Figure 27 CMRR IDD Common-mode rejection ratio Supply current Start-up time 6 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 3.5 3.5 f = 1 kHz Gain = 1 V/V 3 3 VDD = 5 V, THD 1% PO - Output Power - W PO - Output Power - W PO = 4 Ω, THD 10% PO = 3 Ω, THD 1% 2.5 PO = 4 Ω, THD 1% 2 PO = 8 Ω, THD 10% PO = 8 Ω, THD 1% 1.5 1 0.5 2.5 VDD = 3.6 V, THD 10% 2 VDD = 3.6 V, THD 1% 1.5 VDD = 2.5 V, THD 10% VDD = 2.5 V, THD 1% 1 0.5 0 2.5 0 3 3.5 4 VDD - Supply Voltage - V 4.5 3 5 13 18 23 28 Figure 2. Output Power vs Load Resistance 1.4 0.8 VDD = 3.6 V 4Ω VDD = 5 V 0.7 1.2 4Ω 0.6 PD - Power Dissiaption - W PD - Power Dissiaption - W 8 RL - Load Resistance - Ω Figure 1. Output Power vs Supply Voltage 0.5 0.4 8Ω 0.3 0.2 0 0 0.3 0.6 0.9 1.2 PO - Output Power - W 1.5 0.8 8Ω 0.6 0.4 0 1.8 Figure 3. Power Dissipation vs Output Power 0 0.3 0.6 0.9 1.2 PO - Output Power - W 1.5 1.8 Figure 4. Power Dissipation vs Output Power 20 10 RL = 3 Ω, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V THD+N - Total Harmonic Distortion + Noise - % 5 1 0.2 0.1 THD+N - Total Harmonic Distortion + Noise - % f = 1 kHz Gain = 1 V/V VDD = 5 V, THD 10% PO = 3 Ω, THD 10% 2 1 0.5 0.2 2.5 V 3.6 V 0.1 5V 0.05 0.02 0.01 20m 50m 100m 200m 500m 1 2 3 10 5 2 1 0.5 2.5 V 0.2 3.6 V 5V 0.1 0.05 0.02 0.01 10m 20m PO - Output Power - W Figure 5. Total Harmonic Distortion + Noise vs Output Power RL = 4 Ω, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V 50m 100m 200m 500m 1 PO - Output Power - W 2 3 Figure 6. Total Harmonic Distortion + Noise vs Output Power Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 7 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 10 5 10 RL = 8 Ω, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V THD+N - Total Harmonic Distortion + Noise - % THD+N - Total Harmonic Distortion + Noise - % 20 2 1 2.5 V 0.5 3.6 V 0.2 5V 0.1 0.05 0.02 0.01 10m 20m 1W 0.2 0.1 2W 0.05 0.02 0.01 20 50 100 200 500 1k 2k f - Frequency - Hz 5k 10k 20k Figure 8. Total Harmonic Distortion + Noise vs Frequency 10 VDD = 5 V, RL = 4 Ω,, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V, CI = 2 µF 5 2 1 THD+N - Total Harmonic Distortion + Noise - % THD+N - Total Harmonic Distortion + Noise - % 1 0.5 2 3 10 2W 0.5 1.8 W 0.2 1W 0.1 0.05 0.02 0.01 VDD = 3.6 V, RL = 4 Ω,, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V, CI = 2 µF 5 2 1 0.5 1W 0.1 W 0.2 0.5 W 0.1 0.05 0.02 0.01 0.005 0.002 0.001 0.005 20 50 100 200 500 1k 2k f - Frequency - Hz 10 1 0.5 0.4 W 0.2 0.28 W 0.1 100 200 500 1k 2k f - Frequency - Hz 5k 10k 20k Figure 10. Total Harmonic Distortion + Noise vs Frequency THD+N - Total Harmonic Distortion + Noise - % 2 50 10 VDD = 2.5 V, RL = 4 Ω,, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V, CI = 2 µF 5 20 5k 10k 20k Figure 9. Total Harmonic Distortion + Noise vs Frequency THD+N - Total Harmonic Distortion + Noise - % 2 0.005 50m 100m 200m 500m 1 PO - Output Power - W Figure 7. Total Harmonic Distortion + Noise vs Output Power 0.05 0.02 0.01 0.005 0.002 0.001 VDD = 3.6 V, RL = 8 Ω,, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V, CI = 2 µF 5 2 1 0.5 0.25 W 0.6 W 0.2 0.1 W 0.1 0.05 0.02 0.01 0.005 0.002 0.001 20 50 100 200 500 1k 2k f - Frequency - Hz 5k 10k 20k Figure 11. Total Harmonic Distortion + Noise vs Frequency 8 VDD = 5 V, RL = 3 Ω,, C(BYPASS) = 0 to 1 µF, Gain = 1 V/V, CI = 2 µF 5 20 50 100 200 500 1k 2k f - Frequency - Hz 5k 10k 20k Figure 12. Total Harmonic Distortion + Noise vs Frequency Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 +0 f = 1 kHz PO = 200 mW, RL = 1 kHz 0.058 0.056 k SVR - Supply Voltage Rejection Ratio - dB THD+N - Total Harmonic Distortion + Noise - % 0.06 0.054 0.052 VDD = 2.5 V 0.05 VDD = 5 V 0.048 0.046 VDD = 3.6 V 0.044 0.042 0.04 0 1 2 3 4 VIC - Common Mode Input Voltage - V -30 -40 -50 -60 VDD = 3.6 V VDD = 2.5 V -70 -80 -90 VDD = 5 V -10 -20 -30 -50 VDD = 3.6 V -70 -80 VDD = 5 V -90 20 50 100 200 500 1k 2k 5k 100 200 -20 -30 -50 -60 -70 -80 -90 50 100 200 −40 C(BYPASS) = 0.1 µF No C(BYPASS) −70 −80 −90 −100 20 C(BYPASS) = 1 µF C(BYPASS) = 0.47 µF 50 100 200 500 1k 2k 5k 10k 20k Figure 16. Supply Ripple Rejection Ratio vs Frequency 0 RL = 4 Ω,, CI = 2 µF, Gain = 1 V/V, VDD = 3.6 V −60 500 1k f - Frequency - Hz −30 −50 10k 20k -40 20 k SVR − Supply Voltage Rejection Ratio − dB k SVR − Supply Voltage Rejection Ratio − dB −20 5k -100 10k 20k Figure 15. Supply Voltage Rejection Ratio vs Frequency −10 2k RL = 4 Ω,, C(BYPASS) = 0.47 µF, CI = 2 µF, VDD = 2.5 V to 5 V Inputs Floating -10 f - Frequency - Hz +0 500 1k Figure 14. Supply Voltage Rejection Ratio vs Frequency +0 -40 VDD = 2.5 V 50 f - Frequency - Hz RL = 4 Ω,, C(BYPASS) = 0.47 µF, Gain = 5 V/V, CI = 2 µF, Inputs ac Grounded -60 20 5 k SVR - Supply Voltage Rejection Ratio - dB +0 k SVR - Supply Voltage Rejection Ratio - dB -20 -100 Figure 13. Total Harmonic Distortion + Noise vs Common Mode Input Voltage -100 RL = 4 Ω,, C(BYPASS) = 0.47 µF, Gain = 1 V/V, CI = 2 µF, Inputs ac Grounded -10 2k 5k 10k 20k −20 −30 −40 VDD = 2.5 V VDD = 3.6 V −50 −60 −70 VDD = 5 V −80 −90 −100 f − Frequency − Hz Figure 17. Supply Voltage Rejection Ratio vs Frequency RL = 4 Ω,, CI = 2 µF, Gain = 1 V/V, C(BYPASS) = 0.47 µF VDD = 3.6 V, f = 217 Hz, Inputs ac Grounded −10 0 1 2 3 4 DC Common Mode Input − V 5 6 Figure 18. Supply Voltage Rejection Ratio vs DC Common Mode Input Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 9 TPA6211A1 www.ti.com 0 VDD −50 −100 RL = 8 Ω CI = 2.2 µF VOUT C(BYPASS) = 0.47 µF VDD Shown in Figure 19, RL = 8 Ω, CI = 2.2 µF, Inputs Grounded −100 −140 −160 C(BYPASS) = 0.47 µF 400 t − Time − ms Figure 19. GSM Power Supply Rejection vs Time -20 -30 -40 VDD = 2.5 V -60 -70 VDD = 5 V -80 -90 50 100 200 500 1k 2k 5k RL = 4 Ω,, Gain = 1 V/V, dc Change in VIC -10 -20 -30 -40 -50 VDD = 2.5 V -60 -80 -90 10k 20k 0 0.5 Figure 21. Common Mode Rejection Ratio vs Frequency 40 Phase 1.5 2 2.5 3 3.5 100 150 90 90 0 60 120 Gain -10 30 -20 0 -30 -30 -40 90 60 Gain 50 Gain − dB 10 -50 VDD = 5 V RL = 8 Ω AV = 1 -80 10 100 1 k 10 k 100 k f - Frequency - Hz 1M 60 40 30 30 0 20 −30 10 -60 1 5 150 70 -70 4.5 180 VDD = 5 V, RL = 8 Ω 80 120 -60 4 Figure 22. Common-Mode Rejection Ratio vs CommonMode Input Voltage 180 Phase - Degrees Gain - dB 20 Phase −60 -90 0 −10 -120 −20 −120 -150 -180 −30 −150 10 M Figure 23. Closed Loop Gain/Phase vs Frequency 10 1 VIC - Common Mode Input Voltage - V f - Frequency - Hz 30 VDD = 5 V VDD = 3.5 V -70 -100 20 2000 Phase − Degrees -50 1600 0 RL = 4 Ω,, VIC = 200 mV Vp-p, Gain = 1 V/V, -10 800 1200 f − Frequency − Hz Figure 20. GSM Power Supply Rejection vs Frequency CMRR - Common Mode Rejection Ratio - dB CMRR - Common-Mode Rejection Ratio - dB +0 −150 −120 −180 0 2 ms/div Ch1 100 mV/div Ch4 10 mV/div VO − Output Voltage − dBV Voltage − V C1 Frequency 217 Hz C1 − Duty 20% C1 Pk−Pk 500 mV VDD − Supply Voltage − dBV SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 −40 100 −90 1k 10 k 100 k f − Frequency − Hz −180 1M Figure 24. Open Loop Gain/Phase vs Frequency Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 5 VDD = 5 V VDD = 5 V 1 4 I DD - Supply Current - mA I DD - Supply Current - mA 4.5 10 TA = 125°C TA = 25°C 3.5 3 TA = -40°C 2.5 2 1.5 1 VDD = 3.6 V 0.1 VDD = 2.5 V 0.01 0.001 0.0001 0.5 0 0 0.5 1 1.5 2 2.5 3 3.5 4 VDD - Supply Voltage - V 4.5 5 5.5 Figure 25. Supply Current vs Supply Voltage 0.00001 0 1 2 3 4 5 Voltage on SHUTDOWN Terminal - V Figure 26. Supply Current vs Shutdown Voltage 300 Start-Up Time - ms 250 200 150 100 50 0 0 0.2 0.4 0.6 0.8 C(Bypass) - Bypass Capacitor - µF 1 Figure 27. Start-Up Time vs Bypass Capacitor 8 Parameter Measurement Information All parameters are measured according to the conditions described in Specifications section. Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 11 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 9 Detailed Description 9.1 Overview The TPA6211A1 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier 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 feedback ensures that the common-mode voltage at the output is biased around VDD/2 regardless of the common- mode voltage at the input. 9.2 Functional Block Diagram VDD 40 NŸ IN+ + Vo+ IN- _ Vo- 40 NŸ GND BYPASS Bias Circuitry SHUTDOWN 100 NŸ 9.3 Feature Description 9.3.1 Fully Differential Amplifier Efficiency and Thermal Information Class-AB amplifiers are inefficient, primarily because of voltage drop across the output-stage transistors. The two components of this internal voltage drop are the headroom or dc voltage drop that varies inversely to output power, and the sinewave nature of the output. The total voltage drop can be calculated by subtracting the RMS value of the output voltage from VDD. The internal voltage drop multiplied by the average value of the supply current, IDD(avg), determines the internal power dissipation of the amplifier. An easy-to-use equation to calculate efficiency starts out as being equal to the ratio of power from the power supply to the power delivered to the load. To accurately calculate the RMS and average values of power in the load and in the amplifier, the current and voltage waveform shapes must first be understood (see Figure 28). 12 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 Feature Description (continued) VO V(LRMS) IDD IDD(avg) Figure 28. Voltage and Current Waveforms for BTL Amplifiers Although the voltages and currents for SE and BTL are sinusoidal in the load, currents from the supply are different between SE and BTL configurations. In an SE application the current waveform is a half-wave rectified shape, whereas in BTL it is a full-wave rectified waveform. This means RMS conversion factors are different. Keep in mind that for most of the waveform both the push and pull transistors are not on at the same time, which supports the fact that each amplifier in the BTL device only draws current from the supply for half the waveform. The following equations are the basis for calculating amplifier efficiency. These definitions are true for the following equations: • ηBTL = Efficiency of a BTL amplifier • PL = Power delivered to load • PSUP = Power drawn from power supply • VLRMS = RMS voltage on BTL load • VP = Peak voltage on BTL load • VDD = Power supply voltage • IDDavg = Average current drawn from the power supply Use Equation 1 to calculate the efficiency of a BTL amplifier. PL KBTL PSUP where • VLRMS2 RL PL where – VP VLRMS 2 therefore – • VP2 2RL PL PSUP VDDIDDavg where – 1 S IDDavg S V ³0 RPL sin(t)dt 1 VP u >cos(t)@0S S RL 2VP SRL therefore – PSUP 2VDD VP SRL (1) Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 13 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com Feature Description (continued) Using these values, substitute PL and PSUP from Equation 1 as shown in Equation 2. VP2 2RL 2VDD VP SRL KBTL SVP 4VDD where • VP 2PLRL (2) Therefore, ηBTL can be calculated using Equation 3. hBTL = p 2PLRL 4VDD (3) Table 2. Efficiency and Maximum Ambient Temperature vs Output Power OUTPUT POWER (W) EFFICIENCY (%) INTERNAL DISSIPATION (W) POWER FROM SUPPLY (W) MAX AMBIENT TEMPERATURE (°C) 0.5 27.2 1.34 1.84 85 (2) (1) 5-V, 3-Ω Systems 1 38.4 1.6 2.6 76 2.45 60.2 1.62 4.07 75 3.1 67.7 1.48 4.58 82 0.5 31.4 1.09 1.59 85 (2) 1 44.4 1.25 2.25 85 (2) 2 62.8 1.18 3.18 85 (2) 2.8 74.3 0.97 3.77 85 (2) 0.5 44.4 0.625 1.13 85 (2) 1 62.8 0.592 1.6 85 (2) 1.36 73.3 0.496 1.86 85 (2) 1.7 81.9 0.375 2.08 85 (2) 5-V, 4-Ω BTL Systems 5-V, 8-Ω Systems (1) (2) DRB package Package limited to 85°C ambient Table 2 uses Equation 3 to calculate efficiencies for four different output power levels. Note that the efficiency of the amplifier is quite low for lower power levels and rises sharply as power to the load is increased resulting in a nearly flat internal power dissipation over the normal operating range. Note that the internal dissipation at full output power is less than in the half power range. Calculating the efficiency for a specific system is the key to proper power supply design. For a 2.8-W audio system with 4-Ω loads and a 5-V supply, the maximum draw on the power supply is almost 3.8 W. A final point to remember about Class-AB amplifiers is how to manipulate the terms in the efficiency equation to the utmost advantage when possible. Note that in Equation 3, VDD is in the denominator. This indicates that as VDD goes down, efficiency goes up. Use Equation 4 as a simple formula for calculating the maximum power dissipated, PDmax, for a differential output application. PDmax 2 2VDD S2RL where 14 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 • PDmax for a 5-V, 4-Ω system is 1.27 W. (4) The maximum ambient temperature depends on the heat sinking ability of the PCB system. The derating factor for the 3 mm ×3 mm DRB package is shown in the dissipation rating table. Converting this to θJA: 1 1 TJA 45.9qC / W Derating Factor 0.0218 (5) Given θJA, the maximum allowable junction temperature, and the maximum internal dissipation, the maximum ambient temperature can be calculated with Equation 6. The maximum recommended junction temperature for the TPA6211A1 is 150°C. TAMax TJMax TJAPDmax 150 45.9(1.27) 91.7qC (6) Equation 6 shows that the maximum ambient temperature is 91.7°C (package limited to 85°C ambient) at maximum power dissipation with a 5-V supply. Table 2 shows that for most applications no airflow is required to keep junction temperatures in the specified range. The TPA6211A1 is designed with thermal protection that turns the device off when the junction temperature surpasses 150°C to prevent damage to the IC. In addition, using speakers with an impedance higher than 4-Ω dramatically increases the thermal performance by reducing the output current. 9.3.1.1 Advantages of Fully Differential Amplifiers • Input coupling capacitors not required: A fully differential amplifier with good CMRR, like the TPA6211A1, allows the inputs to be biased at voltage other than mid-supply. For example, if a DAC has a lower midsupply voltage than that of the TPA6211A1, the common-mode feedback circuit compensates, and the outputs are still biased at the mid-supply point of the TPA6211A1. The inputs of the TPA6211A1 can be biased from 0.5 V to VDD - 0.8 V. If the inputs are biased outside of that range, input coupling capacitors are required. • Mid-supply bypass capacitor, C(BYPASS), not required: The fully differential amplifier does not require a bypass capacitor. Any shift in the mid-supply voltage affects both positive and negative channels equally, thus canceling at the differential output. Removing the bypass capacitor slightly worsens power supply rejection ratio (kSVR), but a slight decrease of kSVR may be acceptable when an additional component can be eliminated (See Figure 17). • Better RF-immunity: GSM handsets save power by turning on and shutting 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 much better than the typical audio amplifier. • Figure 31 through Figure 38 show application schematics for differential and single-ended inputs. 9.3.1.2 Differential Output Versus Single-Ended Output Figure 29 shows a Class-AB audio power amplifier (APA) in a fully differential configuration. The TPA6211A1 amplifier has differential outputs driving both ends of the load. One of several potential benefits to this configuration is power to the load. The differential drive to the speaker means that as one side is slewing up, the other side is slewing down, and vice versa. This in effect doubles the voltage swing on the load as compared to a ground-referenced load. Plugging 2 × VO(PP) into the power equation, where voltage is squared, yields 4× the output power from the same supply rail and load impedance Equation 7. VO(PP) V(rms) 2 2 Power V(rms)2 RL (7) Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 15 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com VDD VO(PP) RL 2x VO(PP) VDD -VO(PP) Figure 29. Differential Output Configuration In a typical wireless handset operating at 3.6 V, bridging raises the power into an 8-Ω speaker from a singledended (SE, ground reference) limit of 200 mW to 800 mW. This is a 6-dB improvement in sound power—loudness that can be heard. In addition to increased power, there are frequency-response concerns. Consider the single-supply SE configuration shown in Figure 30. A coupling capacitor (CC) is required to block the dc-offset voltage from the load. This capacitor can be quite large (approximately 33 μF to 1000 μF) so it tends to be expensive, heavy, occupy valuable PCB area, and have the additional drawback of limiting lowfrequency performance. This frequency-limiting effect is due to the high-pass filter network created with the speaker impedance and the coupling capacitance. This is calculated with Equation 8. 1 fc 2SRL CC (8) For example, a 68-μF capacitor with an 8-Ω speaker would attenuate low frequencies below 293 Hz. The BTL configuration cancels the dc offsets, which eliminates the need for the blocking capacitors. Low-frequency performance is then limited only by the input network and speaker response. Cost and PCB space are also minimized by eliminating the bulky coupling capacitor. VDD VO(PP) CC RL VO(PP) -3 dB fc Figure 30. Single-Ended Output and Frequency Response Increasing power to the load does carry a penalty of increased internal power dissipation. The increased dissipation is understandable considering that the BTL configuration produces 4× the output power of the SE configuration. 16 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 9.4 Device Functional Modes 9.4.1 Shutdown Mode The TPA6211A1 device can be put in shutdown mode when asserting SHUTDOWN pin to a logic LOW. While in shutdown mode, the device output stage is turned off and set into high impedance, making the current consumption very low. The device exits shutdown mode when a HIGH logic level is applied to SHUTDOWN pin. Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 17 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 10 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 10.1 Application Information The TPA6211A1 is a fully-differential amplifier designed to drive a speaker with at least 3-Ω impedance while consuming only 20 mm2 total printed circuit board (PCB) area in most applications. 10.2 Typical Application Figure 31 shows a typical application circuit for the TPA6211A1 with a speaker, input resistors and supporting power supply decoupling capacitors. VDD 6 To Battery Cs 40 kΩ In From DAC − RI 4 IN− + RI 3 IN+ _ VO− 8 + 40 kΩ 1 SHUTDOWN C(BYPASS)(1) 2 (1) VO+ 5 GND 7 Bias Circuitry 100 kΩ C(BYPASS) is optional Figure 31. Typical Differential Input Application Schematic Typical values are shown in Table 3. Table 3. Typical Component Values COMPONENT (1) 18 VALUE RI 40 kΩ C(BYPASS) (1) 0.22 μF CS 1 μF CI 0.22 μF C(BYPASS) is optional. Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 10.2.1 Design Requirements For this design example, use the parameters listed in Table 4. Table 4. Design Parameters DESIGN PARAMETER EXAMPLE VALUE Power supply 2.5 V to 5.5 V Current 4 mA to 5 mA High > 1.55 V Shutdown Low < 0.5 V 3 Ω, 4 Ω, or 8 Ω Speaker 10.2.2 Detailed Design Procedure 10.2.2.1 Selecting Components 10.2.2.1.1 Resistors (RI) The input resistor (RI) can be selected to set the gain of the amplifier according to Equation 9. RF Gain RI (9) The internal feedback resistors (RF) are trimmed to 40 kΩ. Resistor matching is very important in fully differential amplifiers. The balance of the output on the reference voltage depends on matched ratios of the resistors. CMRR, PSRR, and the cancellation of the second harmonic distortion diminishes if resistor mismatch occurs. Therefore, 1%-tolerance resistors or better are recommended to optimize performance. 10.2.2.1.2 Bypass Capacitor (CBYPASS) and Start-Up Time The internal voltage divider at the BYPASS pin of this device sets a mid-supply voltage for internal references and sets the output common mode voltage to VDD/2. Adding a capacitor filters any noise into this pin, increasing kSVR. C(BYPASS)also determines the rise time of VO+ and VO- when the device exits shutdown. The larger the capacitor, the slower the rise time. 10.2.2.1.3 Input Capacitor (CI) The TPA6211A1 does not require input coupling capacitors when driven by a differential input source biased from 0.5 V to VDD - 0.8 V. Use 1% tolerance or better gain-setting resistors if not using input coupling capacitors. In the single-ended input application, an input capacitor, CI, is required to allow the amplifier to bias the input signal to the proper dc level. In this case, CI and RI form a high-pass filter with the corner frequency defined in Equation 10. 1 fc 2SRICI (10) -3 dB fc Figure 32. Input Filter Cutoff Frequency Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 19 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com The value of CI is an important consideration. It directly affects the bass (low frequency) performance of the circuit. Consider the example where RI is 10 kΩ and the specification calls for a flat bass response down to 100 Hz. Equation 10 is reconfigured as Equation 11. 1 CI 2SRIfc (11) In this example, CI is 0.16 μF, so the likely choice ranges from 0.22 μF to 0.47 μF. Ceramic capacitors are preferred because they are the best choice in preventing leakage current. When polarized capacitors are used, the positive side of the capacitor faces the amplifier input in most applications. The input dc level is held at VDD/2, typically higher than the source dc level. It is important to confirm the capacitor polarity in the application. 10.2.2.1.4 Band-Pass Filter (Ra, Ca, and Ca) It may be desirable to have signal filtering beyond the one-pole high-pass filter formed by the combination of CI and RI. A low-pass filter may be added by placing a capacitor (CF) between the inputs and outputs, forming a band-pass filter. An example of when this technique might be used would be in an application where the desirable pass-band range is between 100 Hz and 10 kHz, with a gain of 4 V/V. The following equations illustrate how the proper values of CF and CI can be determined. 10.2.2.1.4.1 Step 1: Low-Pass Filter fc(LPF) 1 2SRFCF where • RF is the internal 40 kΩ resistor (12) 1 2S 40k: CF (13) 1 2S40 k: fc(LPF) (14) fc(LPF) Therefore, CF Substitute fc(LPF) with 10 kHz and solve for CF: CF = 398 pF 10.2.2.1.4.2 Step 2: High-Pass Filter fc(HPF) 1 2SRICI where • R| is the input resistor (15) Because the application in this case requires a gain of 4 V/V, RI must be set to 10 kΩ. Substitute RI in Equation 15 with 10 kΩ as shown in Equation 16. 1 fc(HPF) 2S10 k: CI (16) Therefore, CI 1 2S10 k: fc(HPF) (17) Substitute fc(HPF) with 100 Hz and solve for CI: CI = 0.16 μF At this point, a first-order band-pass filter has been created with the low-frequency cutoff set to 100 Hz and the high-frequency cutoff set to 10 kHz. 20 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 The process can be taken a step further by creating a second-order high-pass filter. This is accomplished by placing a resistor (Ra) and capacitor (Ca) in the input path. It is important to note that Ra must be at least 10 times smaller than RI; otherwise its value has a noticeable effect on the gain, as Ra and RI are in series. 10.2.2.1.4.3 Step 3: Additional Low-Pass Filter Ra must be at least 10x smaller than RI, Set Ra = 1 kΩ, 1 fc(LPF) 2SRaCa (18) Therefore, Ca 1 2S 1k: fc(LPF) (19) Substitute fc(LPF) with 10 kHz and solving for Ca: Ca = 160 pF Figure 33 is a bode plot for the band-pass filter in the previous example. Figure 38 shows how to configure the TPA6211A1 as a band-pass filter. AV 12 dB 9 dB −20 dB/dec +20 dB/dec −40 dB/dec fc(HPF) = 100 Hz fc(LPF) = 10 kHz f Figure 33. Bode Plot 10.2.2.1.5 Decoupling Capacitor (CS) The TPA6211A1 is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to ensure the output total harmonic distortion (THD) is as low as possible. Power-supply decoupling also prevents oscillations for long lead lengths between the amplifier and the speaker. For higher frequency transients, spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) ceramic capacitor, typically 0.1 μF to 1 μF, placed as close as possible to the device VDD lead works best. For filtering lower frequency noise signals, a 10-μF or greater capacitor placed near the audio power amplifier also helps, but is not required in most applications because of the high PSRR of this device. 10.2.2.1.6 Using Low-ESR Capacitors Low-ESR capacitors are recommended throughout this application section. A real (as opposed to ideal) capacitor can be modeled simply as a resistor in series with an ideal capacitor. The voltage drop across this resistor minimizes the beneficial effects of the capacitor in the circuit. The lower the equivalent value of this resistance the more the real capacitor behaves like an ideal capacitor. Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 21 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 10.2.3 Application Curves 3.5 3 3.5 f = 1 kHz Gain = 1 V/V 3 VDD = 5 V, THD 1% PO = 3 Ω, THD 1% PO - Output Power - W PO - Output Power - W PO = 4 Ω, THD 10% 2.5 PO = 4 Ω, THD 1% 2 1.5 PO = 8 Ω, THD 10% PO = 8 Ω, THD 1% 1 0.5 0 2.5 f = 1 kHz Gain = 1 V/V VDD = 5 V, THD 10% PO = 3 Ω, THD 10% 2.5 VDD = 3.6 V, THD 10% 2 VDD = 3.6 V, THD 1% 1.5 VDD = 2.5 V, THD 10% VDD = 2.5 V, THD 1% 1 0.5 0 3 3.5 4 VDD - Supply Voltage - V 4.5 3 5 8 13 18 23 28 RL - Load Resistance - Ω Figure 34. Output Power vs Supply Voltage Figure 35. Output Power vs Load Resistance 10.3 System Examples VDD 6 CI − 4 IN− + RI 3 IN+ CI 40 kΩ 1 SHUTDOWN C(BYPASS)(1) (1) Cs 40 kΩ RI To Battery _ VO+ 5 VO− 8 + GND 7 Bias Circuitry 100 kΩ 2 C(BYPASS) is optional Figure 36. Differential Input Application Schematic Optimized With Input Capacitors 22 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 System Examples (continued) VDD 6 IN RI 4 IN− RI 3 IN+ CI _ VO+ 5 VO− 8 + 40 kΩ GND 7 1 SHUTDOWN C(BYPASS)(1) (1) Cs 40 kΩ CI To Battery Bias Circuitry 100 kΩ 2 C(BYPASS) is optional Figure 37. Single-Ended Input Application Schematic CF CF VDD 6 Ra − Ca Ra RI 4 IN− RI 3 IN+ CI + _ SHUTDOWN C(BYPASS)(1) VO+ 5 VO− 8 + 40 kΩ Ca (1) Cs 40 kΩ CI To Battery 1 GND 7 Bias Circuitry 100 kΩ 2 C(BYPASS) is optional Figure 38. Differential Input Application Schematic With Input Bandpass Filter Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 23 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 11 Power Supply Recommendations The TPA6211A1 device is designed to operate from an input voltage supply range between 2.5 V and 5.5 V. Therefore, the output voltage range of power supply must be within this range and well regulated. The current capability of upper power should not exceed the maximum current limit of the power switch. 11.1 Power Supply Decoupling Capacitor The TPA6211A1 device requires adequate power supply decoupling to ensure a high efficiency operation with low total harmonic distortion (THD). Place a low equivalent series resistance (ESR) ceramic capacitor, typically 0.1 uF, as close as possible of the VDD pin. This choice of capacitor and placement helps with higher frequency transients, spikes, or digital hash on the line. Also is recommended to place a 2.2-µF to 10-µF capacitor on the VDD supply trace. This larger capacitor acts as a charge reservoir, providing energy faster than the board supply, thus helping to prevent any droop in the supply voltage. 12 Layout 12.1 Layout Guidelines Place all the external components close to the TPA6211A1 device. The input resistors need to be close to the device input pins so noise does not couple on the high impedance nodes between the input resistors and the input amplifier of the device. Placing the decoupling capacitors, CS and C(BYPASS), close to the TPA6211A1 device is important for the efficiency of the amplifier. Any resistance or inductance in the trace between the device and the capacitor can cause a loss in efficiency. 12.2 Layout Examples Bypass capacitor placed as close as possible to the device SHUTDOWN Decoupling capacitor placed as close as possible to the device 1 8 2 7 OUT - 0.22 µF 1 µF IN + 3 6 IN - 4 5 OUT + TPA6211A1 Input Resistors placed as close as possible to the device Top Layer Ground Plane Top Layer Traces Pad to Top Layer Ground Plane Thermal Pad Via to Bottom Ground Plane Via to Power Supply Figure 39. TPA6211A1 8-Pin SON (DRB) Board Layout 24 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 TPA6211A1 www.ti.com SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 Layout Examples (continued) Bypass capacitor placed as close as possible to the device SHUTDOWN Decoupling capacitor placed as close as possible to the device 1 8 2 7 OUT - 0.22 µF 1 µF IN + 3 6 IN - 4 5 OUT + TPA6211A1 Input Resistors placed as close as possible to the device Top Layer Ground Plane Top Layer Traces Pad to Top Layer Ground Plane Thermal Pad Via to Bottom Ground Plane Via to Power Supply Figure 40. TPA6211A1 8-Pin MSOP-PowerPAD™ (DGN) Board Layout Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 25 TPA6211A1 SLOS367E – AUGUST 2003 – REVISED NOVEMBER 2015 www.ti.com 13 Device and Documentation Support 13.1 Device Support 13.1.1 Development Support For the TPA6211A1 TINA-TI Spice Model, see SBOM819. For the TPA6211A1 TINA-TI Reference Design, see SBOM820. For the TPA6211A1EVM Gerber files, see SLOC009. For the Speaker Amplifier Class AB/Class D Parametric Table, go to www.ti.com/lsds/ti/audio-ic/speakeramplifier-class-ab-class-d-product.page 13.2 Documentation Support 13.2.1 Related Documentation For related documentation, see the following: TPA6211A1EVM User's Guide, TPA6211A1 Audio Power Amplifier Evaluation Module, SLOU162 13.3 Community Resources The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of Use. TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help solve problems with fellow engineers. Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and contact information for technical support. 13.4 Trademarks PowerPAD, E2E are trademarks of Texas Instruments. All other trademarks are the property of their respective owners. 13.5 Electrostatic Discharge Caution 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. 13.6 Glossary SLYZ022 — TI Glossary. This glossary lists and explains terms, acronyms, and definitions. 14 Mechanical, Packaging, and Orderable Information The following pages include mechanical, packaging, and orderable information. This information is the most current data available for the designated devices. This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. 26 Submit Documentation Feedback Copyright © 2003–2015, Texas Instruments Incorporated Product Folder Links: TPA6211A1 PACKAGE OPTION ADDENDUM www.ti.com 19-Oct-2022 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Pins Package Drawing Qty Eco Plan (2) Lead finish/ Ball material MSL Peak Temp Op Temp (°C) Device Marking (3) Samples (4/5) (6) TPA6211A1DGN ACTIVE HVSSOP DGN 8 80 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 AYK Samples TPA6211A1DGNG4 ACTIVE HVSSOP DGN 8 80 RoHS & Green Level-1-260C-UNLIM -40 to 85 AYK Samples TPA6211A1DGNR ACTIVE HVSSOP DGN 8 2500 RoHS & Green NIPDAU | NIPDAUAG Level-1-260C-UNLIM -40 to 85 AYK Samples TPA6211A1DGNRG4 ACTIVE HVSSOP DGN 8 2500 RoHS & Green NIPDAU Level-1-260C-UNLIM -40 to 85 AYK Samples TPA6211A1DRB ACTIVE SON DRB 8 121 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 AYN Samples TPA6211A1DRBR ACTIVE SON DRB 8 3000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 AYN Samples TPA6211A1DRBRG4 ACTIVE SON DRB 8 3000 RoHS & Green NIPDAU Level-2-260C-1 YEAR -40 to 85 AYN Samples NIPDAU (1) 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) RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may reference these types of products as "Pb-Free". RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption. Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of
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TPA6211A1DRB
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