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2001

Mixed-Signal Products

TPA311 MSOP

Audio Power Amplifier

Evaluation Module

User’s Guide

SLOU020A

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Summary of Contents for SLOU020A

Page 1: ...2001 Mixed Signal Products TPA311 MSOP Audio Power Amplifier Evaluation Module User s Guide SLOU020A...

Page 2: ...esign TI does not warrant or represent that any license either express or implied is granted under any patent right copyright mask work right or other intellectual property right of TI covering or rel...

Page 3: ...This equipment is intended for use in a laboratory test environment only It generates uses and can radiate radio frequency energy and has not been tested for compliance with the limits of computing de...

Page 4: ...iv...

Page 5: ...3 3 3 2 1 TPA311 Audio Amplifier IC 3 4 3 2 2 BTL Operation 3 4 3 2 3 Single Ended Operation 3 5 3 2 4 Module Gain 3 5 3 2 5 Shutdown 3 5 3 3 Using The TPA311 MSOP EVM With The Plug N Play Evaluation...

Page 6: ...Diagram 3 3 3 4 TPA311 Audio Amplifier IC 3 4 3 5 Platform Signal Routing and Outputs 3 7 3 6 Mute Mode and Polarity Control 3 8 3 7 Typical Headphone Plug 3 11 3 8 TPA311 MSOP EVM Connected for Ster...

Page 7: ...11 MSOP audio amplifier evaluation module SLOP123 It includes a list of EVM features a brief description of the module illustrated with a pictorial diagram and a list of EVM specifications Topic Page...

Page 8: ...Evaluation module is designed to simply plug into the platform auto matically making all signal control and power connections J Platform provides flexible power options J Jumpers on the platform sele...

Page 9: ...ugged into the TI plug n play audio amplifier evaluation platform or to be wired directly into existing circuits and equipment when used stand alone The platform has room for a pair of TPA311 MSOP eva...

Page 10: ...1 4 Introduction...

Page 11: ...red directly into existing circuits or equipment The platform switch and jumper settings shown in Table 2 1 are typical for the TPA311 MSOP EVM and will cause the TPA311 IC to switch to single ended o...

Page 12: ...or both may result Figure 2 1 Quick Start Platform Map 3 Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC DC J2 VCC J1 D1 D2 D3 D4 J2...

Page 13: ...VM JP6 JP7 JP8 S2 S3 TPA311 Mode X Hi Note 2 X Notes 1 X Don t care 2 Set S2 to ON when signal conditioning board is installed in U1 set S2 to OFF when no signal conditioning board is installed Power...

Page 14: ...e standard part number TPA311 is replaced with the code TIAAB Power supply 1 Ensure that all external power sources are set to OFF 2 Connect an external regulated power supply set to 5 V to the module...

Page 15: ...ion and a parts list for the TPA311 MSOP evaluation module Topic Page 3 1 Precautions 3 2 3 2 The TPA311 MSOP Audio Power Amplifier Evaluation Module 3 3 3 3 Using The TPA311 MSOP EVM With The Plug N...

Page 16: ...or both may result Figure 3 1 The TI Plug N Play Audio Amplifier Evaluation Platform Signal Conditioning CAUTION Do not insert or remove EVM boards with power applied ICC JP4 F1 VR1 R1 JP3 JP2 JP1 AC...

Page 17: ...akes all the signal input and output power and control connections to the module The module connection pins are on 0 1 inch centers to allow easy use with standard perf board and plug board based prot...

Page 18: ...ase with each other for increased power The speaker load is connected directly across VO and VO and neither line is connected to ground BTL operation provides many benefits including quadruple the out...

Page 19: ...s most other amplifiers exhibits its best distortion and noise performance at lower gain levels see the TPA311 data sheet Even so the TPA311 at its highest gain setting has significantly less distorti...

Page 20: ...with the proper orientation Evaluation modules are easily removed from the platform by simply prying them up and lifting them out of their sockets Care must be taken however to prevent bending the pi...

Page 21: ...he signal from the headphone amplifier in socket U5 or the signal from the TPA311 power amplifiers installed in sockets U3 and U4 as determined by the setting of headphone source select switch S3 When...

Page 22: ...d BTL output mode and the single ended output mode When the mode control input is tied to GND the module operates in the BTL output mode When this input is tied to VDD the module operates in the singl...

Page 23: ...mper header JP8 on the platform selects the control signal polarity by connecting either the active high or the active low line from the headphone jack to jumper JP6 When JP6 is set to mute use the fo...

Page 24: ...n be used to supply VDD voltage to the platform and the TPA311 MSOP evaluation modules installed on it The platform is equipped with overvoltage and reverse polarity supply voltage input protection in...

Page 25: ...eft and right pairs of compression connectors for stripped speaker wires J8 and optionally through a miniature 1 8 stereo phone jack J10 for headphones The audio output lines from the power amplifiers...

Page 26: ...modules 20 k 20 k for two EVMs 3 4 1 TPA311 MSOP EVM Connected for BTL Output Figure 3 8 TPA311 MSOP EVM Connected for Stereo BTL Output 5 VDC Audio Input Right 5 VDC Audio Input Left External Mute Co...

Page 27: ...Right 5 VDC Audio Input Left External Mute Control active high GND OUT IN GND Vdd GND U1 R2 Shutdown R3 OUT GND C5 TEXAS INSTRUMENTS SLOP123 TPA311 MSOP EVM C4 C1 C2 R4 SE BTL C3 S1 R1 OUT IN GND Vdd...

Page 28: ...Capacitor 5 pF 0603 1 Panasonic ECU V1H050CCV Digi Key PCC050CVCT ND R1 R2 R4 Resistor 20 k 1 16 W 5 0603 3 Panasonic ERJ 3GSYJ203 Digi Key P20KGCT ND R3 Resistor 39 k 1 16 W 5 0603 1 Panasonic ERJ 3G...

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