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TPA112 MSOP

Audio Power Amplifier

Evaluation Module

2001

Mixed-Signal Products

User’s Guide

SLOU023A

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Summary of Contents for SLOU023A

Page 1: ...TPA112 MSOP Audio Power Amplifier Evaluation Module 2001 Mixed Signal Products User s Guide SLOU023A...

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: ...is 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 devi...

Page 4: ...iv...

Page 5: ...Precautions 3 2 3 2 The TPA112 MSOP Audio Amplifier Evaluation Module 3 3 3 2 1 TPA112 Audio Amplifier IC 3 4 3 2 2 Module Gain 3 5 3 3 Using The TPA112 MSOP EVM With The Plug N Play Evaluation Platf...

Page 6: ...PA112 MSOP EVM 3 3 3 3 TPA112 MSOP EVM Schematic Diagram 3 3 3 4 TPA112 Audio Amplifier IC 3 4 3 5 Platform Signal Routing and Outputs 3 7 3 6 Typical Headphone Plug 3 9 3 7 TPA112 MSOP EVM Connected...

Page 7: ...TPA112 MSOP audio amplifier evaluation module SLOP126 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 8: ...TI Plug N Play Audio Amplifier Evaluation Platform J Evaluation module is designed to simply plug into the platform automatically making all signal control and power connections J Platform provides f...

Page 9: ...the module circuit board to allow the EVM to either be plugged into the TI plug n play audio amplifier evaluation platform or to be wired directly into existing circuits and equipment when used stand...

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

Page 11: ...by making connections directly to the module pins and can be wired directly into existing circuits or equipment The platform switch and jumper settings shown in Table 2 1 are typical for the TPA112 MS...

Page 12: ...rm 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...

Page 13: ...U1 set S2 to OFF when no signal conditioning board is installed Power supply 5 Select and connect the power supply a Connect an external regulated power supply set to a voltage between 2 5 V and 5 5...

Page 14: ...ll external power sources are set to OFF 2 Connect an external regulated power supply set to 5 V to the module VDD and GND pins taking care to observe marked polarity Inputs and outputs 3 Ensure that...

Page 15: ...ormation and a parts list for the TPA112 MSOP evaluation module Topic Page 3 1 Precautions 3 2 3 2 The TPA112 MSOP Audio Power Amplifier Evaluation Module 3 3 3 3 Using The TPA112 MSOP EVM With The Pl...

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: ...es 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 protot...

Page 18: ...audio band 20 Hz to 20 kHz As a headphone driver distortion levels are below 1 into 32 loads across the audio band And as a speaker driver distortion levels are below 2 into 8 loads across the audio b...

Page 19: ...nd noise performance at lower gain levels In addition higher gain levels require a small compensation capacitor to ensure stability see the TPA112 data sheet Gain versus total harmonic distortion THD...

Page 20: ...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 pins 3...

Page 21: ...ignal applied directly to the inputs of the TPA112 power amplifiers Switch S2 selects or bypasses signal conditioning 3 3 2 2 Headphone Output Jack Switch S3 is the source select for the stereo headph...

Page 22: ...m is equipped with overvoltage and reverse polarity supply voltage input protection in the form of fused crowbar circuits VDD voltage applied to platform screw terminals J6 MUST NOT exceed the absolut...

Page 23: ...jack J10 Amplified audio output signals from the power amplifiers U2 U4 leave the platform through left and right RCA phono jacks J7 and J9 left and right pairs of compression connectors for stripped...

Page 24: ...t exists 3 4 1 TPA112 MSOP EVM Connected as a Stereo Headphone Amplifier Figure 3 7 TPA112 MSOP EVM Connected as a Stereo Headphone Amplifier 33 F 1000 F 33 F 1000 F 5 VDC Audio Input Right Audio Inpu...

Page 25: ...1 C2 C4 C7 Capacitor 0 1 F 80 20 nonpolarized SMD 0603 4 Murata GRM39 Y5V104Z10PT Newark R1 R9 R4 R7 Resistor 20 k 1 16 W 5 SMD 0603 6 Panasonic ERJ 3GSYJ203 Digi Key P20KGCT ND R2 R3 R8 R10 Resistor...

Page 26: ...3 12 Details...

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