Texas Instruments TPA311 Скачать руководство пользователя страница 1

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2001

Mixed-Signal Products

TPA311

Audio Power Amplifier

Evaluation Module

User’s Guide

SLOU013A

Содержание TPA311

Страница 1: ...2001 Mixed Signal Products TPA311 Audio Power Amplifier Evaluation Module User s Guide SLOU013A...

Страница 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...

Страница 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...

Страница 4: ...iv...

Страница 5: ...Module 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 EVM With The Plug N Play Evaluati...

Страница 6: ...Schematic 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 EVM Connected for...

Страница 7: ...TPA311 audio amplifier evaluation module SLOP116 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...

Страница 8: ...luation 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 select p...

Страница 9: ...be wired directly into existing circuits and equipment when used stand alone The platform has room for a pair of TPA311 evaluation modules and is a convenient vehicle for demonstrating TI s audio pow...

Страница 10: ...1 4 Introduction...

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

Страница 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...

Страница 13: ...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 supply 7 Select and connect the...

Страница 14: ...Ensure that all 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...

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

Страница 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...

Страница 17: ...the module to be plugged into the TI platform which automatically makes all the signal input and output power and control connections to the module The module connection pins are on 0 1 inch centers t...

Страница 18: ...e 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 outpu...

Страница 19: ...st 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 distortion than most low cost speakers Gain ver...

Страница 20: ...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 3 1 1...

Страница 21: ...r the 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 W...

Страница 22: ...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 single end...

Страница 23: ...in jumper 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 t...

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

Страница 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...

Страница 26: ...ugh current to overcome the pulldown resistors on the modules 20 k 20 k for two EVMs 3 4 1 TPA311 EVM Connected for BTL Output Figure 3 8 TPA311 EVM Connected for Stereo BTL Output 5 VDC Audio Input R...

Страница 27: ...Output 5 VDC Audio Input Right 5 VDC Audio Input Left External Mute Control active high GND 33 F 1000 F 33 F 1000 F C4 R3 IN C2 Shutdown R1 R2 C1 C5 C3 OUT GND OUT GND S1 GND VDD R4 EVM Literature SL...

Страница 28: ...A 1 Panasonic ECS TOJY106R Digi Key PCS1106CT ND C1 Capacitor 1 F 80 20 nonpolarized 1206 1 Murata GRM42 6Y5V105Z16BL Newark 93F2254 C2 C3 Capacitor 2 2 F 20 nonpolarized 1206 2 TDK C3216X5R1A225 C4...