2001
Mixed-Signal Products
TPA311
Audio Power Amplifier
Evaluation Module
User’s Guide
SLOU013A
Page 1: ...2001 Mixed Signal Products TPA311 Audio Power Amplifier Evaluation Module User s Guide SLOU013A...
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: ...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...
Page 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...
Page 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...
Page 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...
Page 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...
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 EVM and will cause the TPA311 to switch to single ended output mo...
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: ...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...
Page 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...
Page 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...
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: ...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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
Page 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...
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: ...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...
Page 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...
Page 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...
