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TPA0103

Audio Power Amplifier

Evaluation Module

August 1998

Mixed-Signal Products

User’s Guide

SLOU015

Summary of Contents for TPA0103

Page 1: ...TPA0103 Audio Power Amplifier Evaluation Module August 1998 Mixed Signal Products User s Guide SLOU015...

Page 2: ...ONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF DEATH PERSONAL INJURY OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE CRITICAL APPLICATIONS TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED AUTHORIZED OR WARRANT...

Page 3: ...circuit FCC Warning 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 li...

Page 4: ...iv...

Page 5: ...3 3 2 1 TPA0103 Audio Amplifier IC 3 4 3 2 2 Output Modes 3 5 3 2 3 Inputs and Gain 3 6 3 3 Using The TPA0103 EVM With The Plug N Play Evaluation Platform 3 7 3 3 1 Installing and Removing EVM Boards...

Page 6: ...15 3 9 TPA0103 EVM Connected for Center Channel BTL Output 3 16 3 10 TPA0103 EVM Connected for Stereo Headphones Output 3 17 Tables 2 1 Typical TI Plug N Play Platform Jumper and Switch Settings for...

Page 7: ...TPA0103 Audio Amplifier Evaluation Module SLOP103 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: ...1 2 Introduction...

Page 9: ...aluation Platform J 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 o...

Page 10: ...d directly into existing circuits and equipment when used stand alone The platform has room for a single TPA0103 evaluation module and is a convenient vehicle for demonstrating TI s audio power amplif...

Page 11: ...d the TPA0103 EVM jumper settings shown in Table 2 2 are typical for the TPA0103 EVM Table 2 1 Typical TI Plug N Play Platform Jumper and Switch Settings for the TPA0103 OUTPUT MODE JP6 JP7 JP8 S2 S3...

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: ...et S2 to ON when signal conditioning board is installed in U1 set S2 to OFF when no signal conditioning board is installed 5 Set the jumpers on the TPA0103 EVM as indicated in Table 2 4 Table 2 4 TPA0...

Page 14: ...urces 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 TPA0103 EVM jumpers Setting the EVM for Center or L R...

Page 15: ...on information and a parts list for the TPA0103 evaluation module Topic Page 3 1 Precautions 3 2 3 2 The TPA0103 Audio Power Amplifier Evaluation Module 3 3 3 3 Using the TPA0103 EVM With the Plug N P...

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: ...Plug N Play Audio Amplifier Evaluation Platform Figure 3 1 or wired directly into circuits or equipment The module has single in line header connector pins mounted to the under side of the board Thes...

Page 18: ...ND R11 100 k R12 100 k TPA0103 HP L 3 2 1 TPA0103 Audio Amplifier IC The TPA0103 audio amplifier IC is a low voltage CMOS device intended primarily for desktop and notebook PCs In the typical applicat...

Page 19: ...line is connected to ground BTL operation provides many benefits including quadruple the output power of single ended operation and no need for bulky output coupling capacitors The left and right ster...

Page 20: ...eadphones are plugged in the line input gain can be set so that the two inputs provide approximately the same perceived listening level in the headphones as from the speakers An input multiplexor in t...

Page 21: ...e 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...

Page 22: ...control input pin will have no effect In addition VDD appears on that EVM control input pin Care should be taken to ensure that low impedance paths to ground are not provided through the circuitry th...

Page 23: ...rol Jumpers Two IC amplifier output mode control pins select among three output modes and mute These pins Mode A and Mode B are brought out to module pins and also have jumpers that can hardwire the I...

Page 24: ...ly via jumper S3 or connected to the amplifier IC Mode A control pin via jumper S5 so that it follows that control signal For manual control jumper S3 connects the HP L module control input pin to VDD...

Page 25: ...y coupled via 470 F electrolytics and can output either the signal from the headphone amplifier in socket U5 or the signal from the TPA0103 power amplifier installed in socket U2 as determined by the...

Page 26: ...ntrol input is tied to GND or allowed to float the 3 channel output mode is selected if S2 is set to OFF and the center channel only output mode is selected if S2 is set to ON In the typical applicati...

Page 27: ...fier module between center channel speaker and stereo headphone modes using the control signal from the platform headphone jack jumper JP6 to MODE J For center channel only or 3 channel output modes a...

Page 28: ...us full power output peak current draw can be as high as 1 5 A Any power supply connected to the platform should be capable of providing 1 5 A of current to avoid clipping the output signal during pea...

Page 29: ...ht compression connectors for stripped speaker wires J8 and through a miniature 1 8 stereo phone jack J10 for headphones The TPA0103 EVM BTL center channel audio output from amplifier IC leave the pla...

Page 30: ...ly in parallel with a second pulldown resistor 100 k 3 4 1 TPA0103 EVM Connected for Center Channel BTL Output Figure 3 9 TPA0103 EVM Connected for Center Channel BTL Output Audio Input Right Audio In...

Page 31: ...Left 5 V Mute GND ROUT HP L COUT MODE A SDWN GND COUT LOUT C1 C2 R6 GND GND LIN LHP C3 R16 C10 C9 VDD GND R9 C7 C6 RHP RIN GND GND S3 S4 S5 R11 C11 S2 MODE B R5 S1 C12 R18 R2 R1 R3 R13 R14 R4 C8 R15 R...

Page 32: ...itor 5 pF 0805 3 Panasonic ECU V1H050CCN Digi Key PCC050CNCT ND C11 Capacitor 10 F 6 3 V A 1 Panasonic ECS TOJY106R Digi Key PCS1106CT ND R1 R4 R7 R10 R15 R16 R18 Resistor 20 k 1 8 W 5 0805 11 Panason...

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