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Description

1-3

Introduction

1.2

Description

The TPA751 MSOP Audio Power Amplifier Evaluation Module is a complete,
low-power single-channel audio power amplifier. It consists of the TI TPA751
700-mW low-voltage audio power amplifier IC in a very small MSOP package,
along with a small number of other parts mounted on a circuit board that is
approximately one and a quarter inches square (see Figure 1–1).

Figure 1–1. The TI TPA751 Audio Amplifier Evaluation Module

OUT+

IN–

IN+

VDD

GND

U1 

Shutdown

R5

OUT–

GND

C4

TEXAS

INSTRUMENTS

SLOP357

TPA751  MSOP  EVM

C5

S1

R1

+

R2

C2

C1

R3
R4

C3

Due to the very small size of the MSOP IC package, the standard part number TPA751 is
replaced with the code TIATC.

Single in-line header pins are mounted to the underside of the module circuit
board. These pins allow the EVM to 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-alone.

The platform, with room for a pair of TPA751 evaluation modules, is a
convenient vehicle for demonstrating TI’s audio power amplifier and related
evaluation modules. The EVMs simply plug into the platform, which
automatically provides power to the modules, interconnects them correctly,
and connects them to a versatile array of standard audio input and output jacks
and connectors. Easy-to-use configuration controls allow the platform and
EVMs to quickly model many possible end-equipment configurations.

There is nothing to build, nothing to solder, and nothing but the speakers
included with the platform to hook up.

1.3

TPA751 EVM Specifications

Supply voltage range, V

DD

2.5 V to 5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Supply current, I

DD 

450 mA, max

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Continuous output power, P

O

: 8-

 BTL, V

DD 

= 5 V 

700 mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Audio input voltage, V

2 Vpp, max

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Minimum load impedance, R

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Summary of Contents for TPA751 MSOP

Page 1: ...February 2001 Mixed Signal Products TPA751 MSOP Audio Power Amplifier Evaluation Module User s Guide SLOU112...

Page 2: ...parameters of each device is not necessarily performed except those mandated by government requirements Customers are responsible for their applications using TI components In order to minimize risks...

Page 3: ...ntegrated 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 w...

Page 4: ...iv...

Page 5: ...2 6 2 5 1 TPA751 EVM Schematic Diagram 2 6 2 5 2 TPA751 MSOP Audio Power Amplifier Evaluation Module Parts List 2 7 2 5 4 TPA751 EVM PCB Layers 2 8 Figures 1 1 The TI TPA751 Audio Amplifier Evaluatio...

Page 6: ...vi...

Page 7: ...Audio Power Amplifier Evaluation Module SLOP357 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 1...

Page 8: ...luation module is designed to simply plug into the platform automatically making all signal control and power connections Platform provides flexible power options Jumpers on the platform select power...

Page 9: ...w the EVM to 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 alone The platform with room for a pair...

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

Page 11: ...signal and control inputs and signal outputs to the EVM using standard connectors The TPA751 EVM can also be used stand alone by making connections directly to the module pins and it can be wired dire...

Page 12: ...or both may result Figure 2 1 Quick Start Platform Map 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 J...

Page 13: ...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 6 Select and connect the power supply a...

Page 14: ...R3 R4 C3 Due to the very small size of the MSOP IC package the standard part number TPA751 is replaced with the code TIATC Power supply 1 Ensure that all external power sources are set to off 2 Conne...

Page 15: ...held low Figure 2 3 shows a TPA751 EVM connected for stereo BTL operation Figure 2 3 TPA751 EVMs Connected for Stereo BTL Output Audio Input Left External Mute Control active low 5 VDC Audio Input Rig...

Page 16: ...layers 2 5 1 TPA751 EVM Schematic Diagram Figure 2 4 shows the TPA751 EVM schematic Figure 2 4 TPA751 EVM Schematic Diagram C1 1 F C3 1 F R1 20 k IN Shutdown S1 OUT GND OUT R5 39 k R4 20 k NO C4 10 F...

Page 17: ...Murata GRM39 Y5V105Z10PT Newark R1 R3 R4 Resistor 20 k 1 16 W 5 0603 3 Panasonic ERJ 3GSYJ203 Digi Key P20KGCT ND R2 R5 Resistor 39 k 1 16 W 5 0603 2 Panasonic ERJ 3GSYJ393 Digi Key P39KGCT ND S1 Swit...

Page 18: ...PA751 EVM PCB Layers The following illustrations depict the TPA751 EVM PCB layers and silkscreen These drawings are not to scale Gerber plots can be obtained from any TI sales office Figure 2 5 TPA751...

Page 19: ...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 relating to any combination mac...

Page 20: ...Email epic ti com Internet www ti com sc epic Japan Phone International 81 3 3344 5311 Domestic 0120 81 0026 Fax International 81 3 3344 5317 Domestic 0120 81 0036 Internet International www ti com sc...

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