Texas Instruments SLOU023A manual Description, 1.3 TPA112 MSOP EVM Specifications, Introduction

Description

1.2 Description

The TPA112 MSOP audio power amplifier evaluation module is a complete, low-power stereo audio power amplifier for high-fidelity line-level output, headphone, and small speaker applications. It consists of the TI TPA112 150-mW stereo 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 (Figure 1–1).

Figure 1–1. The TI TPA112 Audio Amplifier Evaluation Module

TEXAS	Vdd	GND
INSTRUMENTS	+

IN1– IN1+

R5

R6

			C5
	C4	R7
C1				R8
R1					Vo1
R2
					GND
R3
R4
C2					C6

U2

C3

IN2–

JP1

C7 R9 R10 GND Vo2

IN2+

SLOP126

TPA112 MSOP EVM

† Due to the very small size of the MSOP IC package, the standard part number TPA112 is replaced with the code TIAAD

Single in-line header pins are mounted to the underside of 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-alone.

The platform has room for a single TPA112 evaluation module. It 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 TPA112 MSOP EVM Specifications

Supply voltage range, VDD	. . . . . 2.5 V to 5.5 V
Supply current, IDD	. . . . . 160 mA, max
Continuous output power, PO: 8 Ω , VDD =5 V	. . . . . . . . . . 150 mW
Audio input voltage, VI	VDD + 0.3 Vpp, max
Minimum load impedance, RL	. . . . . . . . . . . . . . 8 Ω

Introduction 1-3