Texas Instruments SLOU025 manual Description, 1.3 TPA122 MSOP EVM Specifications, Introduction

Description

1.2 Description

The TPA122 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 TPA122 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 TPA122 Audio Amplifier Evaluation Module

Shutdown		VDD	GND
	S1	+
	R1	C5
IN1		R2
GND	C1	R3
			Vo1
	C2	U1²	GND
TEXAS
INSTRUMENTS			C4
	C3	R5
		R4	GND
IN2	SLOP127		Vo2
GND
	TPA122 MSOP EVM

² Due to the very small size of the MSOP IC package, the standard part number TPA122 is replaced with the code TIAAE

Single in-line header pins are mounted to the underside of the module circuit board to 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 has room for a single TPA122 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 ªhook up.º

1.3 TPA122 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