Texas Instruments TPA 311 manual Description, 1.3 TPA311 EVM Specifications, Introduction

Description

1.2 Description

The TPA311 Audio Power Amplifier Evaluation Module is a complete, low- power single-channel audio power amplifier. It consists of the TI TPA311 350-mW Low-Voltage Audio Power Amplifier IC 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 TPA311 Audio Amplifier Evaluation Module

Shutdown	VDD GND
			±3
S1	C5	C3	009227
R1			OUT±
C2			GND
R5		U1	OUT+
C4
	R3		Literature #
SE\BTL*
			SLOP116
R2
IN+C1
R4
GND TPA311			EVM

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 pair of TPA311 evaluation modules and is a convenient vehicle for demonstrating TI's audio power amplifier and related evaluation modules. The EVMs simply plug into the platform, which auto- matically 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 TPA311 EVM Specifications

Supply voltage range, VDD	. 2 V to 5.5 V
Supply current, IDD	250 mA, max
Continuous output power, PO: 8-ΩBTL, VDD =5 V:	. . . . 350 mW
32-ΩBTL, VDD =5 V:	. . . . . 75 mW
Audio input voltage, VI	. 2 Vpp, max
Minimum load impedance, RL	. . . . . . . . 8 Ω

1-4 Introduction