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Quick Setup Guide

CAUTION

Failure to observe ESD handling procedures can result in damage to EVM

components.

2.2

Unpacking the EVM

Upon opening the TAS5622-TAS5624DDVEVM package, check to make sure that the following items are

included:

•

1 pc. TAS5622-TAS5624DDVEVM using 1 TAS5538DGG and 1 TAS5622DDV or TAS5624DDV.

•

1 pc. TI Input-USB Board 3 for interfacing TAS5622-TAS5624DDVEVM to SPDIF/analog sources and

PC for control.

•

1 pc. Signal and Control Interface IDC cable for connection to an I

Board 3.

•

1 pc. Cable for connecting Input-USB Board 3 to a USB port on a PC for TAS5538 control by software.

•

If any of these items are missing, contact the nearest Texas Instruments Product Information Center to

inquire about a replacement.

Connect the Input-USB Board 3 to the TAS5622/14LDDVEVM using the delivered IDC cable.

2.3

Power Supply Setup

2 power supplies are needed to power the TAS5622-TAS5624DDVEVM. Voltage and current

requirements for the PVDD power supply are shown in the table below. Connect this power supply to the

EVM using banana cables or wires secured to the power supply binding posts PVDD and GND. A second

power supply, 12Vdc at 500mA, is required to power Input-USB Board 3. Connect the 12V power supply

to the Input-USB Board 3 using banana cables or wires secured to the power supply binding posts +12V

and GND.

Table 2. Recommended PVDD Power Supply Voltages

Description

Voltage Range

Current Requirements

Binding Post

TAS5624 Power Supply Voltage

12 - 38 Vdc

20 A

PVDD

TAS5622 Power Supply Voltage

12 - 34 Vdc

18 A

PVDD

CAUTION

NOTE: Applying voltages above specifications in Table 2 can cause permanent

damage to the hardware. Verify polarity of power supply connections before

powering the EVM.

NOTE:

The length of the power supply cable must be minimized. Increasing length of PSU cable is

likely to increase distortion for the amplifier at high output levels and low frequencies.

2.4

Speaker Connection

CAUTION

Both positive and negative speaker outputs are floating and cannot be

connected to ground (e.g. through an oscilloscope). To measure a BTL output

connect an oscilloscope probe to each side of the output, connect both ground

clips to EVM ground and use the oscilloscope math functions to show the

difference between the 2 probe signals.

7

SLAU376 – May 2012

TAS5622-TAS5624DDVEVM

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