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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 I2S front-end like the Input-USB
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
12 - 38 Vdc
Current Requirements
Binding Post
PVDD
TAS5624 Power Supply Voltage
TAS5622 Power Supply Voltage
20 A
18 A
12 - 34 Vdc
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
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TAS5622-TAS5624DDVEVM
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