Description
3
SLOU461 – November 2016
Copyright © 2016, Texas Instruments Incorporated
TAS2557 Evaluation Module
1
Description
The TAS2557 device is an amplifier with integrated boost converter and programmable digital signal
processor. The output amplifier is a Class-D device that can be driven to higher output levels with the on-
chip Class-H boost. The on-chip voltage and current sense, together with TI’s Smart Amp algorithm,
protect the speaker against overheating and excessive excursion.
The TAS2557 EVM supports evaluation and development with the TAS2557 device through the following
interfaces:
•
USB interface
–
TAS2557 control through PurePath™ Console 3 (PPC3) GUI, USB-HID
–
USB-class audio device, compatible with Microsoft
®
Windows
®
7+
•
Digital audio AP and PSIA interface through 100-mil headers
•
TI Learning Board 2 for speaker characterization
•
SPI interface for TAS2557 control
•
I
2
C interface for TAS2557 control
2
Specifications
Table 1. EVM Specifications
SOURCE
REQUIREMENT
Amplifier Power Supply (VBAT)
2.9 to 5.5 V
Analog Supply (AVDD)
1.65 to 1.95 V
Digital Supply (DVDD)
1.65 to 1.95 V
EVM Power Supply
5.0 V
IO Power Supply (IOVDD)
1.62 to 3.6 V
Output Power
5.7 W
USB, USB Class-Audio
Micro-USB B
3
Software
The TAS2557 EVM requires PurePath Console 3 with the TAS2557 plug-in.
NOTE:
The TAS2557 device needs to be configured using this software. It will not function without
this configuration.
Please refer to the Smart Amp Tuning Guide which can be found in the project folder at
for detailed information about this software and how to configure the TAS2559 device
for Smart Amp Speaker Protection.
