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1 Introduction
1.1 Description
User's Guide
SLOU254 – June 2009
TPA2051D3EVM
Contents
1 Introduction ................................................................................................................... 1
2 Operation ..................................................................................................................... 2
3 TPA2051D3EVM Schematic ............................................................................................... 9
4 TPA2051D3EVM PCB Layers ............................................................................................ 11
5 TPA2051D3EVM Parts List ............................................................................................... 13
List of Figures
1 Stereo Differential Mode Input Configuration ............................................................................ 3
2 Non-Differential Mode Input Configuration ............................................................................... 3
3 Place Shunts Horizontally Across SCL and SDA ........................................................................ 4
4 Starting the TPA2051D3 Interface ......................................................................................... 5
5 TPA2051D3EVM Graphical User Interface ............................................................................... 6
6 Connect I
2
C Controls to JP3 ............................................................................................... 8
7 TPA2051D3EVM Schematic ............................................................................................... 9
8 TPA2051D3EVM Schematic .............................................................................................. 10
9 TPA2051D3EVM – Top Layer ............................................................................................ 11
10 TPA2051D3EVM – Layer 2 .............................................................................................. 11
11 TPA2051D3EVM – Layer 3 ............................................................................................... 12
12 TPA2051D3EVM – Bottom Layer ........................................................................................ 12
List of Tables
1 Jumpers Default Setting .................................................................................................... 2
2 TPA2051D3EVM Parts List ............................................................................................... 13
The TPA2051D3 is a mono Class-D power amplifier along with a stereo DirectPath™ headphone amplifier
and bypass switch. TPA2051D3 has SmartGain™ technology to prevent output clipping. The input
channels have 32-step volume control and the DirectPath headphone amplifier has a 9-step level gain
control. The volume is controlled through an I
2
C™ interface. All amplifiers have output short-circuit and
thermal-overload protection.
The TPA2051D3EVM ( evaluation module) is a complete, stand-alone audio board. It contains the
TPA2051D3 WCSP(YFP) Class-D audio subsystem.
All components and the EVM are lead free.
DirectPath, SmartGain are trademarks of Texas Instruments.
Windows is a trademark of Microsoft Corporation.
I
2
C is a trademark of Philips Electronics.
SLOU254 – June 2009 TPA2051D3EVM 1
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