Hardware Overview
1
Hardware Overview
The TPA3251D2EVM PurePath™ Ultra-HD evaluation module demonstrates the TPA3251D2DDV
integrated circuit from Texas Instruments. The TPA3251D2DDV is a high-performance, high-power, class-
D amplifier that enables true premium sound quality with high efficiency class-D technology. It features an
advance integrated feedback design and high-speed gate driver error correction (PurePath Ultra-HD),
which enables ultra-low distortion across the audio band and superior audio quality. This EVM supports 2
BTL (stereo 2.0) output channels, 1 PBTL (mono 0.1) output channel, 1 BTL plus 2 SE (2.1) output
channels, and 4 SE (4.0) output channel configurations. The NE5532 is a high-performance audio op amp
designed to allow TPA3251D2DDV operation with differential or single-ended input signals to the EVM
with differential inputs yielding the optimal performance. TPA3251D2EVM is a complete 2 V
RMS
analog
input 2 × 175-W stereo/1 × 350-W mono high-power amplifier ready for evaluation and excellent listening
experience.
Figure 1. TPA3251D2EVM
1.1
TPA3251D2EVM Features
The TPA3251D2EVM has following features:
•
Stereo PurePath Ultra-HD evaluation module
•
Self-contained protection system (short circuit, clip, and thermal)
•
Standard 2 V
RMS
differential input or single-ended line input
•
BTL, PBTL, and SE output configuration support
•
Frequency adjust and oscillator sync interface
•
Single supply voltage range 18–38 V
•
Double-sided, plated-through, 2-oz Cu, 2-layer PCB layout
2
TPA3251D2EVM
SLVUAG8A – September 2015 – Revised October 2015
Copyright © 2015, Texas Instruments Incorporated