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TAS5342DDV6EVM 产品设计参考手册 - TI（德州仪器）
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TAS5342DDV6EVM数据手册
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1 Overview
Overview
The TAS5342DDV6EVM PurePath Digital™ customer evaluation module demonstrates the integrated
circuits TAS5342DDV and TAS5508BPAG from Texas Instruments (TI).
The TAS5342DDV is a high-performance, integrated stereo Digital Amplifier Power Stage designed to
drive 4- Ω speakers at up to 100 W per channel. The device incorporates TI Equibit™ technology and is
designed to be used with TI Equibit™ modulators. This system requires only a simple passive
demodulation filter to deliver high-quality, high-efficiency audio amplification.
The TAS5508BPAG is a high-performance, 32-bit (24-bit input) multichannel PurePath Digital™ pulse
width modulator (PWM) based on Equibit™ technology with fully symmetrical AD modulation scheme. The
device also has digital audio processing (DAP) that provides 48-bit signal processing, advanced
performance, and a high level of system integration. The device has interfaces for headphone output and
power supply volume control (PSVC).
This EVM is configured with four BTL channels, one PBTL (parallel BTL) channel for the center channel,
and a subwoofer lineout using the DRV600 line driver.
The DRV600RTJ is a stereo line driver designed to allow the removal of the DC-blocking capacitors for
reduced component count and cost. The DRV600RTJ is ideal for single-supply electronics where size and
cost are critical design parameters. The DRV600RTJ is capable of driving two VRMS into a 600- Ω load
with a 3.3-V supply. The DRV600RTJ has a fixed gain of –1.5 V/V. Independent shutdown control for the
left and right audio channels is implemented.
This EVM, together with a TI input-USB board, is a complete 5-channel + subwoofer line-output digital
audio amplifier system which includes digital input (S/PDIF), analog inputs, interface to a personal
computer (PC), and DAP features like digital volume control, input and output mixers, automute, tone
controls, loudness, EQ filters, and dynamic range compression (DRC). Configuration options are available
for power stage failure protection.
Table 1. TAS5342DDV6EVM Specification
Key Parameters
Output stage supply voltage 0 V – 31.5 V
Number of channels 4 × BTL, 1 x PBTL
Load impedance BTL 4–8 Ω
Load impedance PBTL 2–8 Ω
Output power BTL 120 W / 4 Ω 10% THD or 87 W / 6 Ω / 10% THD
Output power PBTL 225 W / 2 Ω / 10% THD
DNR >102 dB
PWM processor TAS5508BPAG
Output stage TAS5342DDV
Other features Subwoofer line output
SLAU239 – February 2008 TAS5342DDV6EVM 3
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