TAS5711

具有扬声器均衡、DRC 和 2.1 支持的 20W 立体声 I2S 音频放大器

The is a 20-W, efficient, digital audio power amplifier for driving stereo bridge-tied speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors and MPEG decoders. The device accepts a wide range of input data and data rates. A fully programmable data path routes these channels to the internal speaker drivers.

The TAS5711 is an I2S slave-only device receiving all clocks from external sources. The TAS5711 operates with a PWM carrier between 384-kHz switching rate and 352-KHz switching rate depending on the input sample rate. Oversampling combined with a fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20  kHz.

.

Audio Input/Output

.

20-W Into an 8- Load From an 18-V Supply

.

Wide PVDD Range, From 8 V to 26 V

.

Efficient Class-D Operation Eliminates Need for Heatsinks

.

One Serial Audio Input Two Audio Channels

.

2.1 Mode 2 SE + 1 BTL

.

2.0 Mode 2 BTL

.

Single-Filter PBTL Mode Support

.

I2C Address Selection Pin Chip Select

.

Supports 8-kHz to 48-kHz Sample Rate LJ/RJ/I2S

.

Audio/PWM Processing

.

Independent Channel Volume Controls With 24-dB to Mute

.

Separate Dynamic Range Control for Satellite and Subchannels

.

21 Programmable Biquads for Speaker EQ and Other Audio Processing Features

.

Programmable Coefficients for DRC Filters

.

DC Blocking Filters

.

Support for 3D Effects

.

General Features

.

Serial Control Interface Operational Without MCLK

.

Factory-Trimmed Internal Oscillator for Automatic Rate Detection

.

Surface Mount, 48-Pin, 7-mm × 7-mm HTQFP Package

.

Thermal and Short-Circuit Protection

.

Support for AD or BD Mode

.

Benefits

.

Up to 90% Efficient

.

AD and BD Filter Mode Support

.

SNR: 106 dB, A-Weighted

.

EQ: Speaker Equalization Improves Audio Performance

.

DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables

Speaker Protection, Easy Listening, Night-Mode Listening.

.

Separate DRC for Satellite and Subchannels

.

Autobank Switching: Preload Coefficients for Different Sample Rates.

No Need to Write new Coefficients to the Part When Sample Rate Changes.

.

Autodetect: Automatically Detects Sample-Rate Changes. No Need for

External Microprocessor Intervention

.

Requires Only 3.3 V and PVDD

.

APPLICA ONS

.

Television

.

iPod™ Dock

.

Sound Bar

iPod is a trademark of Apple Inc.