TAS5711PHPRG4中文资料德州仪器数据手册PDF规格书

1FEATURES

2• Audio Input/Output

– 20-W Into an 8-Ω 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

APPLICATIONS

• Television

• iPod™ Dock

• Sound Bar

DESCRIPTION

The TAS5711 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.