TAS5711 5711 Audio IC

20W DIGITAL AUDIO - POWER AMPLIFIER WITH EQ, DRC, AND 2.1 MODE.

FEATURES

• 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)

– 2.1Mode(2SE+1BTL)

– 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

• 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

• iPodTM 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.