TAS5727PHPR

具有EQ和DRC 25 W数字音频功率放大器 25-W DIGITAL AUDIO POWER AMPLIFIER WITH EQ AND DRC

DESCRIPON

The TAS5727 is a 25-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 TAS5727 is a slave-only device receiving all clocks from external sources. The TAS5727 operates with a PWM carrier between a 384-kHz switching rate and a 288-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.

FEATURES

• Audio Input/Output

– 25 W Into an 8-Ω Load From a 20-V Supply

– Wide PVDD Range, From 8 V to 26 V

– Supports BTL Configuration With 4-Ω Load

– Efficient Class-D Operation Eliminates Need for Heatsinks

– One Serial Audio Input Two Audio Channels

– I2C Address Selection Pin Chip Select

– Single Output Filter PBTL Support

– Supports 44.1-kHz to 48-kHz Sample RateLJ/RJ/I2S

• Audio/PWM Processing

– Independent Channel Volume Controls With ain of 24 dB to Mute With 0.125-dB Resolution  Steps

– Programmable Two-Band Dynamic-Range Control

– 18 Programmable Biquads for Speaker EQ and Other Audio-Processing Features

– Programmable Coefficients for DRC Filters

– DC Blocking Filters

• General Features

– I2C Serial Control Interface Operational Without MCLK

– Requires Only 3.3 V and PVDD

– No External Oscillator: Internal Oscillator for Automatic Rate Detection

– Surface-Mount, 48-Pin HTQFP Package

– Thermal and Short-Circuit Protection

– 106-dB SNR, A-Weighted

– AD, BD, and Ternary Modulation

– Up to 90% Efficient

– PWM Level Meter to Measure the Digital Power Profile

• Benefits

– EQ: Speaker Equalization Improves Audio Performance

– Two-Band DRC: Dynamic Range Compression. Can Be Used As Power Limiter. Enables Speaker Protection, Easy Listening, Night-Mode Listening

– Autodetect: Automatically Detects Sample-Rate Changes. No Need for External Microprocessor Intervention

APPLICATIONS

• LCD TV, LED TV, Soundbar