●DESCRIPTION
●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 Rate(LJ/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
