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
