TAS5731 - 20-W Stereo (2.1) Class-D Audio Amp w/ Audio Processing

The TAS5731 is a 20-W, efficient, digital-audio stereo 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 TAS5731 is a slave-only device receiving all clocks from external sources. The TAS5731 operates with a PWM carrier between a 384-kHz switching rate and a 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.

• 2-Ch I²S Input; 8-kHz to 48-kHz f_S
• 20-W Stereo, 8 Ω/18 V (THD+N = 10%)
• Up to 90% Efficient Operation
• Wide 8-V to- 21-V Supply Range;
  3.3-V Digital Supply
• Single-Device 2.1 Support (2 × SE + 1 × BTL)
• 70-mΩ R_DS(on) Device That Can Support
  2-Ω SE and 4-Ω BTL Modes
  • 12 V / 2 Ω / 8 W With SE mode
  • 12 V / 4 Ω / 15 W With BTL mode
• Speaker EQ (8 BQ per Channel), 2× DRCs
• P2P Compatible With the TAS5727
• Benefits
  • Direct Connect to Digital Processor
  • High Output Power From a Standard Supply
  • Eliminates Need for Heat Sink
  • Advanced Processing Improves Audio Experience