First digital-input, closed-loop Class-D amp

The TAS5706 is a 20-W, efficient, digital audio power amplifier for driving stereo bridged-tied speakers. Two serial data inputs allow processing of up to four discrete audio channels and seamless integration to most digital audio processors and MPEG decoders, accepting a wide range of input data and clock rates. A fully programmable data path allows these channels to be routed to the internal speaker drivers or output via the subwoofer or headphone PWM outputs.

The TAS5706 is a slave-only device receiving all clocks from external sources. The TAS5706 operates at a 384-kHz switching rate for 32-, 48-, 96- and 192-kHz data, and at a 352.8 kHz switching rate for 44.1-, 88.2- and 176.4-kHz data. The 8X oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20 kHz. That’s High-Performance Analog>>Your Way™

Device	Power	Closed-Loop	Control	Audio Processing
TAS5706	20W x 2	Yes	I²C	Yes

KEY APPLICATIONS • Flat-panel TVs: DLP™, HDTV, LCD and plasma • Media docking stations • Mini-speakers • Wireless speakers    KEY FEATURES • Two serial interfaces with 32-kHz to 192-kHz sample rates (supports LJ, RJ and I2S formats) • Independent channel volume control • Programmable dynamic range control provides speaker protection, supports “night-time” listening modes • Speaker equalization compensates for poor quality speakers, reduces overall system-level cost • Closed-loop architecture • Feedback improves PSRR performance, enables reduced power-supply costs • Improved EMI performance • Up to 90% efficient • Dedicated subwoofer audio processing channel • Multiple output configurations   - 2-Ch BTL outputs (20W x 2) - 4-Ch SE outputs (10W x 4) - 2.1 output (10W x 2 SE + 20W X 1 BTL) - Headphone and subwoofer PWM outputs

High-Performance Analog >> Your Way™