Description
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 8× oversampling combined with the fourth-order noise shaper provides a flat noise floor and excellent dynamic range from 20 Hz to 20? kHz.
- 20-W into an 😯 Load From an 18-V Supply
- Two Serial Audio Inputs (Four Audio Channels)
- Supports Multiple Output Configurations:
- 2-Ch Bridged Outputs (20 W × 2)
- 4-Ch Single-Ended Outputs (10 W × 4)
- 2-Ch Single-Ended + 1-Ch Bridged (2.1) (10 W × 2 + 20 W)
- Improved PSRR Reduces Power Supply Performance Requirements
- Higher Damping Factor Provides for Tighter, More Accurate Sound
With Improved Bass Response - Constant Output Power Over Variation in Supply
- No Separate Supply Required for Gate Drive
- Independent Channel Volume Controls With 24-dB to
–100-dB Range—Soft Mute (50% Duty Cycle) - Programmable Dynamic Range Control
- 16 Programmable Biquads for Speaker Equalization
- Adaptive Biquad Coefficients for EQ and DRC Filters
- Programmable Input and Output Mixers
- Loudness Compensation for Subwoofer
- Automatic Sample-Rate Detection and Coefficient Banking
- Serial Control Interface Operational Without MCLK
- Factory-Trimmed Internal Oscillator Avoids the Need for External Crystal
- Surface Mount, 64-Terminal, 10-mm × 10-mm HTQFP Package
- Thermal and Short-Circuit Protection
