SY24175DGAC - High Performance, High Fidelity 20W Digital Audio-Power Amplifier


  • 2CH Stereo(20W×2BTL)
  • 2.0 BTL Mode or PBTL Mode
  • Support 4.5V to 28V PVDD Range
  • 32bit Fixed-Point DSP
  • 32kHz to 96kHz Sample Rate Support (LJ/RJ/I2S)
  • I2C Slave Address Selection
  • Independent Channel Volume Controls with 48dB to Mute
  • SDATA Generator (I2S output)
  • Two DC Blocking Filters
  • 18 PEQs or 12 PEQs + 6 SPEQs Each Channel for Speaker Protection and Speaker Compensation
  • 3 Bands Dynamic Range Control Plus A Post Dynamic Range Control
  • Loudness Control
  • Hard Clipper
  • Power Level Meter
  • 3-wire I2S Digital Audio Interface without MCLK
  • Thermal, Over-Current, Short-Circuit Protection and BQ/DRC Checksum
  • Support Automatic Audio Sample Rate Detection
  • Space Saving Package: TQFP7×7-48E

Typical Application


The SY24175D is a 2×20W, digital audio power amplifier for driving bridge-tied stereo speakers. One serial data input allows processing of up to two discrete audio channels and seamless integration to most digital audio processors. The SY24175D is an I2S slave device receiving all clocks from external sources.

The SY24175D has the essential audio signal processing functions like mixer, dynamic range control, loudness control, and parametric equalization.


  • LCD TV, LED TV or Monitor
  • Digital Speaker, Bluetooth Speaker
  • Sound bar