SY24145QHC - High Performance, High Fidelity 20W Digital Audio-Power Amplifier


  • 2CH Stereo(20W×2BTL)
  • 2.0 BTL Mode or Single-Filter PBTL Mode Support 4.5V to 28V PVDD Range
  • 32bit Fixed-point DSP
  • 32kHz to 96kHz Sample Rate Support (LJ/RJ/I2S)
  • I2C Address Selection Pin
  • 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
  • Four Types of  Digital Filters with Different Roll-off
  • Loudness  Control
  • Hard Clipper
  • Power Level Meter
  • I2C Serial Control Interface Operational without MCLK
  • Thermal, Over-Current, Short-Circuit Protection and BQ/DRC Checksum
  • Support Automatic Audio Sample Rate Detection

Typical Application


The SY6045 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. SY6045 is an I2S slave device receiving all clocks from external sources.
The SY6045 has a mixer and Bi-Quad filters which can be used to accomplish essential audio signal processing functions like dynamic range control, loudness control, and parametric equalization.


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