General Descroptions

SM7181 is an Audio Echo Processor and Built-in AD/DA and 8KBits SRAM for Echo Effect Time Delay and 8KBits SRAM for Echo Effect Time Delay.



  • Buildin adjustable OSC.
  • Buildin power on reset circuit.
  • Available in TO220-5L and TO263-5L packages.
  • Buildin 8KBits SRAM for delay control.
  • Thermal-shutdown and current-limit protection.
  • By change oscillator resistor to adjust echo effect time.


  • VCD
  • TV
  • Audio System
  • Car Stereo


  • SM7181 Datasheet
 Sales Information
  • Contact :Candy / Tony
  • TEL:+886-2-2365-5336 ext.202
  • FAX:+886-2-2365-5835