[YAGAO]

Outline
ETK3699 is a surround sound reverberation processing circuit, mainly for television, audio, karaoke OK reverb and other audio equipment. Built operational amplifier, VCO (Voltage Control OSC), A / DC, D / AC, SRAM (40Kb) and a delay time control circuit, It features built-in that simplifies external VCO circuit application and easy to control the oscillation frequency, so as to fine-tune the delay effect. In addition, ETK3699 only 16-pin, very few external components needed help simplified PCB layout and can be more cost effective.

FEATUREs
 Operating voltage: 4.5V ~ 5.5V
 automatic reset function
 Low Noise: echo reverb mode -85dB; -90dB Surround mode
 harmonic distortion rate: echo reverb mode THD <1%; Surround mode THD <0.2%
 built-in 40Kb SRAM
 by an external resistor to adjust the frequency of the VCO
 ADM algorithm
 used DIP16 or SOP16 package

Applications
 player
 TV
 Kara OK reverberation
z electronic audio equipment