■ Overview

The MN3309 is a 256-stage ultra low voltage operation BBD variable delay line in audio frequency range. The device operates on +3 V supply and provides a signal delay up to 12.8 ms and is suitable for use as reverberation effect of low voltage operation audio equipment such as portable stereo, radio cassette recorder and microphone.

■ Features

? Variable signal delay of the audio signal : 0.128 to 12.8 ms

? Wide range of supply voltage : 1.8 to 5.0 V

? No insertion loss : Li=0 dB typ.

? Wide dynamic range : S/N=74 dB typ.

? Low distortion : THD=0.4 typ. (Vi=0.22 Vrms)

? Clock frequency range : 10 to 200 kHz (1.8 V≤VDD<4.0 V)

10 kHz to 1 MHz (4.0 V≤VDD≤5.0 V)

? N-channel 2-layer silicon gate process

? 8-Pin Dual-In-Line Plastic Package

■ Applications

? Reverberation and echo effects of audio equipment such as radio cassette recorder, car radio, portable radio, portable stereo, echo microphone and Karaoke machine, etc.

? Sound effect of electronic musical instruments

? Variable or fixed delay of analog signals