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BL3208A/B 2048-Stage BBD

Description

The BL3208A/B is a 2048-stage low voltage operation, and low noise BBD variable delay line in audio

frequency range. The device operates on +5V to +10V supply and provides a signal delay up to 102.4ms.The

BL3208 contains 3208A and 3208B two classes. The only differences between them are the outlook and pin

assignment.

Pin Assignment

DIP 8 PIN

BL3208A

GND

IN

CP

2

V

IN

1

BL3208B

DIP 8 PIN

GG

DD

V

CP

CP

GND

OUT

OUT

2

2

1

Features

● Adjustable audio signal delay time range: 10.24ms-

102.4ms

● Wide supply voltage range: 5V-10V

● Typical insertion loss: Li=0dB

● Wide dynamic range: S/N=71B(type)

● Low distortion: THD=2.5%(type)

● Clock frequency range: 10kHz-100kHz

● N-channel silicon gate process

● 8-pin plastic DIP for BL3208A, and 8-pin plastic

DIP in outlook of 14-pin DIP for BL3208B

Application

● Chorus, fading, vibrato and reverberation on effects

of audio equipments.

● Sound effect of electronic musical instruments

● Variable or fixed time-delay circuit for analog signals.