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 GND CP1 IN VGG DIP 8 PIN GND CP 2 BL3208B OUT 1 OUT 2 DIP 8 PIN CP 1 VDD VGG IN BL3208A OUT 2 OUT 1 CP 2 VDD
Features ● Adjustable audio signal delay time range: 10.24ms102.4ms ● ● ● ● ● ● ● 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.
Address: No.810, YiShan Road ShangHai China Tel:86-021-64850700 Fax:86-64852222 Zip.200233
BL3208A/B 2048-Stage BBD
Application Circuit 3208
VDD
IN
100K
100K
100K
Low Pass Filter f1
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