BL3207A/B 1024-Stage BBD Description The BL3207A/B is a 1024-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 51.2ms. Pin Assignment GND OUT 2 CP1 OUT 1 BL3207 IN CP 2 VGG VDD PDIP 8 PIN Features ・Adjustable audio signal delay time range:2.56ms-51.2ms ・Wide supply voltage range:4V-10V ・Typical insertion loss: Li=0dB ・Wide dynamic range: S/N=73dB(type) ・Low distortion: THD=0.4%(type) ・Clock frequency range:10kHz-200kHz ・N-channel silicon gate process ・8-pin plastic DIP Application KARAOKE, TV, VCR. Radio-Cassette Tape Recorder etc. Application Circuit Vdd Input Bias Circuit Rs 5.6K 3.3µ Low Pass Filter f1<foff<fcp Attn>40dB/oct Out 100K BL3207 47µ 100K in 100K Low Pass Filter f1<foff<fcp Attn>40dB/oct 10K IN 3.3µ out1 out2 Clock Component Cancellation Circuit CP2 CP1VGG BL3102 ddress： No.810, YiShan Road ShangHai China Tel：86-021-64850700 Fax：86-64852222 Zip.200233