| ddress o no.810, yishan road shanghai china tel o 86-021-64850700 fax o 86-64852222 zip.200233 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 pdip 8 pin bl3207 gnd cp 1 in v gg cp v dd out 2 out 1 2 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 in low pass filter f140db/oct 3.3 input bias circuit 47 10k 100k in bl3207 out1 out2 100k 100k vdd cp v gg 1 cp 2 bl3102 5.6k rs 3.3 attn>40db/oct low pass filter f1 |
