BL0306 Datasheet, PDF (1/2 Pages) List of Unclassifed Manufacturers – Digital echo

BL0306 Digital echo
Description
The BL0306 is a digital ECHO IC fabricated with silicon gate CMOS technology . The BL0306 converts an
input analog signal to a digital signal and writes it into a memory IC,After a delay it reads out the digital
signal from the memory IC and then converts to an analog signal again.
Lower noise and distortion delay signal is obtained by BL0306 than by BBD. An A-D,
D-A converter block formed of ADM (Adaptive
Delta Modulation) circuit can produce a low-cost
delay system.(compatible with M50915P)
Pin Assignment
A6 1
MDI 2
CAS 3
RESET 4
DO 5
W6
RAS 7
A0 ₈
A2 ₉
A1 ₁₀
A7 ₁₁
A5 ₁₂
A4 ₁₃
A3 ₁₄
D-GND ₁₅
CC1 ₁₆
CC2 ₁₇
SHORT ₁₈
36 VCC
35 LPF2 OUT2
34 LPF2 OUT1
33 LPF2 IN1
32 LPF2 IN2
31 OP2 OUT
30 OP2 IN
29 A-GND
28 ^{LPF1 IN}
27 ^{LPF1 OUT}
26 ^{OP1 OUT}
25 ^{OP1 IN}
24 ^REF
23 ^{OSC IN}
22 ^{OSC OUT}
21 ^LONG
20 ^MIDD
19 ^CDI
PDIP 36Pin
Features
Low noise(-90dBV typ.)
Low distortion(0.5% typ.)
3 mode delay time (100,150,200ms)
Includes auto mute circuit to protect sound
from digital noise caused by delay time
mode change or power on.
Address No.810, YiShan Road ShangHai China Tel [phone] Fax [phone] Zip.200233