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BL0305 Digital Echo (Digital Delay)

Description
The BL0305 is a CMOS IC for generating echo to be added to the voice through a “karaoke” microphone. It
is designed for the lowest price of models in the same series,and is suitable for application to the echo
generator of a radio cassette player, minicomponent stereo set, TV etc. Increased master clock frequency
assures highperformance short delay, enabling the IC to be used for digital surround ( Compatible with
M65844P).
LPF1 IN 1
LPF1 OUT 2
OP1 IN
OP1 OUT
4
3
CC2
CC1
7
6
5
GND
REF
LPF2 IN
OP2 IN
OP2 OUT
CLOCK
V
12
9
8
10
11
13
14
LPF2 OUT
DIP 14 Pin
Pin Assignment
BL0305
CC

Features
·All functions necessary for generating
digital echo are contained, enabling
production of low-priced echo generator.
·C-R oscillation circuit is provided for a master clock,
·Built-in auto power-on reset circuit.
·No control signal is required.
·Delay time=150msec(with master clock set at 220 kHz)
·14-pin DIP package.(14PDIP)