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Equivalent Block Diagram
LC73861, LC73862
Bias
genera-
tor
Anti-aliasing
filter
Dial-tone
filter
Timing
generator
High-fre-
quency
group
bandpass
filter
Low-fre-
quency
group
bandpass
filter
Fre-
quency
detector
Fre-
quency
detector
Test Circuit / Sample Application Circuit
Output
signal
control
circuit
Shift
register
No.4431-4/5