ba3708f ROHM Co. Ltd., ba3708f Datasheet - Page 4

• Manufacturer Part Number: ba3708f
• Description: Mute Detector Ic For 3v Sets
• Manufacturer: ROHM Co. Ltd.

FCircuit operation
(1)
The input amplifier is a PNP differential amplifier, and the
input pin (Pin 3) must be directly connected to ground
through a 10k
large, an input offset may occur and operation will be-
come unstable. The gain and frequency characteristics
of the amplifier are determined by C
to the input pin (Pin 3), and C
NF
(2)
An output pulse of width T
pin (Pin 7) after the pulse delay time T
when the input signal ends. The values of T
determined by the RC time constants of Pin 2 and Pin 1.
Audio ICs
B
pin (Pin 4). (Figure 3)
Input amplifier
Timing
T
T
D
W
(ms) 1.7 C
(ms) 1.6 C
or less bias resistor (R
D
W
( F) R
( F) R
W
is generated from the output
NF
and R
D
W
(k )
(k )
IN
NF
and R
connected to the
IN
D
). If R
which begins
IN
D
and T
connected
IN
is too
W
are
BA3708F
741