AN5637
s
Terminal Equivalent Circuits
Pin No.
1
Equivalent circuit
V
CC
150µA 100µA 200µA
ICs for TV
Description
Reference frequency signal/
Ident input Pin :
• Input and output pin for interfacing
with AN5192/95.
• The circuit becomes non-SECAM mode
if DC voltage of Pin1 becomes 3 V
or less.
• Current of 175
µA
sinks into Pin1
in SECAM.
Voltage
AC
+
DC
DC
1.1 V or 4.4 V
AC
350 mV[p-p]
or 0
To AN5192/95
200Ω
1
SECAM
/Non-SECAM
discrimination
Mode
changeover
3.7V
1.5kΩ 1.5kΩ
0/175µA
0/175µA
20kΩ
2
V
CC
Bell filter output monitor pin
AC
+
DC
DC
4.3 V
AC
200 mV[p-p]
2
200Ω
200µA 200µA
3
4
V
CC
Power supply pin
DC : 9 V
5
6.8kΩ
10kΩ
4
Black level
adjustment
0.01µF
15kΩ
Black level adjustment voltage input pin :
DC
• Monitoring
−(B−Y)
Out (Pin10),
1.45 V to 2.75 V
adjust Pin4 voltage so that pedestal
step difference becomes 0.
(using external volume)
• Pin4 voltage is generated by resistor
dividing Pin5 voltage so as not to be
affected by V
CC
and temperature
fluctuation.
100µA 200µA
5
V
CC
Black level adjustment reference voltage
output pin
DC : 3.2V
3.2V
5
100µA 100µA 400µA
8
PANASONIC [ PANASONIC SEMICONDUCTOR ]
