AN8946SB Datasheet, PDF (7/10 Pages) Panasonic Semiconductor – FM demodulation IC for BS/CS broadcasting

ICs for TV
s Terminal Equivalent Circuits (continued)
Pin No.
13
Equivalent circuit
13
500 Ω
1 mA
14
14
500 Ω
1 mA
15
100 µA 200 µA
AN8946SB
Description
Loop amp. input 1
• Connect a lag-lead filter between pin
13 and pin 14.
Voltage
(Open)
1.5 V
Loop amp. input 2
• Connect a lag-lead filter between pin
13 and pin 14.
1.5 V
AFC adjustment
• Adjust a center frequency of AFC by
changing pin 15 potential.
4.8 V
200 Ω
15
14.2 kΩ
16
20 kΩ
16
1 kΩ
AGC output 2
5V
• Output pin for external AGC (previ-
ous stage)
17
AGC output 1
5V
• Filter pin for inner AGC
20 kΩ _{20 kΩ 200 Ω}
1 kΩ
17
7