AN8946SB Datasheet, PDF (5/10 Pages) Panasonic Semiconductor – FM demodulation IC for BS/CS broadcasting

ICs for TV
s Terminal Equivalent Circuits
Pin No.
Equivalent circuit
1
1
1 kΩ
10 kΩ
2
10 kΩ _{1 kΩ}
2
200 Ω
AN8946SB
Description
Key pulse input
• No input at receiving NTSC signal.
• Input a key pulse in a direct DC con-
nection at receiving MUSE signal.
Voltage
(Open)
30 mV
AFC output L
• Output impedance can be lowered by
adding an external resistor.
0 V to 5 V
3
AFC output H
0 V to 5 V
10 kΩ _{1 kΩ}
3
• Output impedance can be lowered by
adding an external resistor.
200 Ω
4
V_CC2
Apply 5 V
• Supply power for VCO, AFC
from outside
4
5
VCO1
Floating
200 Ω 200 Ω
2 pF
2 pF
• Connects a resonance circuit between
pin 5 and pin 7.
10 Ω 2 pF
5
6
2 pF
2 mA
10 Ω
7
GND3
6
• GND for VCO, AFC
Apply 0 V
from outside
7
Same as VCO1
VCO2
Floating
• Connects a resonance circuit between
pin 5 and pin 7.
5