Datasheet > AN8946SB

AN8946SB

更新时间： 2022-11-29 07:36:41

品牌	Logo	应用领域
松下 - PANASONIC		/
页数	文件大小	规格书
10页	88K
描述
FM demodulation IC for BS/CS broadcasting

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AN8946SB 数据手册

AN8946SB

ICs for TV

■ Terminal Equivalent Circuits (continued)

Voltage

(Open)

Pin No.

Equivalent circuit

Description

GND2

Apply 0 V

GND pin except VCO, AFC and IF

amp.

from outside

•

Loop amp. output

1.5 V

pin to drive a variable capacitance

diode for VCO.

•

200 Ω

2 mA

Pin 10 Video amp. input

Floating

Pin 11 Video amp. output

1.5 V

• Pin 10 is a reverse phase input pin to

pin11.

• When a resistor between pin 9 and

pin 10 is R1 and a resistor between

pin 10 and pin 11 is R2, the gain is

R2/R1 and a reverse signal to pin 9 is

outputted from pin 11

100 Ω

4.2 V

500 µA

2 mA

1.5 V

Free-run frequency adjustment

1.3 V

Changing pin 12 potential enables

you to cancel an offset voltage of a

loop amp.

•

13 kΩ

10 kΩ

13 kΩ

1...3 4 567 8 9 10

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