AN18207A Просмотр технического описания (PDF) - Panasonic Corporation

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AN18207A

Tuner IC for home-audio stereo set

Panasonic Corporation 

AN18207A

„ Technical Data (continued)

y I/O block circuit diagrams and pin function descriptions (continued)

Note) The characteristics listed below are reference values derived from the design of the IC and are not guaranteed.

Pin Waveform

No. and voltage

Internal circuit

Impedance

Description

21

—

22 DC bias = 3.5 V

23

—

24 DC bias = 3.5 V

25

Composite

signal

26

—

27

AM-AF

21

1k

GND

12k

GND

VCC

7.35k 1.05k

GND

22

GND

23

1k

GND

12k

GND

VCC

7.35k 1.05k

GND

1.05k

25

498k

GND

3.5 V

24

GND

AM-DET

FM-DET

205

26

GND

12k

GND

1.05k

27

10k

GND

3.5 V

1 kΩ

TUNED/Test

SD-OUT

FM/AM tuning indicator

Test monitor output

8.4 kΩ

L-ch. de-emphasis output

(External capacitor 0.0056 μF

Time constant = 50 μs)

1 kΩ

ST-OUT

FM stereo indicator

8.4 kΩ

R-ch. de-emphasis output

(External capacitor 0.0056 μF

Time constant = 50 μs)

500 kΩ

FM MPX input

200 Ω

FM/AM detector output

(Please make it to OPEN

when unused.)

11 kΩ

AM AF input

SDC00078AEB

32

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