KA22427C データシートの表示（PDF） - Samsung

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KA22427C

AM/FM 1 CHIP RADIO

Samsung 

KA22427C

AM/FM 1 CHIP RADIO

FUNCTION DESCRIPTION (Pin 16 DC Voltage)

1. IF Gain Grouping Table

(1) Test Condition: VCC = 9V (Pin 13).

Pin 8 resistance (AM) =47KΩ

Pin 16 resistance (FM) = 1.2KΩ

(2) Grouping Table

V16(AM)

V16(FM)

2.4 - 2.85V

1.4 - 1.7V

2B

2. IF gain is determined by DC voltage appeared at IC Pin 16.

The DC voltage at Pin 16 to the following values:

AM = 1.4 ~ 1.65V (DC)

FM = 1.9 ~ 2.10V (DC)

AM gain can be adjusted by the loading resistor vatue of Pin 8 (AM) from 33KΩto infinity.

FM gain can be adjusted by the loading resistor value of Pin 16 (FM) from 3KΩto 680Ω.

Recommended resistance (Pin 8, Pin 16).

Pin 8 (AM) = 47KΩ

Pin 16 (FM) = 470Ω

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