LA1837M 查看數據表（PDF） - ON Semiconductor

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LA1837M

Single-Chip AM/FM Tuner IC for Home Stereo Systems

ON Semiconductor 

Coil Specifications

• AM oscillator (for the DUT)

HW-50425 (Mitsumi Electric Co., Ltd.)

LA1837M

• IFT

YD-1073-1 (Mitsumi Electric Co., Ltd.)

• FM-DET

600BEAS-9715Z (Toko Electric Corporation)

Pin Function

Pin No.

Pin

1

FM IF input

Pin

voltage

Vreg

2

AM mixer output VCC

Equivalent circuit

Pin function

Input impedance ri = 330 Ω

Connect the mixer coil between this pin and VCC.

3

FM IF input

bypass

4

AM IF input

Vreg

Vreg

See pin 1

5

GND

0V

6

TU-LED,

VCC

7

ST-LED,

VCC

AM - IF output

8

VCC

9

FM detector

VCC

Also used for the multiplex regulator filter

Input impedance ri = 2 kΩ

Active low

Open collector

AM stereo IF output (pin 7)

This pin must be set up with an influx current under 150µA.

Recommended detector coil

600BEAS-9715Z (The Toko Electric Corporation)

Continued on next page.

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