LA1844MC View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

View to exact match

LA1844MC

For Home Stereo Single-chip Tuner IC

SANYO -> Panasonic 

Pin Functions

Pin No.

Function

1

FM IF input

Pin voltage

(V)

Vreg

LA1844MC

Equivalent circuit

Notes

Input impedance Ri = 330Ω

2

AM mixer output

VCC

Connect the mixer coil between this pin and VCC

3

REG

2.1

Vreg = 2.4V

4

AM IF input

Vreg

5

GND

6

Tu-LED

7

ST-LED / AM-IF

output

0

VCC

8

FM detector

9

VCC

10 AM / FM IF

counter output,

output control

switch,

mute switch

VCC

5.0

0

11

Phase comparator

VCC-1.0

low-pass filter

(AM/FM switching)

Input impedance Ri = 2kΩ

Active low

Open collector

The 600BEAS-10471 (Toko Mfg. Co., Ltd.) is

recommended for detector coil.

V10 ≤ 0.5V : Reception state (Normal)

1.4V ≤ V10 ≤ 2.2V : Muting on (Mute)

V10 ≥ 3.5V : IF counter output and muting on

(Seek)

The device operates in AM mode when a current

of over 200μA flows from pin 12.

Continued on next page.

No.A2057-6/11

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