LA1827M Просмотр технического описания (PDF) - SANYO -> Panasonic

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LA1827M

Monolithic Linear IC For Portable Radio/Cassette Recorders Single-Chip Tuner IC

SANYO -> Panasonic 

Continued from preceding page.

Pin No.

Pin function

9

ST-LED output

and

AM-IF output

LA1827M

Quiescent voltage (V)

AM

FM

3.0

3.0

Description

Active low

Open-collector output can directly drive

LED (IC max = 20mA)

In AM operation, AM-IF signal (450kHz) is

output here.

Equivalent circuit

9

10

FM-IF input

1.2

1.2

RIN = 330Ω

11

AM-IF input

1.2

1.2

RIN = 2kΩ

12

AM-AGC output

and FM S meter

output

0.5

0.1

Internal load resistance

R = 16.6kΩ

13

FM detector

2.4

2.2

Recommended ceramic discriminator

CDF107F-AE-019 (Toko)

CDA10.7MG83 (Murata)

10

RIN

2

11

RIN

2

12

R

13

14

Pilot tone

detector filter

and forced

mono switching

1.7

2.3

Mono mode is forced on by connecting pin

14 to ground.

15

Phase

comparator

filter and AM/FM

switching

0

2.3

FM reception mode is enabled when pin

15 is open.

AM reception mode is enabled when pin

15 is connected to ground.

16

L output

17

R output

1.2

1.2

ROUT = 7.5kΩ

14

15

16

ROUT

17

Continued on next page.

No.5658-6/12

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