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Ordering number : EN2887B

Monolithic Linear IC

LA1805

AM/FM-IF/MPX Tuner System

for Radio-Casette Recorders, Music Centers

Overview

Package Dimensions

The LA1805 is a characteristics-improved version of the

unit : mm

LA1810, with the same pin assignment and package as

3067-DIP24S

those of the LA1810. Improvements are made on the

following point :

鈥?Separation (35dB鈫?8dB) and its dependence on free-

running frequency (Sep 鈥?f

F

Characteristic on page 4).

鈥?FM main distortion (0.8%鈫?.45%).

鈥?AM detection output (approximately 5dB increased).

The constants on five external parts are changed as shown

on page 10.

24

[LA1805]

13

7.62

6.4

1

21.2

12

Functions

鈥?FM-IF : IF amp, quadrature detector, soft muting, tuning

indicator.

鈥?MPX : PLL stereo decoder, stereo indicator, forced

monaural, VCO stop.

鈥?AM :RF amp, MIX, OSC (with ALC), IF amp, detector,

AGC, tuning indicator.

0.51min

3.3

3.25

3.9max

0.81

1.78

0.48

0.95

SANYO : DIP24S

Features

鈥?FM/AM/MPX functions contained on a single chip.

鈥?Minimum number of external parts required.

鈥?On-chip FM muting function.

鈥?High sensitivity.

鈥?Less carrier leak of MPX.

Specifications

Maximum Ratings

at Ta=25擄C, See specified Test Circuit.

Parameter

Maximum supply voltage

Maximum supply current

Flow-in current

(Indicator drive current)

Flow-out current

Allowable power dissipation

Operating temperature

Storage temperature

I

23

Pd max

Topr

Tstg

Pin 23

Ta鈮?0擄C

0.1

500

鈥?0 to +70

鈥?0 to +125

mA

mW

擄C

擄C

Symbol

V

CC

max

I

CC

max

I

LED

Conditions

Pins 3, 7, 8, 11, 20, 21

Pins 3+20+21

Pins 7, 8

Ratings

9

50

20

Unit

V

mA

mA

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

12798HA (KT)/D0994JN/4030MO/N148YT, TS No.2887-1/13

0.25

next

LA1805相關(guān)型號PDF文件下載

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