LA1805 Datasheet, PDF (1/13 Pages) Sanyo Semicon Device – AM/FM-IF/MPX Tuner System for Radio-Casette Recorders, Music Centers

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 :
24
• Separation (35dB→48dB) and its dependence on free-
[LA1805]
13
running frequency (Sep – f_F Characteristic on page 4).
• FM main distortion (0.8%→0.45%).
• AM detection output (approximately 5dB increased).
1
The constants on five external parts are changed as shown
12
21.2
on page 10.
Functions
0.81
1.78
0.48
0.95
• FM-IF : IF amp, quadrature detector, soft muting, tuning
indicator.
• MPX : PLL stereo decoder, stereo indicator, forced
monaural, VCO stop.
• AM :RF amp, MIX, OSC (with ALC), IF amp, detector,
AGC, tuning indicator.
SANYO : DIP24S
Features
• FM/AM/MPX functions contained on a single chip.
• Minimum number of external parts required.
• On-chip FM muting function.
• High sensitivity.
• Less carrier leak of MPX.
Specifications
Maximum Ratings at Ta=25°C, See specified Test Circuit.
Parameter
Symbol
Conditions
Maximum supply voltage
Maximum supply current
V_CC max Pins 3, 7, 8, 11, 20, 21
I_CC max Pins 3+20+21
Flow-in current
I_LED
Pins 7, 8
(Indicator drive current)
Flow-out current
Allowable power dissipation
I₂₃
Pd max
Pin 23
Ta≤70°C
Operating temperature
Topr
Storage temperature
Tstg
Ratings
Unit
9
V
50 mA
20 mA
0.1 mA
500 mW
–20 to +70
°C
–40 to +125
°C
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