Ordering number : ENN6568

D1500RM (OT) No. 6568-1/10

Overview

The LA1833N/NM is an AM/FM IF and MPX system-on-

chip IC that supports electronic tuning for home stereo

systems. It is optimal for use in auto-seek systems that use

SD (station detect) and IF counting in parallel.

Functions

• AM: RF amplifier, mixer, oscillator, IF amplifier,

detector, AGC, SD, oscillator buffer, IF buffer, and

stereo IF output

• FM IF: IF amplifier, quadrature detector, S meter, SD,

S-curve detector, IF buffer

• MPX: PLL stereo decoder, stereo indicator, forced

mono, VCO stop, audio muting, adjacent channel

interference reduction function, pilot canceller

Features

• Improvements over the LA1832

— The MPX VCO circuit has been integrated on the

same IC (no ceramic element required)

— Built-in adjacent channel interference reduction

function (114 kHz, 190 kHz)

— Built-in pilot canceler function (19 kHz)

— AM and FM output levels can be set independently

— Improved FM reception characteristics (IF beating

improved)

• Other features

— Pin arrangement nearly identical to that of the

LA1832

— AM coil specifications can be the same as those used

for the LA1832.

— ST operating dynamic range improved over that of

the LA1833

— FM

total

harmonic

distortion

detuning

characteristics and signal-to-noise ratio improved

over those of the LA1833

Package Dimensions

unit: mm

3112A-MFP24S

unit: mm

3067A-DIP24S

112

24

13

12.5

(0.75)

1.0

0.15

0.35

SANYO: MFP24S (300 mil)

[LA1833N]

LA1833N, 1833NM

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

System-on-Chip Tuner IC for Home Stereo Systems

Monolithic Linear IC

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

0.48

21.0

(0.71)

1.78

1

12

24

13

0.95

0.9

SANYO: DIP24S (300 mil)

[LA1833NM]