92706 / 91004 JO IM No.7931-1/10

LA1845NV

The LA1845NV is designed for use in mini systems and is a single-chip tuner IC that provides electronic tuning

functions using SD/IF-count technique. It incorporates a pilot canceler and an adjustment-free MUX VCO circuit,

thus allows additional parts to be reduced.

Functions

• AM : RF amplifier, mixer, oscillator, IF amplifier, detector, AGC, SD, oscillator buffer, IF buffer, stereo IF output,

AGC time constant switch

• FM IF : IF amplifier, quadrature detector, S-meter, SD (signal detection), S-curve detection, IF buffer output

• MPX : PLL stereo decoder, stereo display, forced monaural, VCO stop, audio muting, adjacent channel interference

rejection function, pilot canceler

Features

• Integrated MPX VCO (ceramic resonators are no longer required.)

• Built-in adjacent channel interference rejection function (114kHz, 190kHz)

• Supports both SD and IF-count techniques

• Both FM SD sensitivity and bandwidth can be set

• Pilot canceler built in.

Maximum Ratings at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum Power Supply Voltage

VCC max

6V

Allowable Power Consumption

Pd max

Ta = 80°C with board

114.3mm

×76.1mm×1.6mm material :

Glass epoxy resin

360

mW

Operating Temperature

Topr

-20 to +80

°C

Storage Temperature

Tstg

-40 to +125

°C

Operating Conditions at Ta = 25

°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended Supply Voltage

VCC

5V

Operating Supply Voltage Range

VCC op

Ta = 80°C

4.3 to 5.5

V

Ordering number : ENN*7931

Monolithic Linear IC

Single-Chip Home Stereo IC

Any and all SANYO Semiconductor 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 Semiconductor representative

nearest you before using any SANYO Semiconductor products described or contained herein in such

applications.

SANYO Semiconductor 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 Semiconductor

products described or contained herein.