Ordering number : ENA0229
Monolithic Linear IC
LA1787NM
Overview
Single-Chip Car Radio
System IC
The LA1787NM integrates the six circuit blocks required in a car tuner on a single chip.
Features
•
Improved noise prevention and reduction.
- Excellent three-signal characteristics equivalent to the Sanyo LA1193 FM front end IC.
- Improved medium and weak field noise canceller characteristics provide superb listenability.
- Improved separation.
- Built-in anti-birdie filter.
- Improved AM and FM temperature characteristics.
- Excellent FM S-meter linearity.
- Modified noise canceller circuit achieves improved noise rejection.
•
Improved AM adjacent channel characteristics (∆40kHz).
•
Double conversion AM tuner (upconversion).
- Fewer external components required than earlier double conversion tuners, no crystal required (when used as a pair
with the LC72144).
•
Built-in FM IF circuit sample-to-sample variations correction circuit for the FM IF circuit.
(The SD, KEYEDAGC, MUTE ON, ADJ, MUTE ATT, SNC, and HCC pins can all used fixed resistors.)
•
Improved FM separation temperature characteristics.
•
This product inherits the block arrangement of the LA1780M, and allows pin compatible design in end products.
•
The LA1787NM adds an FM S-meter shifter function to the LA1787M.
Functions
•
FM front end.
•
Multiplexer.
•
FM IF.
•
AM upconverter.
•
Noise canceller.
•
FM/AM switch.
•
MRC.
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.
92706 / 12506 MS OT B8-7095 No.A0229-1/6
SANYO [ SANYO SEMICON DEVICE ]
