Overview
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.