LA1787NM Datasheet PDF - Sanyo Semiconductor

●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.