Overview

The LA17000M is an all-in-one car tuner IC that incorporates a PLL frequency synthesizer and all functions of an AM/FM tuner in a single chip. By combining two chips, a PLL (LC72144 equivalent) and an FM tuner IC (LA1781M equivalent) into a single chip (*PLL + AM (up conversion) + FMFE + IF + NC + MCP + MRC), and as a result of optimal chip partitioning, the LA17000M improves the performance of car tuner systems, eliminates adjustments, and provides high reliability, all at a lower cost.

Features

• PLL on chip

• ADC (6 bits, 1 channel)

• IF counter and I/O port on chip permit simplification of the interface.

• Supports AM double conversion.

• Enhanced noise countermeasures

• Excellent tri-signal characteristics

• Improved medium and weak electric field NC characteristics

• Improved separation characteristics

• Anti-birdie filter on chip (analog/digital output)

• Multipath sensor output (analog/digital output)

• Cost-saving features

• AM double conversion (Up conversion method)

• Enhanced FM-IF circuit (When there is interference from adjacent frequencies, the software handles switching of the CF between wide and narrow automatically.)

• Because deviations in IF gain are only 1/3 that of earlier devices, adjustment is simplified when this IC is incorporated into a set; this IC also includes a shifter pin for VSM adjustment.

• Suited for smaller devices

• Permits high-frequency signal line processing in a tuner pack.

• Easily conformes to FCC standards