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Ordering number : EN4922C
CMOS LSI
LC72146, 72146M
PLL Frequency Synthesizer for Electronic Tuning
Overview
The LC72146 is a PLL frequency synthesizer LSI circuit for electronic tuning in car stereo systems. The LC72146 supports the construction of high-performance, multifunctional electronic tuning systems for the VHF MW, and LW bands.
Package Dimensions
unit: mm 3067-DIP24S
[LC72146]
Features
• High-speed programmable dividers for — 10 to 160 MHz on FMIN using pulse swallower — 0.5 to 40.0 MHz on AMIN using pulse swallower and direct division • General-purpose counters — HCTR for 0.4 to 25.0 MHz frequency measurement — LCTR for 10 to 500 kHz frequency measurement and 1.0 Hz to 20 × 103 kHz period measurement • Reference frequencies: Twelve selectable reference frequencies (4.5 or 7.