Datasheet Summary
Ordering number : EN5743
CMOS IC
LC72137, 72137M
PLL Frequency Synthesizer for Electronic Tuning
Overview
The LC72137 and LC72137M are PLL frequency synthesizers for use in radio/cassette players. They allow high-performance AM/FM tuners to be implemented easily.
Package Dimensions unit: mm 3059-DIP22S
[LC72137]
Features
- High-speed programmable frequency divider
- FMIN: 10 to 160 MHz.....Pulse swallower (divide-by-two prescaler built in)
- AMIN: 2 to 40 MHz.........Pulse swallower 0.5 to 10 MHz......Direct division
- IF counter IFIN: 0.4 to 12 MHz................For use as an AM/FM IF counter
- Reference frequency
- Selectable from one of eight frequencies (crystal oscillator: 75...