LC72131K Overview
ENA0788A LC72131K LC72131KMA CMOS IC PLL Frequency Synthesizer Overview The LC72131K and LC72131KMA are PLL frequency synthesizers for use in tuners in radio/cassette players. They allow high-performance AM/FM tuners to be implemented easily.
LC72131K Key Features
- High speed programmable dividers
- FMIN: 10 to 160MHz …………………….. pulse swallower (built-in divide-by-two prescaler)
- AMIN: 2 to 40MHz ………………………. pulse swallower 0.5 to 10MHz …………………….. direct division
- IF counter
- IFIN: 0.4 to 12MHz ………………………. AM/FM IF counter
- Reference frequencies
- Twelve selectable frequencies (4.5 or 7.2MHz crystal)
- Phase parator
- Dead zone control
- Unlock detection circuit
