LC72191JM Overview
EN 3985C CMOS LSI LC72191, 72191M, 72191JM PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners Overview The LC72191, LC72191M and LC72191JM are PLL frequency synthesizers for electronic tuning. The LC72191, LC72191M and LC72191JM are optimal for AM/FM tuner circuits that require high mounting densities.
LC72191JM Key Features
- Programmable dividers
- FMIN pin: 130 MHz at 70 mVrms and 160 MHz at 100 mVrms input (built-in prescaler)
- AMIN pin: Pulse swallower and direct division techniques
- Output ports: 7 pins plementary outputs: 2 pins N-channel open drain outputs: 5 pins
- Input ports: 2 pins
- General-purpose counter: For measuring IF and other signals (Also used for station detection when functioning as an IF c
- HCTR pin: Frequency measurement (for inputs up to 70 MHz)
- LCTR pin: Frequency and period measurement
- PLL unlock detection circuit Detects phase differences of 0.55, 1.11, 2.22 and 3.33 µs
- Controller clock output: 400 kHz