Overview
The LC7216M is PLL frequency synthesizers for electronic tuning. The LC7216M is optimal for AM/FM tuner circuits that require high mounting densities.
Features
⢠This product feature a rich set of built-in functions for AV applications, including reference frequency and unlock detection circuits, I/O ports and a generalpurpose counter.
Functions
⢠Programmable dividers
â FMIN pin: 130 MHz at 70 mVrms and 160 MHz at 110 mVrms input (built-in prescaler)
â AMIN pin: Pulse swallower and direct division techniques
⢠Reference frequencies: Ten selectable frequencies: 1, 5, 9, 10, 3.125, 6.25, 12.5 25, 50 and 100 kHz
⢠Output ports: 5 pins Complementary outputs: 2 pins N-channel open drain outputs: 3 pins
⢠Input ports: 2 pins
⢠General-purpose counter: For measuring IF and other signals (Also used for station detection when functioning as an IF counter.)
â HCTR pin: Frequency measurement (for inputs up to 70 MHz)
â LCTR pin: Frequency and period measurement
⢠PLL unlock detection circuit Detects phase differences of 0.55, 1.11, 2.22 and 3.33 µs.
⢠Package: MFP20
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