LC7218
Key Features
- These products 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 - 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
- Reference frequencies: Ten selectable frequencies: 1, 5, 9, 10, 3.125, 6.25, 12.5 25, 50 and 100 kHz
- Output ports: 7 pins Complementary 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 counter.) - 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
- Clock time base output: 8 Hz
- Serial data I/O - Supports CCB format communication with the system controller.
