LC72137MA-AE

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.
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 kHz) 1, 3, 5, 3.125, 6.25, 12.5, 15, and 25 kHz
• Phase comparator — Supports dead zone control — Built-in unlock detection circuit — Built-in deadlock clear circuit
• Built-in MOS transistor for forming an active low-pass filter
• I/O ports — Dedicated output ports: 4 — I/O ports: 2 — Supports clock time base output
• Serial Data I/O — Supports CCB format communication with the system controller.
• Operating ranges — Supply voltage: 2.5 to 3.6 V — Operating temperature: –20 to +70°C
• Packages —DIP22S/MFP20