Overview
The LC72136 and LC72136M 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: 6
   — 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: 4.5 to 5.5 V
   — Operating temperature: –20 to +70°C
• Packages
   —DIP22S/MFP24S