Overview
The LC72136N and LC72136NM 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
â FMIN: 10 to 160 MHz.....Pulse swallower (divide-by-two prescaler built in)
â 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
â 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
â Supports dead zone control
â Built-in unlock detection circuit
â Built-in deadlock clear circuit
⢠Built-in MOS transistor for forming an active low-pass filter
⢠I/O ports
â Dedicated output ports: 6
â I/O ports: 2
â Supports clock time base output
⢠Serial Data I/O
â Supports CCB format communication with the system controller.
⢠Operating ranges
â Supply voltage: 4.5 to 5.5 V
â Operating temperature: â20 to +70°C
⢠Packages
âDIP22S/MFP24S
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