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Overview

The LC72130 and LC72130M are PLL frequency synthesizers for use in tuners in radio cassette recorders and other products.

Applications

PLL frequency synthesizer

Functions

? High-speed programmable dividers

— FMIN: 10 to 160 MHz ..........pulse swallower(built-in divide-by-two prescaler)

— AMIN: 2 to 40 MHz ..............pulse swallower

0.5 to 10 MHz ...........direct division

? IF counter

— IFIN: 0.4 to 12 MHz ...........AM/FM IF counter

? Reference frequencies

— Twelve selectable frequencies(4.5 or 7.2 MHz crystal) 1, 3, 5, 9, 10, 3.125, 6.25, 12.5, 15, 25, 50 and 100 kHz

? Phase comparator

— Dead zone control

— Unlock detection

— Deadlock clear circuit

? Built-in MOS transistor for implementing an active low pass filter (two systems)

? Inputs and outputs

— Dedicated output ports: five pins

— Input or output ports: two pins

— Clock time base output available

? Serial data I/O

— Supports CCB format communication with the system controller.

? Operating ranges

— Supply voltage........................4.5 to 5.5 V

— Operating temperature............–40 to +85°C

? Packages

— DIP24S, MFP24S