Overview

The LC72133M and LC72133V are a phase-locked loop frequency synthesizer LSI circuits for use in radio tuners. It supports low-voltage (2.7 to 3.6 V) operation and can implement high-performance AM/FM tuners easily.

Functions

? High speed programmable dividers

— FMIN: 10 to 120 MHz ..........pulse swallower

(built-in divide-by-two prescaler), VDD ≥ 2.7 V

10 to 130 MHz ..........pulse swallower

(built-in divide-by-two prescaler), VDD ≥ 3.0 V

— 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 circuit

— Deadlock clear circuit

? Built-in MOS transistor for forming an active low-pass

filter

? I/O ports

— Dedicated output ports: 4

— Input or output ports: 2

— Support clock time base output

? Serial data I/O

— Support CCB format communication with the

system controller.

? Operating ranges

— Supply voltage........................2.7 to 3.6 V

— Operating temperature............–20 to +70°C

? Package

MFP20

SSOP20