Overview

The LC72191, LC72191M and LC72191JM are PLL

frequency synthesizers for electronic tuning. The

LC72191, LC72191M and LC72191JM are optimal for

AM/FM tuner circuits that require high mounting

densities.

Features

Designed for use in car stereos, the LC72191 provides a

rich set of reference frequencies, I/O ports, a general-

purpose counter, and an unlock detection circuit.

Functions

• Programmable dividers

— FMIN pin: 130 MHz at 70 mVrms and 160 MHz at

100 mVrms input (built-in prescaler)

— AMIN pin: Pulse swallower and direct division

techniques

• Reference frequencies: Ten selectable frequencies:

1, 5, 9, 10, 3.125, 6.25, 12.5 25, 50 and 100 kHz

• Output ports: 7 pins

Complementary outputs: 2 pins

N-channel open drain outputs: 5 pins

• Input ports: 2 pins

• General-purpose counter: For measuring IF and other

signals (Also used for station detection when

functioning as an IF counter.)

— HCTR pin: Frequency measurement (for inputs up to

70 MHz)

— LCTR pin: Frequency and period measurement

• PLL unlock detection circuit

Detects phase differences of 0.55, 1.11, 2.22 and 3.33 µs.

• Controller clock output: 400 kHz

• Clock time base output: 8 Hz

• Serial data I/O

— Supports CCB format communication with the

system controller.

• Package: LC72191: DIP24S

LC72191M: MFP24

LC72191JM: MFP24S

Package Dimensions

unit: mm

3067-DIP24S

CMOS LSI

Ordering number : EN 3985C

D3096HA (OT)/D2593JN/6182JN No. 3985-1/16

SANYO: DIP24S

[LC72191]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN

PLL Frequency Synthesizer

for Electronic Tuning in Car Stereo Tuners

LC72191, 72191M, 72191JM

• CCB is a trademark of SANYO ELECTRIC CO., LTD.

• CCB is SANYO’s original bus format and all the bus

addresses are controlled by SANYO.