®

VFC32

International Airport Industrial Park

•

Mailing Address: PO Box 11400

•

Tucson, AZ 85734

• Street Address: 6730 S. Tucson Blvd.

• Tucson, AZ 85706

Tel: (602) 746-1111

• Twx: 910-952-1111

•

Cable: BBRCORP

• Telex: 066-6491

•

FAX: (602) 889-1510

•

Immediate Product Info: (800) 548-6132

FEATURES

q OPERATION UP TO 500kHz

q EXCELLENT LINEARITY

q V/F OR F/V CONVERSION

q MONOTONIC

q VOLTAGE OR CURRENT INPUT

APPLICATIONS

q INTEGRATING A/D CONVERTER

q SERIAL FREQUENCY OUTPUT

q ISOLATED DATA TRANSMISSION

q FM ANALOG SIGNAL MOD/DEMOD

q MOTOR SPEED CONTROL

q TACHOMETER

DESCRIPTION

The VFC32 voltage-to-frequency converter provides

an output frequency accurately proportional to its

input voltage. The digital open-collector frequency

output is compatible with all common logic families.

Its integrating input characteristics give the VFC32

excellent noise immunity and low nonlinearity.

Full-scale output frequency is determined by an exter-

nal capacitor and resistor and can be scaled over a

wide range. The VFC32 can also be configured as a

frequency-to-voltage converter.

The VFC32 is available in 14-pin plastic DIP, SO-14

surface-mount, and metal TO-100 packages. Commer-

cial, industrial, and military temperature range models

are available.

Voltage-to-Frequency

and Frequency-to-Voltage

CONVERTER

–In

One-Shot

+V

CC

f

OUT

–V

CC

VFC32

Common

+In

Comparator

Input

V

OUT

One-Shot

Capacitor

PDS-372G

Printed in U.S.A. October, 1998

SBVS015