®
VFC32
Voltage-to-Frequency
and Frequency-to-Voltage
CONVERTER
FEATURES
q
OPERATION UP TO 500kHz
q
EXCELLENT LINEARITY
±
0.01% max at 10kHz FS
±
0.05% max at 100kHz FS
q
V/F OR F/V CONVERSION
q
MONOTONIC
q
VOLTAGE OR CURRENT INPUT
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.
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
V
OUT
Comparator
Input
+V
CC
f
OUT
–In
One-Shot
+In
Common
VFC32
–V
CC
One-Shot
Capacitor
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
©
1977 Burr-Brown Corporation
PDS-372G
Printed in U.S.A. October, 1998