VFC110
SBVS021A − OCTOBER 1988 − REVISED APRIL 2007
High-Frequency
VOLTAGE-TO-FREQUENCY CONVERTER
FEATURES
D
D
HIGH-FREQUENCY OPERATION:
4MHz FS max
EXCELLENT LINEARITY:
±0.02%
typ at 2MHz
PRECISION 5V REFERENCE
DISABLE PIN
DESCRIPTION
The VFC110 voltage-to-frequency converter is a
third-generation VFC offering improved features and
performance. These include higher frequency operation,
an onboard precision 5V reference, and a Disable
function.
The precision 5V reference can be used for offsetting the
VFC transfer function, as well as exciting transducers or
bridges. The Enable pin allows several VFCs’ outputs to
be paralleled, multiplexed, or simply to shut off the VFC.
The open-collector frequency output is TTL-/
CMOS-compatible. The output may be isolated by using
an opto-coupler or transformer.
Internal input resistor, one-shot and integrator capacitors
simplify applications circuits. These components are
trimmed for a full-scale output frequency of 4MHz at 10V
input. No additional components are required for many
applications.
The VFC110 is packaged in a plastic 14-pin DIP. Industrial
and military temperature range gradeouts are available.
D
D
D
LOW JITTER
D
D
D
D
D
APPLICATIONS
INTEGRATING A/D CONVERSION
PROCESS CONTROL
VOLTAGE ISOLATION
VOLTAGE-CONTROLLED OSCILLATOR
FM TELEMETRY
I
IN
1
V
OUT
12
Comparator
11
+V
S
10
8
f
O U T
V
IN
2
Input Common
14
O ne− S ho t
7
5
V
R EF
D igital G roun d
E nab le
4
−
V
S
13
Analog Ground
3
5V
6
C
OS
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semiconductor products and disclaimers thereto appears at the end of this data sheet.
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PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
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1998−2007, Texas Instruments Incorporated
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