FEATURES

HIGH-FREQUENCY OPERATION:

4MHz FS max

EXCELLENT LINEARITY:

±0.02% typ at 2MHz

PRECISION 5V REFERENCE

DISABLE PIN

LOW JITTER

APPLICATIONS

INTEGRATING A/D CONVERSION

PROCESS CONTROL

VOLTAGE ISOLATION

VOLTAGE-CONTROLLED OSCILLATOR

FM TELEMETRY

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.