•• VERY HIGH ACCURACY: 4.5000 V OUTPUT ±0.4 mV

•• EXTREMELY LOW DRIFT: 0.6 ppm/°C -55°C to +125°C

•• EXCELLENT STABILITY: 6ppm/1000 Hrs. Typ.

•• EXCELLENT LINE REGULATION: 6 ppm/V Typ.

•• WIDE SUPPLY RANGE: +13.5 V to +22.0 V

•• HERMETIC 20 TERMINAL CERAMIC LCC

•• MILITARY PROCESSING AVAILABLE

VRE204

Precision Surface Mount

Reference Supply

DESCRIPTION

APPLICATIONS

•• PRECISION A/D and D/A CONVERTERS

•• TRANSDUCER EXCITATION

•• ACCURATE COMPARATOR THRESHOLD

REFERENCE

•• HIGH RESOLUTION SERVO SYSTEMS

•• DIGITAL VOLTMETERS

•• HIGH PRECISION TEST and

MEASUREMENT INSTRUMENTS

FEATURES

SELECTION GUIDE

VRE204 Series Precision Voltage References

provide ultrastable +4.500 V outputs with up to

±0.4

mV

initial

accuracy

and

temperature

coefficient as low as 0.6 ppm/°C over the full

military temperature range.

These references are specifically designed to be

used with the Crystal Semiconductor line of

successive-approximation type Analog-to-Digital

Converters (ADCs). This line of ADCs sets new

standards for temperature drift, which can only be

as good as the external reference used. The

Thaler VRE204 combined with a Crystal ADC will

provide

the

lowest

drift

data

conversion

obtainable.

Type

Output

Temperature

Operating Range

Max. Volt

Deviation

VRE204C

+4.5V

-25°C to +85°C

0.4mV

VRE204CA

+4.5V

-25°C to +85°C

0.2mV

VRE204M

+4.5V

-55°C to +125°C

0.6mV

VRE204MA +4.5V

-55°C to +125°C

0.3mV

VRE204 series devices are available in two operating temperature ranges, -25°C to +85°C and -55°C to

+125°C, and two performance grades. All devices are packaged in 20 terminal LCC ceramic packages

for maximum long-term stability. "M" versions are screened for high reliability and quality.

Superior stability, accuracy, and quality make the VRE204 ideal for all precision applications which may

require a 4.5V reference. High-accuracy test and measurement instrumentation, and transducer

excitation are some other applications which can benefit from the high accuracy of the VRE204.

VRE204DS REV. C JUNE 1995

THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • (520) 882-4000