THALER VRE204MA, VRE204M, VRE204CA, VRE204C Datasheet

VRE204

Precision Surface Mount
Reference Supply

THALER CORPORATION • 2015 N. FORBES BOULEVARD • TUCSON, AZ. 85745 • [phone]

FEATURES

•• 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

DESCRIPTION

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.

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

SELECTION GUIDE

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.

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.

Type

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

Output

Temperature

Operating Range

VRE204DS REV. C JUNE 1995

Max. Volt
Deviation

ELECTRICAL SPECIFICATIONS

Vps =±15V, T = 25°C, RL = 10KΩ unless otherwise noted.

VRE204

MODEL C CA M MA

PARAMETERS MIN TYP MAX MIN TYP MAX MIN TYP MAX MIN TYP MAX UNITS

ABSOLUTE MAXIMUM RATINGS

Power Supply +13.5 +22 * * * * * * V
Operating Temperature -25 85 * * -55 125 -55 125 °C
Storage Temperature -65 150 * * * * * * °C
Short Circuit Protection Continuous * * *

OUTPUT VOLTAGE

VRE204 +4.5 * * * V

OUTPUT VOLTAGE ERRORS

Initial Error 800 400 800 400 µV
Warmup Drift 2 1 2 * ppm
T

- T

min

max

(1)

400 200 600 300 µV
Long-Term Stability 6 * * * ppm/1000hrs
Noise (.1-10Hz) 3 * * * µVpp

OUTPUT CURRENT

Range ±10 * * * mA

REGULATION

Line 6 10 * * * * * * ppm/V
Load 3 * * * ppm/mA

OUTPUT ADJUSTMENT

Range 10 * * * mV
Temperature Coeff. 4 * * * µV/°C/mV

POWER SUPPLY CURRENTS

(2)

VRE204 +PS 5 7 * * * * * * mA

NOTES: *Same as C Models.

1.Using the box method, the specified value is the
maximum deviation from the output voltage at 25°C
over the specified operating temperature range.

2.The specified values are unloaded.

VRE204DS REV. C JUNE 1995