THALER VRE122MA, VRE122M, VRE122CA, VRE122C, VRE121MA Datasheet

VRE120/121/122

Precision High Temperature
Reference Supplies

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

FEATURES

•• WIDE OPERATING RANGE: -55°C TO +180°C

•• EXTREMELY LOW DRIFT: 1 ppm /°C -55°C to +150°C

•• LOW WARM-UP DRIFT: 1 ppm Typ.

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

•• EXCELLENT LINE REGULATION: 3 ppm / V Typ.

•• HERMETIC 14-PIN CERAMIC DIP

•• PIN & FUNCTION COMPATIBLE WITH

AD2700, AD2710, MAX 670/671 REFERENCES

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

•• GEOLOGICAL EQUIPMENT

DESCRIPTION

VRE120 series references are designed to operate
over an extremely wide temperature range (-55°C
to +180°C) and still provide excellent accuracy.
The VRE120 provides a +10V output, the VRE121
provides a -10V and the VRE122 provides a ±10V
output. All types are available in commercial (C
suffix) and military (M suffix) models. The "M"
models are screened for high reliability and quality.
Two accuracy grades (standard and "A") are
available for all models.

The adjacent selector guide shows the limits of the
most important parameters of the VRE120 series
voltage references. The maximum voltage
deviation increases linearly with temperature from
the 150°C specification to the 180°C specification.
For example, the A grade maximum voltage
deviation of 1mV increases to 2mV at 175°C and is
3mV at 180°C. This degree of accuracy over such
a large temperature range has been achieved
using the Thaler Corporation patented multipoint
compensation technique.

All devices are packaged in 14-pin hermetic ceramic packages for maximum long term stability. They are pin
and function compatible with other Thaler references and AD2700, AD2710 and MAX 670/671 References

Type

VRE120C +10V 1.5mV 5.0mV 1.0mV
VRE120CA +10V 1.0mV 3.0mV 0.5mV
VRE120M +10V 1.5mV 5.0mV 1.5mV
VRE120MA +10V 1.0mV 3.0mV 0.8mV

VRE121C -10V 1.5mV 5.0mV 1.0mV
VRE121CA -10V 1.0mV 3.0mV 0.5mV
VRE121M -10V 1.5mV 5.0mV 1.5mV
VRE121MA -10V 1.0mV 3.0mV 0.8mV

VRE122C ±10V 1.5mV 5.0mV 1.0mV
VRE122CA ±10V 1.0mV 3.0mV 0.5mV
VRE122M ±10V 1.5mV 5.0mV 1.5mV
VRE122MA ±10V 1.0mV 3.0mV 0.8mV

SELECTION GUIDE

Max. Volt

Output

Deviation

(-55°C

to +150°C)

Max. Volt
Deviation

(150°C

to +180°C)

Initial

Accuracy

(Max)

Superior stability, accuracy, and quality make these references ideal for precision applications such as A/D
and D/A converters, high-accuracy test and measurement instrumentation, and transducer excitation.

VRE120DS REV. C SEPT 1994

4-56

ELECTRICAL SPECIFICATIONS

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

VRE120/121/122

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 -55 180 * * * * * * °C
Storage Temperature -65 150 * * * * * * °C
Short Circuit Protection Continuous * * *

OUTPUT VOLTAGE

VRE120 +10 * * * V

VRE121 -10 * * * V

VRE122 ±10 * * * V

OUTPUT VOLTAGE ERRORS

Initial Error 1.0 0.5 1.5 0.8 mV
Warmup Drift 2 1 2 1 ppm

-55°C to 150°C 1.5 1.0 * * mV

(1)

(3)

150°C to 180°C 5.0 3.0 * * mV

Long-Term Stability 6 * * * ppm/1000hr.
Noise (.1-10Hz) 6 * * * µVpp

OUTPUT CURRENT

Range ±10 * * * mA

REGULATION

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

OUTPUT ADJUSTMENT

Range 10 * * * mV
Temperature Coefficient 4 * * * µV/°C/mV

POWER SUPPLY CURRENTS

(2)

VRE120 +PS 5 7 * * * * * * mA

VRE121 -PS 5 7 * * * * * * mA

VRE122 +PS 7 9 * * * * * * mA
VRE122 -PS 4 6 * * * * * * 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.

4-57

2.The specified values are unloaded.

3. Cone widening from 150 °C value to specified value.

VRE120DS REV. C SEPT 1994