THALER VRE127MA, VRE127M, VRE127CA, VRE127C, VRE125MA Datasheet

VRE125/127

Precision High Temperature
Reference Supplies

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

FEATURES

•• WIDE OPERATING RANGE: -55°C to +200°C

•• VERY HIGH ACCURACY: 5.000 V ±0.4 mV

•• EXTREMELY LOW DRIFT: 0.6 mV (-55°C to +150°C)

•• EXCELLENT STABILITY: 6 ppm / 1000Hrs.

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

•• HERMETIC 14-PIN DIP

2.0 mV (-55°C to +200°C)

APPLICATIONS

•• PRECISION A/D and D/A CONVERTERS

•• ACCURATE COMPARATOR

THRESHOLD VOLTAGE

•• HIGH RESOLUTION SERVO SYSTEMS

•• HIGH TEMPERATURE TEST and

MEASUREMENT SYSTEMS

•• TRANSDUCER EXCITATION

•• GEOLOGICAL EQUIPMENT

DESCRIPTION

VRE125 series references are designed to
operate over an extremely wide temperature
range (-55°C to +200°C) and still provide
excellent accuracy. The VRE125 provides a +5V
output and the VRE127 provides a ±5V output.
All types are available in commercial (C suffix)
and military (M suffix) models. They are
hermetically sealed and are screened for high
reliability and quality. Two accuracy grades
(standard and A) are available in both models.
The adjacent selector guide shows the limits of
the most important parameters of the
VRE125/127 series references.

The accuracy of the VRE125/127 series over
temperature is achieved by using Thaler

Corporation's patented multi-point compensation technique. The stability of the VRE125 series is enhanced
by using a zener diode instead of a bandgap reference, which is typically used in 5V references. Zener
diodes have better long term stability and don't suffer the significant shifts caused by temperature cycling
that bandgap references do.

Type

VRE125C +5V ±0.9mV ±3.0mV ±0.8mV
VRE125CA +5V ±0.6mV ±2.0mV ±0.4mV
VRE125M +5V ±0.9mV ±3.0mV ±0.8mV
VRE125MA +5V ±0.6mV ±2.0mV ±0.4mV

VRE127C ±5V ±0.9mV ±3.0mV ±0.8mV
VRE127CA ±5V ±0.6mV ±2.0mV ±0.4mV
VRE127M ±5V ±0.9mV ±3.0mV ±0.8mV
VRE127MA ±5V ±0.6mV ±2.0mV ±0.4mV

SELECTION GUIDE

Max. Volt

Output

Deviation

(-55°C

to +150°C)

Max. Volt
Deviation

(150°C

to +200°C)

Initial
Error

(Max)

Other performance parameters, such as warm-up drift and long term stability are better than competitive
models.

Superior stability, accuracy, and quality make these references ideal for high temperature applications such
as A/D and D/A converter references.

VRE125DS REV. C SEPT 1994

ELECTRICAL SPECIFICATIONS

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

VRE125/127

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 -55 200 * * * * * * °C
Storage Temperature -65 150 * * * * * * °C
Short Circuit Protection Continuous * * *

OUTPUT VOLTAGE

VRE125 +5 * * * V

VRE127 ±5 * * * V

OUTPUT VOLTAGE ERRORS

Initial Error 0.8 0.4 0.8 0.4 mV
Warmup Drift 2 1 2 1 ppm

-55°C to 150°C 0.9 0.6 * * mV

(1)

(3)

150°C to 200°C 3.0 2.0 * * mV

Long-Term Stability 6 * * * ppm/1000hr.
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 Coefficient 4 * * * µV/°C/mV

POWER SUPPLY CURRENTS

(2)

VRE125 +PS 4 7 * * * * * * mA

VRE127 +PS 6 9 * * * * * * mA

VRE127 -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.

2.The specified values are unloaded.

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

VRE125DS REV. C SEPT 1994