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

SELECTION GUIDE

			Max. Volt	Max. Volt	Initial
	Type	Output	Deviation	Deviation	Accuracy
			(-55°C	(150°C	(Max)
			to +150°C)	to +180°C)
	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

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

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

VRE120/121/122

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

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 (1)

2

1

2

1

ppm

-55°C to 150°C (3)

1.5

1.0

*

*

mV

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

(2)

POWER SUPPLY CURRENTS

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.

2.The specified values are unloaded.

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

VRE120DS REV. C SEPT 1994

4-57