THALER VRE202MA, VRE202M, VRE202CA, VRE202C Datasheet

VRE202

Precision Surface Mount
Reference Supplies

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

FEATURES

• VERY HIGH ACCURACY: 2.5000 V OUTPUT ±200 µV

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

• LOW WARM-UP DRIFT: 1 ppm Typ.

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

• EXCELLENT LINE REGULATION: 6ppm/V Typ.

• HERMETIC 20 TERMINAL CERAMIC LCC

• MILITARY PROCESSING OPTION

DESCRIPTION

VRE202 Series Precision Voltage References
provide ultrastable +2.5000V outputs with ±200
µV initial accuracy and temperature coefficient as
low as 0.6 ppm/°C over the full military
temperature range. This improvement in accuracy
is made possible by a unique, proprietary
multipoint laser compensation technique
developed by Thaler Corporation. Significant
improvements have been made in other
performance parameters as well, including initial
accuracy, warm-up drift, line regulation, and long­term stability, making the VRE202 series the most
accurate and stable 2.5V surface mount
references available.

VRE202 devices are available in two operating
temperature ranges, -25°C to +85°C and -55°C to
+125°C, and two electrical performance grades.
All devices are packaged in 20 terminal ceramic
LCC packages for maximum long-term stability.
"M" versions are screened for high reliability and
quality.

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

Type

VRE202C +2.5V -25°C to +85°C 200µV
VRE202CA +2.5V -25°C to +85°C 100µV

VRE202M +2.5V -55°C to +125°C 400µV
VRE202MA +2.5V -55°C to +125°C 200µV

Output

Temperature

Operating Range

Max. Volt
Deviation

VRE202DS REV. D NOV 2000

ELECTRICAL SPECIFICATIONS

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

VRE202

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

VRE202 +2.5 * * * V

OUTPUT VOLTAGE ERRORS

Initial Error 300 200 300 200 µV
Warmup Drift 2 1 2 1 ppm
T

- T

min

max

(1)

200 100 400 200 µV
Long-Term Stability 6 * * * ppm/1000hrs
Noise (.1-10Hz) 1.5 * * * 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)

VRE202 +PS 5 7 * * * * * * mA
VRE202 -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.

VRE202DS REV. D NOV 2000