®
VRE202
VRE202
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Precision Voltage Reference
FEATURES
♦ Very High Accuracy: +2.5 V Output, ±300 µV
♦ Extremely Low Drift: 1.45 ppm/°C (25°C to
+85°C)
♦ Low Warm-up Drift: 1 ppm Typical
♦ Excellent Stability: 6 ppm/1000 Hrs. Typical
♦ Excellent Line Regulation: 6 ppm/V Typical
♦ Hermetic 20-Terminal Ceramic LCC
♦ Military Processing Option
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
DESCRIPTION
VRE202 Series Precision Voltage References provide
ultrastable +2.5 V outputs with ±300 μV initial accuracy
and temperature coefficient as low as 1.45 ppm/°C over
the full military temperature range. This improvement
in accuracy is made possible by a unique, proprietary
multipoint laser compensation technique. Significant
improvements have been made in other performance
parameters as well, including initial accuracy, warmup drift, line regulation, and longterm stability, making
the VRE202 series the most accurate and stable 2.5 V
surface mount references available.
The VRE202 device is available in the industrial operating temperature range, -25°C to +85°C, and two
electrical performance grades. All devices are packaged in 20-terminal ceramic LCC packages for maximum long-term stability.
Figure 1. BLOCK DIAGRAM
11
SELECTION GUIDE
Model
VRE202C
VRE202CA
Output (V)
Temperature
Operating Range
Volt Deviation
(MAX)
+2.5V
+2.5V
-25°C to +85°C
-25°C to +85°C
±250µV
±200µV
20-terminal Ceramic LCC
Package Style HD
VRE202DS
www.cirrus.com
Copyright © Cirrus Logic, Inc. 2011
(All Rights Reserved)
MAR 2011
1
APEX − VRE202DSREVJ
