VRE202 Просмотр технического описания (PDF) - Cirrus Logic
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VRE202 Datasheet PDF : 4 Pages
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VRVER2E02022
Precision Voltage Reference
Features
♦ Very High Accuracy: +2.5 V Output, ±200 µV
♦ Extremely Low Drift: 0.6 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 Instru-
ments
DESCRIPTION
VRE202 Series Precision Voltage References provide
ultrastable +2.5 V 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. 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 2.5 V
surface mount references available.
VRE202 devices are available in two operating tem-
perature 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.
Figure 1. BLOCK DIAGRAM
11
Selection Guide
Model
VRE202C
VRE202CA
VRE202M
VRE202MA
Output (V)
+2.5V
+2.5V
+2.5V
+2.5V
Temperature
Operating Range
-25°C to +85°C
-25°C to +85°C
-55°C to +125°C
-55°C to +125°C
Volt Deviation
(MAX)
±200µV
±100µV
±400µV
±200µV
VRE2h0tt2pD://Swww.cirrus.com
Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
20-terminal Ceramic LCC
Package Style HD
JUL 20091
APEX − VRE202DSREVH
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