VRE117_1 Datasheet, PDF (1/5 Pages) Cirrus Logic – Precision Voltage Reference

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VREVR1E1171/71/1199
Precision Voltage Reference
FEATURES
♦ Very High Accuracy: ±3 V Output, ±300 µV
♦ Extremely Low Drift: 0.73 ppm/°C (-55°C to
+125°C)
♦ Low Warm-up Drift: 1 ppm Typical
♦ Excellent Stability: 6 ppm/1000 Hrs. Typical
♦ Excellent Line Regulation: 3 ppm/V Typical
♦ Hermetic 14-pin Ceramic DIP
♦ 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
VRE117/119 Series Precision Voltage References pro-
vide ultrastable +3 V (VRE117), and ±3 V (VRE119)
output with ±300 µV initial accuracy and temperature
coefficient as low as 0.73 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 regu-
lation, and long-term stability, making the VRE117/119
series the most accurate and stable 3 V reference
available.
VRE117/119 devices are available in two operat-
ing temperature ranges, -25°C to +85°C and -55°C
to +125°C, and two performance grades. All devices
are packaged in 14-pin hermetic ceramic packages
for maximum long-term stability. “M” versions are
screened for high reliability and quality.
Superior stability, accuracy, and quality make these
references ideal for precision applications such as A/D
and D/A converters, high-accuracy test and measure-
ment instrumentation, and transducer excitation.
Figure 1. BLOCK DIAGRAMS
VRE117
VRE119
VRE117DS
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Copyright © Cirrus Logic, Inc. 2009
(All Rights Reserved)
NOV 2009₁
APEX − VRE117DSREVE