VRE104_1 Datasheet, PDF (1/5 Pages) Cirrus Logic – Precision Voltage Reference

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VRVER1E01044
Precision Voltage Reference
FEATURES
♦ Very High Accuracy: +4.5 V Output, ±0.8 mV
♦ Extremely Low Drift: 0.74 ppm/°C (-55°C to
+125°C)
♦ Excellent Stability: 6 ppm/1000 Hrs. Typical
♦ Excellent Line Regulation: 6 ppm/V Typical
♦ Wide Supply Range: ±13.5 to ±22.0 V
♦ Hermetic 14-pin Ceramic DIP
♦ Military Processing Options
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
VRE104 Series Precision Voltage References pro-
vide ultrastable +4.5 V outputs with up to ±0.8 mV
initial accuracy and temperature coefficient as low as
0.74ppm/°C over the full military temperature range.
These references are specifically designed to be used
with the Crystal Semiconductor line of successive-ap-
proximation type Analog to Digital Converters (ADCs).
This line of ADCs sets new standards for temperature
drift, which can only be as good as the external refer-
ence used. The VRE104 combined with an ADC will
provide the lowest drift data conversion obtainable.
VRE104 series 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 the
VRE104 ideal for all precision applications which may
require a 4.5 V reference. High-accuracy test and
measurement instrumentation, and transducer exci-
tation are some other applications which can benefit
from the high accuracy of the VRE104.
Figure 1. BLOCK DIAGRAM
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