VRE202_1 CIRRUS [Cirrus Logic], VRE202_1 Datasheet

VRE202_1

Manufacturer Part Number

VRE202_1

Description

Precision Voltage Reference

Manufacturer

CIRRUS [Cirrus Logic]

Datasheet

1.VRE202_1.pdf (4 pages)

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FEATURES

♦ Very High Accuracy: +2.5 V Output, ±300 µV

♦ Extremely Low Drift: 0.73 ppm/°C (25°C to

♦ 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-

SELECTION GUIDE

VRE202DS

VRE202C

VRE202CA

+85°C)

ments

www.cirrus.com

Model

P r o d u c t I n n o v a t i o n F r o m

VRE202

Output (V)

+2.5V

Precision Voltage Reference

Figure 1. BLOCK DIAGRAM

Operating Range

-25°C to +85°C

Temperature

Volt Deviation

DESCRIPTION

VRE202 Series Precision Voltage References provide

ultrastable +2.5 V outputs 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 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.

±250µV

±200µV

(MAX)

20-terminal Ceramic LCC

APEX − VRE202DSREVI

Package Style HD

VRE202

NOV 2009

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VRE202_1 Summary of contents

VRE202 1. CHARACTERISTICS AND SPECIFICATIONS ELECTRICAL SPECIFICATIONS V =+15V +25° 10KΩ UNLESS OTHERWISE NOTED Grade Parameter Min ABSOLUTE MAXIMUM RATINGS Power Supply +13.5 Operating Temperature -25 Storage Temperature -65 Short Circuit Protection OUTPUT VOLTAGE ...

Page 3

TYPICAL PERFORMANCE CURVES V vs. TEMPERATURE OUT 0.25 -0.25 Temperature VRE202C QUIESCENT CURRENT VS. TEMP Temperature o C ...

Page 4

VRE202 4. APPLICATION INFORMATION The proper connection of the VRE202 series voltage references with the optional trim resistors is shown below. Pay careful attention to the circuit layout to avoid noise pickup and voltage drops in the lines. The VRE202 ...

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VRE202_1 CIRRUS [Cirrus Logic], VRE202_1 Datasheet

VRE202_1

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VRE202_1 Summary of contents

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