REV. A

Precision Low Power 2.048 V

SOT-23 Voltage Reference

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© 2003 Analog Devices, Inc. All rights reserved.

*Protected by U.S.Patent No. 5,969,657; other patents pending.

PIN CONFIGURATION

3-Lead SOT-23

1

3

2

ADR370

GND

Table I. ADR370 Products

Output

Initial

Temperature

Voltage

Accuracy

Coefficent

Products

(mV) (%)

(ppm/

°C)

ADR370BRT-REEL7

2.048

4

0.2

50

ADR370ART-REEL7

2.048

10

0.5

100

FEATURES

Initial Accuracy:

4 mV Max

Initial Accuracy Error:

0.2%

Low TCVO:

50 ppm/ C Max from –40 C to +125 C,

30 ppm/ C Max from +25 C to +70 C

Load Regulation: 200

V/mA, 100 ppm/mA

Line Regulation: 25

V/V, 20 ppm/V

Low Power: 72

A Max

High Output Sink/Source Current:

5 mA Min

Wide Temperature Range: –40 C to +125 C

Tiny 3-Lead SOT-23 Package with Standard Pinout

APPLICATIONS

Battery-Powered Instrumentation

Portable Medical Instruments

Data Acquisition Systems

Industrial Process Control Systems

Automotive

GENERAL DESCRIPTION

The ADR370 is a low cost, 3-terminal (series) band-gap voltage

reference featuring high accuracy, high stability, and low power

consumption packaged in a tiny 3-lead SOT-23 package. Precise

matching and thermal tracking of on-chip components, as well as

patented temperature drift curvature correction design techniques,

have been employed to ensure that the ADR370 provides an

accurate 2.048 V output.

This micropowered, low dropout voltage device will source or

sink up to 5 mA of load current while providing a stable 2.048 V

output. The compact footprint, high accuracy, and an operating

range of 2.3 V to 12 V make the ADR370 ideal for use in 3 V

and 5 V systems where there may be wide variations in supply

voltage and a need to minimize power dissipation.

The ADR370 is offered in A and B grades; all devices are specified

over the extended industrial range of –40

°C to +125°C.