PIN CONFIGURATIONS

8-Lead Narrow Body SO

(R Suffix)

1

2

3

4

8

7

6

5

TOP VIEW

(Not to Scale)

ADR293

GND

NC

NC

NC

NC

NC

NC = NO CONNECT

8-Lead TSSOP

(RU Suffix)

1

2

3

4

8

7

6

5

TOP VIEW

(Not to Scale)

ADR293

GND

NC

NC

NC

NC

NC

NC = NO CONNECT

3-Lead TO-92

(T9 Suffix)

PIN 1

PIN 2

GND

PIN 3

BOTTOM VIEW

REV. 0

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

a

Low Noise Micropower

Precision Voltage Reference

ADR293

FEATURES

Voltage Output 5.0 V

6.0 V to 15 V Supply Range

Supply Current 15

A Max

Initial Accuracy

3 mV Max

Temperature Coefficient 8 ppm/ C Max

Low Noise 15

V p–p Typ (0.1 Hz to 10 Hz)

High Output Current 5 mA Min

Temperature Range

40 C to

125 C

REF02/REF19x Pinout

APPLICATIONS

Portable Instrumentation

Precision Reference for 5 V Systems

A/D and D/A Converter Reference

Solar Powered Applications

Loop-Current Powered Instruments

GENERAL DESCRIPTION

The ADR293 is a low noise, micropower precision voltage

FET) reference circuit. The new XFET architecture offers sig-

nificant performance improvements over traditional bandgap

and Zener-based references. Improvements include: one quarter

the voltage noise output of bandgap references operating at the

same current, very low and ultralinear temperature drift, low

thermal hysteresis and excellent long-term stability.

The ADR293 is a series voltage reference providing stable and

accurate output voltage from a 6.0 V supply. Quiescent current

is only 15

µA max, making this device ideal for battery powered

instrumentation. Three electrical grades are available offering

initial output accuracy of

±3 mV, ±6 mV, and ±10 mV. Tem-

perature coefficients for the three grades are 8 ppm/

°C, 15 ppm/°C

and 25 ppm/

°C max. Line regulation and load regulation are typi-

cally 30 ppm/V and 30 ppm/mA, maintaining the reference’s over-

all high performance.

The ADR293 is specified over the extended industrial tempera-

ture range of –40

°C to +125°C. This device is available in the

8-lead SOIC, 8-lead TSSOP and the TO-92 package.

XFET is a trademark of Analog Devices, Inc.

Part Number

Nominal Output Voltage (V)

ADR290

2.048

ADR291

2.500

ADR292

4.096

ADR293

5.000

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

World Wide Web Site: http://www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 1998