REF194 Analog Devices, REF194 Datasheet

REF194

Manufacturer Part Number

REF194

Description

Manufacturer

Analog Devices

Datasheet

1.REF194.pdf (23 pages)

Specifications of REF194

Case

SOP-8

Date_code

06+

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GENERAL DESCRIPTION

REF19x series precision bandgap voltage references use a pat-

ented temperature drift curvature correction circuit and laser

trimming of highly stable thin film resistors to achieve a very low

temperature coefficient and a high initial accuracy.

The REF19x series are micropower, Low Dropout Voltage

(LDV) devices providing a stable output voltage from supplies

as low as 100 mV above the output voltage and consuming less

than 45 A of supply current. In sleep mode, which is enabled

by applying a low TTL or CMOS level to the sleep pin, the

output is turned off and supply current is further reduced to less

than 15 A.

The REF19x series references are specified over the extended

industrial temperature range (–40 C to +85 C) with typical

performance specifications over –40 C to +125 C for applica-

tions such as automotive.

All electrical grades are available in 8-Lead SOIC; the PDIP and

TSSOP are only available in the lowest electrical grade. Prod-

ucts are also available in die form.

Test Pins (TP)

The test pins, Pin 1 and Pin 5, are reserved for in-package

zener-zap. To achieve the highest level of accuracy at the out-

put, the zener-zapping technique is used to trim the output

voltage. Since each unit may require a different amount of ad-

justment, the resistance value at the test pins will vary widely

from pin-to-pin as well as from part-to-part. The user should

not make any physical nor electrical connections to Pin 1 and

Pin 5.

REV. D

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.

FEATURES

Initial Accuracy:

Temperature Coefficient: 5 ppm/ C max

Low Supply Current: 45 A max

Sleep Mode: 15 A max

Low Dropout Voltage

Load Regulation: 4 ppm/mA

Line Regulation: 4 ppm/V

High Output Current: 30 mA

Short Circuit Protection

APPLICATIONS

Portable Instrumentation

A-to-D and D-to-A Converters

Smart Sensors

Solar Powered Applications

Loop Current Powered Instrumentations

2 mV max

Precision Micropower, Low Dropout,

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

Tel: 781/329-4700

Fax: 781/326-8703

Model

REF19xGP

REF19xES

REF19xFS

REF19xGS

REF19xGRU –40 C to +85 C

REF19xGBC +25 C

NOTES

N = Plastic DIP, SO = Small Outline, RU = Thin Shrink Small Outline.

8-Lead plastic DIP only available in “G” grade.

REF193 and REF196 are available in “G” grade only.

Part Number

REF191

REF192

REF193

REF194

REF195

REF196

REF198

8-Lead Narrow-Body SO and TSSOP

Temperature

Range

–40 C to +85 C

SLEEP

8-Lead Epoxy DIP (P Suffix)

NC = NO CONNECT

TP PINS ARE FACTORY TEST POINTS

NO USER CONNECTION

PIN CONFIGURATIONS

GND

(S Suffix and RU Suffix)

ORDERING GUIDE

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

Voltage References

(Not to Scale)

Nominal Output Voltage (V)

2.048

2.50

3.00

4.50

5.00

3.30

4.096

TOP VIEW

REF19x

SERIES

REF19x

SERIES

Table I

REF19x Series

Package

Description

8-Lead Plastic DIP

8-Lead SOIC

8-Lead TSSOP

DICE

OUTPUT

Package

Option

N-8

SO-8

RU-8

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