ADR291GRZ-REEL7 datasheet, PDF

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ADR291GRZ-REEL7: DescriptionV-Ref Precision 2.5V 5mA 8-Pin SOIC N T/R; CategoryVoltage reference; File Size293KB，20 Pages; ManufacturerADI; Websitehttps://www.analog.com

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ADR291GRZ-REEL7 Overview

V-Ref Precision 2.5V 5mA 8-Pin SOIC N T/R

ADR291GRZ-REEL7 Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Reference Type	Precision
Topology	Series
Initial Accuracy	0.24%
Maximum Temperature Coefficient	30ppm/°C
Load Regulation	125ppm/mA
Line Regulation	125ppm/V
Output Voltage (V)	2.5
Maximum Input Voltage (V)	18
Maximum Output Current (mA)	5
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Extended Industrial
Packaging	Tape and Reel
Pin Count	8
Standard Package Name	SOP
Supplier Package	SOIC N
Mounting	Surface Mount
Package Height	1.5(Max)
Package Length	5(Max)
Package Width	4(Max)
PCB changed	8
Lead Shape	Gull-wing

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Low Noise Micropower 2.5 V and

4.096 V Precision Voltage References

ADR291/ADR292

FEATURES

Supply range

2.8 V to 15 V, ADR291

4.4 V to 15 V, ADR292

Supply current: 15 μA maximum

Low noise: 8 μV and 12 μV p-p (0.1 Hz to 10 Hz)

High output current: 5 mA

Temperature range: −40°C to +125°C

Pin-compatible with

REF02/REF19x

CONNECTION DIAGRAMS

IN 2

NC = NO CONNECT

Figure 1. 8-Lead SOIC (R-8)

ADR291/

ADR292

TOP VIEW

(Not to Scale)

OUT

00163-002

APPLICATIONS

Portable instrumentation

Precision reference for 3 V and 5 V systems

Analog-to-digital and digital-to-analog converter reference

Solar-powered applications

Loop-current-powered instruments

GND

NC = NO CONNECT

Figure 2. 8-Lead TSSOP (RU-8)

GND

OUT

ADR291

TOP VIEW

(Not to Scale)

00163-003

Figure 3. 3-Lead TO-92 (T-3)

GENERAL DESCRIPTION

The ADR291 and ADR292 are low noise, micropower precision

voltage references that use an XFET® reference circuit. The new

XFET architecture offers significant performance improvements

over traditional band gap and buried Zener-based references.

Improvements include one quarter the voltage noise output of

band gap references operating at the same current, very low and

ultralinear temperature drift, low thermal hysteresis, and

excellent long-term stability.

The ADR291/ADR292 family is a series of voltage references

providing stable and accurate output voltages from supplies as

low as 2.8 V for the ADR291. Output voltage options are 2.5 V

and 4.096 V for the ADR291 and ADR292, respectively.

Quiescent current is only 12 μA, making these devices ideal for

battery-powered instrumentation. Three electrical grades are

available offering initial output accuracies of ±2 mV, ±3 mV,

and ±6 mV maximum for the ADR291, and ±3 mV, ±4 mV,

and ±6 mV maximum for the ADR292. Temperature

coefficients for the three grades are 8 ppm/°C, 15 ppm/°C, and

25 ppm/°C maximum, respectively. Line regulation and load

regulation are typically 30 ppm/V and 30 ppm/mA, maintaining

the reference’s overall high performance. For a device with 5.0 V

output, refer to the

ADR293

data sheet.

The ADR291 and ADR292 references are specified over the

extended industrial temperature range of −40°C to +125°C.

Devices are available in the 8-lead SOIC, 8-lead TSSOP, and

3-lead TO-92 packages.

Table 1. ADR291/ADR292 Product

Output

Voltage (V)

2.500

4.096

Initial

Accuracy (±%)

0.08, 0.12, 0.24

0.07, 0.10, 0.15

Temperature

Coefficient

(ppm/°C) Max

8, 15, 25

Part No.

ADR291

ADR292

Rev. F

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 that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

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

Tel: 781.329.4700

www.analog.com

00163-001

OUT

TOP VIEW

(Not to Scale)

GND

ADR291/

ADR292

ADR291/ADR292

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications ....................................................................................... 1

Connection Diagrams ...................................................................... 1

General Description ......................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

ADR291 Electrical Specifications............................................... 3

ADR292 Electrical Specifications............................................... 4

Absolute Maximum Ratings............................................................ 6

ESD Caution .................................................................................. 6

Pin Configurations and Function Descriptions ........................... 7

Typical Performance Characteristics ............................................. 8

Terminology .................................................................................... 12

Theory of Operation ...................................................................... 13

Device Power Dissipation Considerations .............................. 13

Basic Voltage Reference Connections ..................................... 13

Noise Performance ..................................................................... 13

Turn-On Time ............................................................................ 13

Applications Information .............................................................. 14

High Voltage Floating Current Source .................................... 14

Kelvin Connections .................................................................... 14

Low Power, Low Voltage Reference for Data Converters ..... 14

Voltage Regulator for Portable Equipment ............................. 15

Outline Dimensions ....................................................................... 16

Ordering Guide .......................................................................... 17

REVISION HISTORY

5/11—Rev. E to Rev. F

Deleted Negative Precision Reference Without Precision

Resistors Section ............................................................................. 14

Deleted Figure 33 and Figure 34, Renumbered Sequentially ... 14

Changes to Ordering Guide .......................................................... 17

12/07—Rev. D to Rev. E

Changes to Features.......................................................................... 1

Changes to Figure 34 ...................................................................... 14

3/06—Rev. C to Rev. D

Updated Format .................................................................. Universal

Change to Table 8 ............................................................................. 6

Updated Outline Dimensions ....................................................... 15

Changes to Ordering Guide .......................................................... 16

9/03—Rev. B to Rev. C

Deleted ADR290 ................................................................. Universal

Changes to Specifications .................................................................2

Changes to Ordering Guide .............................................................4

Updated Outline Dimensions ....................................................... 13

Rev. F | Page 2 of 20

ADR291GRZ-REEL7 Related Products

	ADR291GRZ-REEL7	ADR291ERZ	ADR292GRZ-REEL7	ADR292ERZ	ADR292GRZ	ADR292GRUZ
Description	V-Ref Precision 2.5V 5mA 8-Pin SOIC N T/R	V-Ref Precision 2.5V 5mA 8-Pin SOIC N Tube	V-Ref Precision 4.096V 5mA 8-Pin SOIC N T/R	V-Ref Precision 4.096V 5mA 8-Pin SOIC N Tube	V-Ref Precision 4.096V 5mA 8-Pin SOIC N Tube	V-Ref Precision 4.096V 5mA 8-Pin TSSOP Tube
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active	Active	Active
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.31.00.01
Reference Type	Precision	Precision	Precision	Precision	Precision	Precision
Topology	Series	Series	Series	Series	Series	Series
Initial Accuracy	0.24%	0.08%	0.15%	0.07%	0.15%	0.15%
Maximum Temperature Coefficient	30ppm/°C	10ppm/°C	30ppm/°C	10ppm/°C	30ppm/°C	30ppm/°C
Load Regulation	125ppm/mA	100ppm/mA	125ppm/mA	100ppm/mA	125ppm/mA	125ppm/mA
Line Regulation	125ppm/V	100ppm/V	125ppm/V	100ppm/V	125ppm/V	125ppm/V
Output Voltage (V)	2.5	2.5	4.096	4.096	4.096	4.096
Maximum Input Voltage (V)	18	18	18	18	18	18
Maximum Output Current (mA)	5	5	5	5	5	5
Minimum Operating Temperature (°C)	-40	-40	-40	-40	-40	-40
Maximum Operating Temperature (°C)	125	125	125	125	125	125
Supplier Temperature Grade	Extended Industrial	Extended Industrial	Extended Industrial	Extended Industrial	Extended Industrial	Extended Industrial
Packaging	Tape and Reel	Tube	Tape and Reel	Tube	Tube	Tube
Pin Count	8	8	8	8	8	8
Standard Package Name	SOP	SOP	SOP	SOP	SOP	SOP
Supplier Package	SOIC N	SOIC N	SOIC N	SOIC N	SOIC N	TSSOP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	1.5(Max)	1.5(Max)	1.5(Max)	1.5(Max)	1.5(Max)	1.05(Max)
Package Length	5(Max)	5(Max)	5(Max)	5(Max)	5(Max)	3
Package Width	4(Max)	4(Max)	4(Max)	4(Max)	4(Max)	4.4
PCB changed	8	8	8	8	8	8
Lead Shape	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing	Gull-wing

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