ANALOG DEVICES ADR5045 Service Manual

Precision Micropower Shunt Mode

A

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ADR5040/ADR5041/ADR5043/ADR5044/ADR5045

FEATURES

Ultracompact SC70 and SOT-23 packages
Low temperature coefficient: 75 ppm/°C (maximum)
Pin compatible with LM4040/LM4050
Initial accuracy: ±0.1%
No external capacitor required
Wide operating current range: 50 μA to 15 mA
Extended temperature range: −40°C to +125°C

APPLICATIONS

Portable, battery-powered equipment
Automotives
Power supplies
Data acquisition systems
Instrumentation and process control
Energy management

GENERAL DESCRIPTION

Designed for space-critical applications, the ADR5040/
ADR5041/ADR5043/ADR5044/ADR5045 are high precision
shunt voltage references, housed in ultrasmall SC70 and SOT-23
packages. These voltage references are multipurpose, easy-to-use
references that can be used in a vast array of applications. They
feature low temperature drift, an initial accuracy of better than

0.1%, and fast settling time.

Available in output voltages of 2.048 V, 2.5 V, 3.0 V, 4.096 V, and

, the advanced design of the ADR5040/ADR5041/ADR5043/

5.0 V
ADR5044/ADR5045 eliminates the need for compensation by an
external capacitor, yet the references are stable with any capacitive
load. The minimum operating current increases from 50 μA to
a maximum of 15 mA. This low operating current and ease of use
make these references ideally suited for handheld, battery-powered
applications. This family of references has been characterized
over the extended temperature range of −40°C to +125°C.

Voltage References

PIN CONFIGURATION

DR5040/ADR5041/

ADR5043/ADR5044/

ADR5045

V+ 1

NC3

2

V–

NOTES

1. NC = NO CONNECT .

2. PIN 3 MUST BE LEFT FLOATING OR
CONNECTED TO GROUND.

Figure 1. 3-Lead SC70 (KS) and 3-Lead SOT-23 (RT)

Table 1. Selection Table

Initial
A

Part Voltage (V)

ADR5040A 2.048 ±0.2 100
ADR5040B 2.048 ±0.1 75
ADR5041A 2.5 ±0.2 100
ADR5041B 2.5 ±0.1 75
ADR5043A 3.0 ±0.2 100
ADR5043B 3.0 ±0.1 75
ADR5044A 4.096 ±0.2 100
ADR5044B 4.096 ±0.1 75
ADR5045A 5.0 ±0.2 100
ADR5045B 5.0 ±0.1 75

ccuracy (%)

06526-001

Temperature
C

oefficient

(ppm/°C)

Rev. A

Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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: [phone] www.analog.com
Fax: [phone] ©2007 Analog Devices, Inc. All rights reserved.

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TABLE OF CONTENTS

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

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

Pin Configuration............................................................................. 1

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

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

Specifications..................................................................................... 4

ADR5040 Electrical Characteristics .......................................... 4

ADR5041 Electrical Characteristics .......................................... 4

ADR5043 Electrical Characteristics .......................................... 5

ADR5044 Electrical Characteristics .......................................... 5

REVISION HISTORY

12/07—Rev. 0 to Rev. A

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

Changes to Initial Accuracy and Temperature Coefficient

Parameters in Table 2 Through Table 6 ......................................... 3

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

Changes to Ordering Guide.......................................................... 13

1/07—Revision 0: Initial Version

ADR5045 Electrical Characteristics ...........................................6

Absolute Maximum Ratings ............................................................7

Thermal Resistance.......................................................................7

ESD Caution...................................................................................7

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

Terminology .................................................................................... 11

Theory of Operation ...................................................................... 12

Applications Information.......................................................... 12

Outline Dimensions....................................................................... 14

Ordering Guide .......................................................................... 14

Rev. A | Page 2 of 17

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SPECIFICATIONS

ADR5040 ELECTRICAL CHARACTERISTICS

IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V

OUT

Grade A 2.044 2.048 2.052 V
Grade B 2.046 2.048 2.050 V

INITIAL ACCURACY V

IIN = 100 μA

OERR

Grade A –4.096 +4.096 mV

±0.2 %

Grade B –2.048 +2.048 mV
±0.1 %
TEMPERATURE COEFFICIENT1 TCV

–40°C < TA < +125°C

OUT

Grade A 10 100 ppm/°C

Grade B 10 75 ppm/°C
OUTPUT VOLTAGE CHANGE vs. IIN ∆VR I
–40°C < TA < +125°C 0.4 1.75 mV
I
–40°C < TA < +125°C 4 8 mV
DYNAMIC OUTPUT IMPEDANCE (∆VR/∆IR) IIN = 50 μA to 15 mA 0.2 Ω
MINIMUM OPERATING CURRENT I

T

IN

–40°C < TA < +125°C 60 μA
VOLTAGE NOISE eN I
I
TURN-ON SETTLING TIME tR C
OUTPUT VOLTAGE HYSTERESIS ∆V

1

Guaranteed by design.

IIN = 1 mA 40 ppm

OUT_HYS

IIN = 100 μA

= 50 μA to 1 mA

IN

= 1 mA to 15 mA

IN

= 25°C 50 μA

A

= 100 μA; 0.1 Hz to 10 Hz 2.8 μV rms

IN

= 100 μA; 10 Hz to 10 kHz 120 μV rms

IN

= 0 μF 28 μs

LOAD

ADR5041 ELECTRICAL CHARACTERISTICS

IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.

Table 3.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V

Grade A 2.495 2.500 2.505 V

Grade B 2.4975 2.500 2.5025 V
INITIAL ACCURACY V

Grade A –5 +5 mV

±0.2 %

Grade B –2.5 +2.5 mV
±0.1 %
TEMPERATURE COEFFICIENT

1

Grade A 10 100 ppm/°C

Grade B 10 75 ppm/°C
OUTPUT VOLTAGE CHANGE vs. IIN ∆VR I
–40°C < TA < +125°C 0.5 1.8 mV
I
–40°C < TA < +125°C 4 8 mV

I

OUT

IIN = 100 μA

OERR

TCV

–40°C < TA < +125°C

OUT

= 100 μA

IN

= 50 μA to 1 mA

IN

= 1 mA to 15 mA

IN

Rev. A | Page 3 of 16

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Parameter Symbol Conditions Min Typ Max Unit

DYNAMIC OUTPUT IMPEDANCE (∆VR/∆IR) IIN = 50 μA to 15 mA 0.2 Ω
MINIMUM OPERATING CURRENT IIN TA = 25°C 50 μA
–40°C < TA < +125°C 60 μA
VOLTAGE NOISE eN I
I
TURN-ON SETTLING TIME tR C
OUTPUT VOLTAGE HYSTERESIS ∆V

1

Guaranteed by design.

IIN = 1 mA 40 ppm

OUT_HYS

ADR5043 ELECTRICAL CHARACTERISTICS

IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.

Table 4.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V

IIN = 100 μA

OUT

Grade A 2.994 3.000 3.006 V
Grade B 2.997 3.000 3.003 V

INITIAL ACCURACY V

IIN = 100 μA

OERR

Grade A –6 +6 mV
±0.2 %

Grade B –3 +3 mV
±0.1 %
TEMPERATURE COEFFICIENT

1

TCV

–40°C < TA < +125°C

OUT

Grade A 10 100 ppm/°C

Grade B 10 75 ppm/°C
OUTPUT VOLTAGE CHANGE vs. IIN ∆VR IIN = 50 μA to 1 mA
–40°C < TA < +125°C 0.7 2.2 mV
I
–40°C < TA < +125°C 4 8 mV
DYNAMIC OUTPUT IMPEDANCE (∆VR/∆IR) IIN = 50 μA to 15 mA 0.2 Ω
MINIMUM OPERATING CURRENT IIN TA = 25°C 50 μA
–40°C < TA < +125°C 60 μA
VOLTAGE NOISE eN I
I
TURN-ON SETTLING TIME tR C
OUTPUT VOLTAGE HYSTERESIS ∆V

1

Guaranteed by design.

IIN = 1 mA 40 ppm

OUT_HYS

ADR5044 ELECTRICAL CHARACTERISTICS

IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.

= 100 μA; 0.1 Hz to 10 Hz 3.2 μV rms

IN

= 100 μA; 10 Hz to 10 kHz 150 μV rms

IN

= 0 μF 35 μs

LOAD

= 1 mA to 15 mA

IN

= 100 μA; 0.1 Hz to 10 Hz 4.3 μV rms

IN

= 100 μA; 10 Hz to 10 kHz 180 μV rms

IN

= 0 μF 42 μs

LOAD

Table 5.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V

I

OUT

= 100 μA

IN

Grade A 4.088 4.096 4.104 V

Grade B 4.092 4.096 4.100 V
INITIAL ACCURACY V

IIN = 100 μA

OERR

Grade A –8.192 +8.192 mV

±0.2 %

Grade B –4.096 +4.096 mV
±0.1 %

Rev. A | Page 4 of 16

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Parameter Symbol Conditions Min Typ Max Unit

TEMPERATURE COEFFICIENT

Grade A 10 100 ppm/°C

Grade B 10 75 ppm/°C
OUTPUT VOLTAGE CHANGE vs. IIN ∆VR IIN = 50 μA to 1 mA
–40°C < TA < +125°C 0.7 3 mV
I
–40°C < TA < +125°C 4 8 mV
DYNAMIC OUTPUT IMPEDANCE (∆VR/∆IR) IIN = 50 μA to 15 mA 0.2 Ω
MINIMUM OPERATING CURRENT I
–40°C < TA < +125°C 60 μA
VOLTAGE NOISE eN I
I
TURN-ON SETTLING TIME tR C
OUTPUT VOLTAGE HYSTERESIS ∆V

1

Guaranteed by design.

ADR5045 ELECTRICAL CHARACTERISTICS

IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.

Table 6.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V

Grade A 4.990 5.000 5.010 V

Grade B 4.995 5.000 5.005 V
INITIAL ACCURACY V

Grade A –10 +10 mV

±0.2 %

Grade B –5 +5 mV
±0.1 %
TEMPERATURE COEFFICIENT

Grade A 10 100 ppm/°C

Grade B 10 75 ppm/°C
OUTPUT VOLTAGE CHANGE vs. IIN ∆VR IIN = 50 μA to 1 mA
–40°C < TA < +125°C 0.8 4 mV
I
–40°C < TA < +125°C 4 8 mV
DYNAMIC OUTPUT IMPEDANCE (∆VR/∆IR) IIN = 50 μA to 15 mA 0.2 Ω
MINIMUM OPERATING CURRENT IIN TA = 25°C 50 μA
–40°C < TA < +125°C 60 μA
VOLTAGE NOISE eN I
I
TURN-ON SETTLING TIME tR C
OUTPUT VOLTAGE HYSTERESIS ∆V

1

Guaranteed by design.

1

1

TCV

–40°C < TA < +125°C

OUT

= 1 mA to 15 mA

IN

T

IN

I

OUT_HYS

OUT

IIN = 100 μA

OERR

TCV

–40°C < TA < +125°C

OUT

IIN = 1 mA 40 ppm

OUT_HYS

= 25°C 50 μA

A

= 100 μA; 0.1 Hz to 10 Hz 5.4 μV rms

IN

= 100 μA; 10 Hz to 10 kHz 240 μV rms

IN

= 0 μF 56 μs

LOAD

= 1 mA 40 ppm

IN

IIN = 100 μA

= 1 mA to 15 mA

IN

= 100 μA; 0.1 Hz to 10 Hz 6.6 μV rms

IN

= 100 μA; 10 Hz to 10 kHz 280 μV rms

IN

= 0 μF 70 μs

LOAD

Rev. A | Page 5 of 16