ANALOG DEVICES ADR390, ADR392, ADR395 Service Manual

Micropower, Low Noise Precision Voltage

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FEATURES

Compact 5-lead TSOT packages
Low temperature coefficient

B grade: 9 ppm/°C
A grade: 25 ppm/°C

Initial accuracy

B grade: ±4 mV maximum (ADR390)

A grade: ±6 mV maximum
Ultralow output noise: 5 μV p-p (0.1 Hz to 10 Hz)
Low dropout: 300 mV
Low supply current

3 μA maximum in shutdown

120 μA maximum in operation
No external capacitor required
Output current: 5 mA
Wide temperature range: −40°C to +125°C

APPLICATIONS

Battery-powered instrumentation
Portable medical instrumentation
Data acquisition systems
Industrial process controls
Automotive

References with Shutdown

ADR390/ADR391/ADR392/ADR395

PIN CONFIGURATION

ADR390/

1

SHDN

V

OUT (SENSE)

ADR391/

V

2

IN

ADR392/

ADR395

3

(Not to Scale)

Figure 1. 5-Lead TSOT (UJ Suffix)

Table 1.

Output

Model

ADR390B 2.048 9 ±4
ADR390A 2.048 25 ±6
ADR391B 2.5 9 ±4
ADR391A 2.5 25 ±6
ADR392B 4.096 9 ±5
ADR392A 4.096 25 ±6
ADR395B 5.0 9 ±5
ADR395A 5.0 25 ±6

Voltage (VO)

5

GND

V

4

OUT (FORCE)

Temperature
Coefficient
(ppm/°C)

00419-001

Accuracy
(mV)

GENERAL DESCRIPTION

The ADR390/ADR391/ADR392/ADR395 are precision 2.048 V,

2.5 V, 4.096 V, and 5 V band gap voltage references, respectively,
featuring low power and high precision in a tiny footprint. Using
patented temperature drift curvature correction techniques
from Analog Devices, Inc., the ADR39x references achieve a
low 9 ppm/°C of temperature drift in the TSOT package.

Rev. G

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.

The ADR39x family of micropower, low dropout voltage
references provides a stable output voltage from a minimum
supply of 300 mV above the output. Their advanced design
eliminates the need for external capacitors, which further
reduces board space and system cost. The combination of
low power operation, small size, and ease of use makes the
ADR39x precision voltage references ideally suited for battery­operated applications.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] www.analog.com
Fax: [phone] ©2002–2008 Analog Devices, Inc. All rights reserved.

ADR390/ADR391/ADR392/ADR395

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TABLE OF CONTENTS

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

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

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

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

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

ADR390 Electrical Characteristics ............................................. 3

ADR391 Electrical Characteristics ............................................. 4

ADR392 Electrical Characteristics ............................................. 5

ADR395 Electrical Characteristics ............................................. 6

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

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

REVISION HISTORY

2/08—Rev. F to Rev. G

Changes to Ripple Rejection Ration Parameter (Table 2) ........... 3

Changes to Ripple Rejection Ration Parameter (Table 3) ........... 4

Changes to Ripple Rejection Ration Parameter (Table 4) ........... 5

Changes to Ripple Rejection Ration Parameter (Table 5) ........... 6

Changes to Figure 7 .......................................................................... 9

Changes to Outline Dimensions ................................................... 19

Changes to Ordering Guide .......................................................... 19

5/05—Rev. E to Rev. F

Changes to Table 5 ........................................................................... 7

Changes to Figure 2 ......................................................................... 9

4/04—Rev. D to Rev. E

Changes to ADR390—Specifications ............................................ 3

Changes to ADR391—Specifications ............................................ 4

Changes to ADR392—Specifications ............................................ 5

Changes to ADR395—Specifications ............................................ 6

4/04—Rev. C to Rev. D

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

Changes to Title ............................................................................... 1

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

Changes to Applications ................................................................. 1

Changes to General Description ................................................... 1

Changes to Table 1 ........................................................................... 1

Changes to ADR390—Specifications ............................................ 3

Changes to ADR391—Specifications ............................................ 4

Changes to ADR392—Specifications ............................................ 5

Changes to ADR395—Specifications ............................................ 6

Changes to Absolute Maximum Ratings ...................................... 7

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

Terminology .......................................................................................8

Typical Performance Characteristics ..............................................9

Theory of Operation ...................................................................... 16

Device Power Dissipation Considerations .............................. 16

Shutdown Mode Operation ...................................................... 16

Applications Information .............................................................. 17

Basic Voltage Reference Connection ....................................... 17

Capacitors .................................................................................... 18

Outline Dimensions ....................................................................... 19

Ordering Guide .......................................................................... 19

Changes to Thermal Resistance..................................................... 7

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

Changes to Figure 3, Figure 4, Figure 7, and Figure 8 ................ 9

Changes to Figure 11, Figure 12, Figure 13, and Figure 14...... 10

Changes to Figure 15, Figure 16, Figure 19, and Figure 20...... 11

Changes to Figure 23 and Figure 24............................................ 12

Changes to Figure 27 ..................................................................... 13

Changes to Ordering Guide ......................................................... 19

Updated Outline Dimensions ...................................................... 19

10/02—Rev. B to Rev. C

Add parts ADR392 and ADR395 .................................... Universal

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

Changes to General Description ................................................... 1

Additions to Table I ......................................................................... 1

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

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

Changes to Absolute Maximum Ratings ...................................... 4

New TPCs 3, 4, 7, 8, 11, 12, 15, 16, 19, and 20 ............................ 6

New Figures 4 and 5 ...................................................................... 13

Deleted A Negative Precision Reference

without Precision Resistors Section ............................................ 13

Edits to General-Purpose Current Source Section ................... 13

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

5/02—Rev. A to Rev. B

Edits to Layout ................................................................... Universal

Changes to Figure 6 ....................................................................... 13

Rev. G | Page 2 of 20

ADR390/ADR391/ADR392/ADR395

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SPECIFICATIONS

ADR390 ELECTRICAL CHARACTERISTICS

VIN = 2.5 V to 15 V, TA = 25°C, unless otherwise noted.

Table 2.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE V
V
INITIAL ACCURACY V
V
V
V

O

B grade 2.044 2.048 2.052 V

O

OERR

A grade 0.29 %

OERR

B grade 4 mV

OERR

B grade 0.19 %

OERR

TEMPERATURE COEFFICIENT TCVO A grade: −40°C < TA < +125°C 25 ppm/°C

SUPPLY VOLTAGE HEADROOM VIN − VO 300 mV
LINE REGULATION ∆VO/∆VIN VIN = 2.5 V to 15 V, −40°C < TA < +125°C 10 25 ppm/V
LOAD REGULATION ∆VO/∆I

QUIESCENT CURRENT IIN No load 120 μA

VOLTAGE NOISE e

0.1 Hz to 10 Hz 5 μV p-p

np-p

TURN-ON SETTLING TIME tR 20 μs
LONG-TERM STABILITY
OUTPUT VOLTAGE HYSTERESIS ∆V

1

∆VO 1000 hours 50 ppm

O_HYS

RIPPLE REJECTION RATIO RRR fIN = 60 Hz −80 dB
SHORT CIRCUIT TO GND ISC V

SHUTDOWN PIN

Shutdown Supply Current I

Shutdown Logic Input Current I

Shutdown Logic Low V

Shutdown Logic High V

1

The long-term stability specification is noncumulative. The drift of subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.

3 μA

SHDN

500 nA

LOGI C

0.8 V

INL

2.4 V

INH

A grade 2.042 2.048 2.054 V

A grade 6 mV

B grade: −40°C < TA < +125°C 9 ppm/°C

I

LOAD

= 0 mA to 5 mA, −40°C < TA < +85°C, VIN = 3 V 60 ppm/mA

LOAD

I

= 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 3 V 140 ppm/mA

LOAD

−40°C < TA < +125°C 140 μA

100 ppm

= 5 V 25 mA

IN

VIN = 15 V 30 mA

Rev. G | Page 3 of 20

ADR390/ADR391/ADR392/ADR395

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ADR391 ELECTRICAL CHARACTERISTICS

VIN = 2.8 V to 15 V, TA = 25°C, unless otherwise noted.

Table 3.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE VO A grade 2.494 2.5 2.506 V
V
INITIAL ACCURACY V

V
V
TEMPERATURE COEFFICIENT TCVO A grade, −40°C < TA < +125°C 25 ppm/°C

SUPPLY VOLTAGE HEADROOM VIN − VO 300 mV
LINE REGULATION ∆VO/∆VIN VIN = 2.8 V to 15 V, −40°C < TA < +125°C 10 25 ppm/V
LOAD REGULATION ∆VO/∆I

QUIESCENT CURRENT IIN No load 120 μA

VOLTAGE NOISE e
TURN-ON SETTLING TIME tR 20 μs
LONG-TERM STABILITY

1

OUTPUT VOLTAGE HYSTERESIS ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −80 dB
SHORT CIRCUIT TO GND ISC V

SHUTDOWN PIN

Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

1

The long-term stability specification is noncumulative. The drift of subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.

B grade 2.496 2.5 2.504 V

O

A grade 6 mV

OERR

V

A grade 0.24 %

OERR

B grade 4 mV

OERR

B grade 0.16 %

OERR

B grade, −40°C < TA < +125°C 9 ppm/°C

I

LOAD

= 0 mA to 5 mA, −40°C < TA < +85°C, VIN = 3 V 60 ppm/mA

LOAD

I

= 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 3 V 140 ppm/mA

LOAD

−40°C < TA < +125°C 140 μA

0.1 Hz to 10 Hz 5 μV p-p

np-p

∆VO 1000 hours 50 ppm

100 ppm

O_HYS

= 5 V 25 mA

IN

VIN = 15 V 30 mA

3 μA

SHDN

500 nA

LOGI C

0.8 V

INL

2.4 V

INH

Rev. G | Page 4 of 20

ADR390/ADR391/ADR392/ADR395

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ADR392 ELECTRICAL CHARACTERISTICS

VIN = 4.3 V to 15 V, TA = 25°C, unless otherwise noted.

Table 4.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE VO A grade 4.090 4.096 4.102 V
V
INITIAL ACCURACY V

V
V
TEMPERATURE COEFFICIENT TCVO A grade, −40°C < TA < +125°C 25 ppm/°C

SUPPLY VOLTAGE HEADROOM VIN − VO 300 mV
LINE REGULATION ∆VO/∆VIN VIN = 4.3 V to 15 V, −40°C < TA < +125°C 10 25 ppm/V
LOAD REGULATION ∆VO/∆I
QUIESCENT CURRENT IIN No load 120 μA

VOLTAGE NOISE e
TURN-ON SETTLING TIME tR 20 μs
LONG-TERM STABILITY

1

OUTPUT VOLTAGE HYSTERESIS ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −80 dB
SHORT CIRCUIT TO GND ISC V

SHUTDOWN PIN

Shutdown Supply Current I

Shutdown Logic Input Current I

Shutdown Logic Low V

Shutdown Logic High V

1

The long-term stability specification is noncumulative. The drift of subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.

B grade 4.091 4.096 4.101 V

O

A grade 6 mV

OERR

V

A grade 0.15 %

OERR

B grade 5 mV

OERR

B grade 0.12 %

OERR

B grade, −40°C < TA < +125°C 9 ppm/°C

I

LOAD

= 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 5 V 140 ppm/mA

LOAD

−40°C < TA < +125°C 140 μA

0.1 Hz to 10 Hz 7 μV p-p

np-p

∆VO 1000 hours 50 ppm

100 ppm

O_HYS

= 5 V 25 mA

IN

VIN = 15 V 30 mA

3 μA

SHDN

500 nA

LOGI C

0.8 V

INL

2.4 V

INH

Rev. G | Page 5 of 20

ADR390/ADR391/ADR392/ADR395

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ADR395 ELECTRICAL CHARACTERISTICS

VIN = 5.3 V to 15 V, TA = 25°C, unless otherwise noted.

Table 5.

Parameter Symbol Conditions Min Typ Max Unit

OUTPUT VOLTAGE VO A grade 4.994 5.000 5.006 V
V
INITIAL ACCURACY V

V
V
TEMPERATURE COEFFICIENT TCVO A grade, −40°C < TA < +125°C 25 ppm/°C

SUPPLY VOLTAGE HEADROOM VIN − VO 300 mV
LINE REGULATION ∆VO/∆VIN VIN = 4.3 V to 15 V, −40°C < TA < +125°C 10 25 ppm/V
LOAD REGULATION ∆VO/∆I
QUIESCENT CURRENT IIN No load 120 μA

VOLTAGE NOISE e
TURN-ON SETTLING TIME tR 20 μs
LONG-TERM STABILITY

1

OUTPUT VOLTAGE HYSTERESIS ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −80 dB
SHORT CIRCUIT TO GND ISC V

SHUTDOWN PIN

Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

1

The long-term stability specification is noncumulative. The drift of subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.

B grade 4.995 5.000 5.005 V

O

A grade 6 mV

OERR

V

A grade 0.12 %

OERR

B grade 5 mV

OERR

B grade 0.10 %

OERR

B grade, −40°C < TA < +125°C 9 ppm/°C

I

LOAD

= 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 6 V 140 ppm/mA

LOAD

−40°C < TA < +125°C 140 μA

0.1 Hz to 10 Hz 8 μV p-p

np-p

∆VO 1000 hours 50 ppm

100 ppm

O_HYS

= 5 V 25 mA

IN

VIN = 15 V 30 mA

3 μA

SHDN

500 nA

LOGI C

0.8 V

INL

2.4 V

INH

Rev. G | Page 6 of 20