Analog Devices ADR391, ADR390 Datasheet

Precision Low Drift 2.048 V/2.500 V

a

FEATURES
Initial Accuracy: ⴞ6 mV Max
Low TCV
Load Regulation: 60 ppm/mA
Line Regulation: 25 ppm/V
Wide Operating Range:

2.4 V–18 V for ADR390

2.8 V–18 V for ADR391
Low Power: 120 ␮A Max
Shutdown to Less than 3 ␮A Max
High Output Current: 5 mA Min
Wide Temperature Range: ⴚ40ⴗC to +85ⴗC
Tiny SOT-23-5 Package

APPLICATIONS
Battery-Powered Instrumentation
Portable Medical Instruments
Data Acquisition Systems
Industrial and Process Control Systems
Hard Disk Drives
Automotive

: 25 ppm/ⴗC Max

O

SOT-23 Voltage References with Shutdown

ADR390/ADR391

PIN CONFIGURATION

5-Lead SOT-23

(RT Suffix)

1

SHDN

V

OUT(SENSE)

ADR390/

V

2

IN

ADR391

3

Table I.

Part Number Nominal Output Voltage (V)

ADR390 2.048
ADR391 2.500

5

GND

4

V

OUT(FORCE)

GENERAL DESCRIPTION

The ADR390 and ADR391 are precision 2.048 V and 2.5 V
bandgap voltage references featuring high accuracy and stability
and low power consumption in a tiny footprint. Patented tempera­ture drift curvature correction techniques minimize nonlinearity of
the voltage change with temperature. The wide operating range
and low power consumption with additional shutdown capability
make them ideal for 3 V to 5 V battery-powered applications. The

Sense Pin enables greater accuracy by supporting full Kelvin

V

OUT

operation in systems using very fine or long circuit traces.

The ADR390 and ADR391 are micropower, Low Dropout Voltage
(LDV) devices that provide a stable output voltage from supplies as
low as 300 mV above the output voltage. They are specified over the
industrial (–40°C to +85°C) temperature range. Each is available
in the tiny 5-lead SOT-23 package.

The combination of V

sense and shutdown functions also

OUT

enables a number of unique applications combining precision
reference/regulation with fault decision and over-current protec­tion. Details are provided in the applications section.

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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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 2000

ADR390/ADR391

ADR390 SPECIFICATIONS

ELECTRICAL CHARACTERISTICS

(@ VIN = 5 V, TA = 25ⴗC unless otherwise noted)

Parameter Symbol Conditions Min Typ Max Unit

Initial Accuracy V
Initial Accuracy Error V
Temperature Coefficient TCV
Minimum Supply Voltage Headroom V
Line Regulation ∆V

Load Regulation ∆V

Quiescent Current I

Voltage Noise e
Turn-On Settling Time t
Long-Term Stability
Output Voltage Hysteresis

1

2

Ripple Rejection Ratio RRR f
Short Circuit to GND I
Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

NOTES

1

Long-term stability, typical shift in value of output voltage at 25°C on a sample of parts subjected to operation life test of 1000 hours at 125°C. ∆VO = VO (t0) –V
(t

); VO (t0) = VO at 25°C at time 0; VO (t

1000

2

Output Voltage Hysteresis, is defined as the change in 25°C output voltage before and after the device is cycled through temperature. +25 °C to –40°C to +85°C to
+25°C. This is a typical value from a sample of parts put through such a cycle. Refer to Figures 11 and 12. V
at 25°C after temperature cycle at +25°C to –40°C to +85°C to +25°C; V

Specifications subject to change without notice.

1000

O

OERR

/°C –40°C < TA < +85°C 5 25 ppm/°C

O

– V

IN

O

/∆V

O

IN

/∆I

O

LOAD

IN

N

R

∆V

O

V

OHYS

SC

SHDN

LOGIC

INL

INH

) = VO at 25°C after 1000 hours at 125°C; ∆VO = (VO (t0) – VO (t

VIN = 2.5 V to 15 V
–40°C < T
V

= 3 V,

IN

I

LOAD

–40°C < T

< +85°C 10 25 ppm/V

A

= 0 mA to 5 mA

< +85°C 60 ppm/mA

A

No Load 100 120 µA
–40°C < T

< +85°C 140 µA

A

0.1 Hz to 10 Hz 5 µV p-p

1,000 Hours 50 ppm

= 60 Hz 85 dB

IN

OHYS

= ((VO–V

)/VO) × 106 (in ppm).

OTC

2.042 2.048 2.054 V

0.29 0.29 %

300 mV

20 µs

40 ppm

30 mA

3 µA
500 nA

0.8 V

2.4 V

))/VO (t0) × 106 (in ppm).

1000

OHYS

= VO –V

; VO = VO at 25°C at time 0; V

OTC

OTC

O

= V

O

ELECTRICAL CHARACTERISTICS

(@ VIN = 15 V, TA = 25ⴗC unless otherwise noted)

Parameter Symbol Conditions Min Typ Max Unit

Initial Accuracy V
Initial Accuracy Error V
Temperature Coefficient TCV
Minimum Supply Voltage Headroom V
Line Regulation ∆V

Load Regulation ∆V

Quiescent Current I

Voltage Noise e
Turn-On Settling Time t
Long-Term Stability
Output Voltage Hysteresis

1

2

Ripple Rejection Ratio RRR f
Short Circuit to GND I
Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

NOTES

1

Long-term stability, typical shift in value of output voltage at 25°C on a sample of parts subjected to operation life test of 1000 hours at 125°C. ∆VO = VO (t0) –V
(t

); VO (t0) = VO at 25°C at time 0; VO (t

1000

2

Output Voltage Hysteresis, is defined as the change in 25°C output voltage before and after the device is cycled through temperature. +25 °C to –40°C to +85°C to
+25°C. This is a typical value from a sample of parts put through such a cycle. Refer to Figures 11 and 12. V
at 25°C after temperature cycle at +25°C to –40°C to +85°C to +25°C; V

Specifications subject to change without notice.

1000

O

OERR

/°C –40°C < TA < +85°C 5 25 ppm/°C

O

– V

IN

O

/∆V

O

IN

/∆I

O

LOAD

IN

N

R

∆V

O

V

OHYS

SC

SHDN

LOGIC

INL

INH

) = VO at 25°C after 1000 hours at 125°C; ∆VO = (VO (t0) – VO (t

VIN = 2.5 V to 15 V
–40°C < T
V

= 3 V,

IN

I

LOAD

–40°C < T

< +85°C 10 25 ppm/V

A

= 0 mA to 5 mA

< +85°C 60 ppm/mA

A

No Load 100 120 µA
–40°C < T

< +85°C 140 µA

A

0.1 Hz to 10 Hz 5 µV p-p

1,000 Hours 50 ppm

= 60 Hz 85 dB

IN

OHYS

= ((VO–V

)/VO) × 106 (in ppm).

OTC

2.042 2.048 2.054 V

0.29 0.29 %

300 mV

20 µs

40 ppm

30 mA

3 µA
500 nA

0.8 V

VIN – 1 V

))/VO (t0) × 106 (in ppm).

1000

OHYS

= VO –V

; VO = VO at 25°C at time 0; V

OTC

OTC

O

= V

O

–2–

REV. 0

ADR391 SPECIFICATIONS

ADR390/ADR391

ELECTRICAL CHARACTERISTICS

(@ VIN = 5 V, TA = 25ⴗC unless otherwise noted)

Parameter Symbol Conditions Min Typ Max Unit

Initial Accuracy V
Initial Accuracy Error V
Temperature Coefficient TCV
Minimum Supply Voltage Headroom V
Line Regulation ∆V

Load Regulation ∆V

Quiescent Current I

Voltage Noise e
Turn-On Settling Time t
Long-Term Stability
Output Voltage Hysteresis

1

2

Ripple Rejection Ratio RRR f
Short Circuit to GND I
Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

NOTES

1

Long-term stability, typical shift in value of output voltage at 25°C on a sample of parts subjected to operation life test of 1000 hours at 125°C. ∆VO = VO (t0) –V
(t

); VO (t0) = VO at 25°C at time 0; VO (t

1000

2

Output Voltage Hysteresis, is defined as the change in 25°C output voltage before and after the device is cycled through temperature. +25 °C to –40°C to +85°C to
+25°C. This is a typical value from a sample of parts put through such a cycle. Refer to Figures 11 and 12. V
at 25°C after temperature cycle at +25°C to –40°C to +85°C to +25°C; V

Specifications subject to change without notice.

1000

O

OERR

/°C –40°C < TA < +85°C 5 25 ppm/°C

O

– V

IN

O

/∆V

O

IN

/∆I

O

LOAD

IN

N

R

∆V

O

V

OHYS

SC

SHDN

LOGIC

INL

INH

) = VO at 25°C after 1000 hours at 125°C; ∆VO = (VO (t0) – VO (t

VIN = 2.8 V to 15 V
–40°C < T
V

= 3.5 V,

IN

I

LOAD

–40°C < T

< +85°C 10 25 ppm/V

A

= 0 mA to 5 mA

< +85°C 60 ppm/mA

A

No Load 100 120 µA
–40°C < T

< +85°C 140 µA

A

0.1 Hz to 10 Hz 5 µV p-p

1,000 Hours 50 ppm

= 60 Hz 85 dB

IN

OHYS

= ((VO–V

)/VO) × 106 (in ppm).

OTC

2.494 2.5 2.506 V

0.24 0.24 %

300 mV

20 µs

75 ppm

25 mA

3 µA
500 nA

0.8 V

2.4 V

))/VO (t0) × 106 (in ppm).

1000

OHYS

= VO –V

; VO = VO at 25°C at time 0; V

OTC

OTC

O

= V

O

ELECTRICAL CHARACTERISTICS

(@ VIN = 15 V, TA = 25ⴗC unless otherwise noted)

Parameter Symbol Conditions Min Typ Max Unit

Initial Accuracy V
Initial Accuracy Error V
Temperature Coefficient TCV
Minimum Supply Voltage Headroom V
Line Regulation ∆V

Load Regulation ∆V

Quiescent Current I

Voltage Noise e
Turn-On Settling Time t
Long-Term Stability
Output Voltage Hysteresis

1

2

Ripple Rejection Ratio RRR f
Short Circuit to GND I
Shutdown Supply Current I
Shutdown Logic Input Current I
Shutdown Logic Low V
Shutdown Logic High V

NOTES

1

Long-term stability, typical shift in value of output voltage at 25°C on a sample of parts subjected to operation life test of 1000 hours at 125°C. ∆VO = VO (t0) –V
(t

); VO (t0) = VO at 25°C at time 0; VO (t

1000

2

Output Voltage Hysteresis, is defined as the change in 25°C output voltage before and after the device is cycled through temperature. +25 °C to –40°C to +85°C to
+25°C. This is a typical value from a sample of parts put through such a cycle. Refer to Figures 11 and 12. V
at 25°C after temperature cycle at +25°C to –40°C to +85°C to +25°C; V

Specifications subject to change without notice.

1000

O

OERR

/°C –40°C < TA < +85°C 5 25 ppm/°C

O

– V

IN

O

/∆V

O

IN

/∆I

O

LOAD

IN

N

R

∆V

O

V

OHYS

SC

SHDN

LOGIC

INL

INH

) = VO at 25°C after 1000 hours at 125°C; ∆VO = (VO (t0) – VO (t

VIN = 2.8 V to 15 V
–40°C < T
V

= 3.5 V,

IN

I

LOAD

–40°C < T

< +85°C 10 25 ppm/V

A

= 0 mA to 5 mA

< +85°C 60 ppm/mA

A

No Load 100 120 µA
–40°C < T

< +85°C 140 µA

A

0.1 Hz to 10 Hz 5 µV p-p

1,000 Hours 50 ppm

= 60 Hz 85 dB

IN

OHYS

= ((VO–V

)/VO) × 106 (in ppm).

OTC

2.494 2.5 2.506 V

0.24 0.24 %

300 mV

20 µs

75 ppm

30 mA

3 µA
500 nA

0.8 V

VIN – 1 V

))/VO (t0) × 106 (in ppm).

1000

OHYS

= VO –V

; VO = VO at 25°C at time 0; V

OTC

OTC

O

= V

O

–3–REV. 0

ADR390/ADR391

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V

Shutdown Logic Level . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V

Or Supply Voltage, Whichever is Lower . . . . . . . . . . . . 18 V

Output Short-Circuit Duration to GND Observe Derating Curves

Package Type ␪JA* ␪

JC

Unit

5-Lead SOT-23 (RT) 230 – °C/W

*θJA is specified for worst-case conditions, i.e., θ

socket for SOT packages.

is specified for device in

JA

Storage Temperature Range

RT Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Operating Temperature Range

ADR390/ADR391 . . . . . . . . . . . . . . . . . . . –40°C to +85°C

Junction Temperature Range

RT Package . . . . . . . . . . . . . . . . . . . . . . . –65°C to +150°C

Lead Temperature Range (Soldering, 60 sec) . . . . . . . . 300°C

*Stresses above those listed under Absolute Maximum Ratings may cause perma-

nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those listed in the operational sections
of this specification is not implied. Exposure to absolute maximum rating condi­tions for extended periods may affect device reliability.

ORDERING GUIDE

Temperature Package Package Top Output Number of

Model Range Description Option Mark Voltage Parts

ADR390ART–REEL7 –40⬚C to +85⬚C 5-Lead SOT RT-5 R0A 2.048 3,000
ADR390ART–REEL –40⬚C to +85⬚C 5-Lead SOT RT-5 R0A 2.048 10,000

ADR391ART–REEL7 –40⬚C to +85⬚C 5-Lead SOT RT-5 R1A 2.500 3,000
ADR391ART–REEL –40⬚C to +85⬚C 5-Lead SOT RT-5 R1A 2.500 10,000

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADR390/ADR391 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.

–4–

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