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ADR391 View Datasheet(PDF) - Analog Devices

Part NameADR391 ADI
Analog Devices ADI
DescriptionMicropower, Low Noise Precision Voltage References with Shutdown


ADR391 Datasheet PDF : 20 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Micropower, Low Noise Precision Voltage
References with Shutdown
ADR390/ADR391/ADR392/ADR395
FEATURES
Compact TSOT-23-5 packages
Low temperature coefficient
B grade: 9 ppm/°C
A grade: 25 ppm/°C
Initial accuracy
B grade: ±4 mV maximum
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
GENERAL DESCRIPTION
The ADR390, ADR391, ADR392, and 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 ADI’s patented temperature drift curvature
correction techniques, the ADR39x references achieve a low
9 ppm/°C of temperature drift in the TSOT package.
FUNCTIONAL BLOCK DIAGRAM
SHDN
VIN
VOUT (SENSE)
1 ADR390/ 5
ADR391/
2 ADR392/
ADR395
3 (Not to Scale) 4
GND
VOUT (FORCE)
Figure 1. 5-Lead TSOT (UJ Suffix)
Table 1.
Model
ADR390B
ADR390A
ADR391B
ADR391A
ADR392B
ADR392A
ADR395B
ADR395A
VOUT (V)
2.048
2.048
2.5
2.5
4.096
4.096
5.0
5.0
Temperature
Coefficient (ppm/°C)
9
25
9
25
9
25
9
25
Accuracy (mV)
±4
±6
±4
±6
±5
±6
±5
±6
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 battery-
operated applications.
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
Fax: 781.461.3113 © 2005 Analog Devices, Inc. All rights reserved.
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GENERAL DESCRIPTION
The ADR390, ADR391, ADR392, and 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 ADI’s patented temperature drift curvature correction techniques, the ADR39x references achieve a low 9 ppm/°C of temperature drift in the TSOT package.

FEATURES
Compact TSOT-23-5 packages
Low temperature coefficient
   B grade: 9 ppm/°C
   A grade: 25 ppm/°C
Initial accuracy
   B grade: ±4 mV maximum
   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

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