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ADR381ARTZ-REEL7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Precision Low Drift 2.048 V/2.500 V
SOT-23 Voltage Reference
ADR380/ADR381
Rev. C
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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.
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2001–2010 Analog Devices, Inc. All rights reserved.
FEATURES
Initial accuracy: ±5 mV/±6 mV maximum
Initial accuracy error: ±0.24%/±0.24%
Low TCV
OUT
: 25 ppm/°C maximum
Load regulation: 70 ppm/mA
Line regulation: 25 ppm/V
Wide operating ranges
2.4 V to 18 V for ADR380
2.8 V to 18 V for ADR381
Low power: 120 μA maximum
High output current: 5 mA
Wide temperature range: −40°C to +85°C
Tiny 3-lead SOT-23 package with standard pinout
APPLICATIONS
Battery-powered instrumentation
Portable medical instruments
Data acquisition systems
Industrial process control systems
Hard disk drives
Automotive
PIN CONFIGURATION
V
IN
1
V
OUT
2
GND
3
ADR380/
ADR381
TOP VIEW
(Not to Scale)
02175-001
Figure 1. 3-Lead SOT-23
(RT Suffix)
GENERAL DESCRIPTION
The ADR380 and ADR381 are precision 2.048 V and 2.500 V
band gap voltage references featuring high accuracy, high
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 make
them ideal for 3 V to 5 V battery-powered applications.
The ADR380 and ADR381 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. The ADR380/ADR381 are available in the tiny 3-lead
SOT-23 package.
Table 1. ADR38x Products
Part Number Nominal Output Voltage (V)
ADR380 2.048
ADR381 2.500
ADR380/ADR381
Rev. C | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
ADR380 Electrical Characteristics ............................................. 3
ADR381 Electrical Characteristics ............................................. 4
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution .................................................................................. 5
Typical Performance Characteristics ............................................. 6
Terminology .................................................................................... 10
Theory of Operation ...................................................................... 11
Device Power Dissipation Considerations .............................. 11
Input Capacitor ........................................................................... 11
Output Capacitor ........................................................................ 11
Applications Information .............................................................. 12
Stacking Reference ICs for Arbitrary Outputs ....................... 12
A Negative Precision Reference Without Precision Resistors
....................................................................................................... 12
Precision Current Source .......................................................... 12
Precision High Current Voltage Source .................................. 13
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
10/10—Rev. B to Rev. C
Deleted Figure 32 ............................................................................ 14
Changes to Ordering Guide .......................................................... 14
1/09—Rev. A to Rev. B
Updated Format .................................................................. Universal
Changes to Table 7 ............................................................................ 5
Changes to Stacking Reference ICs for Arbitrary Outputs
Section, Figure 28, and Figure 29 ................................................. 12
Updated Outline Dimensions ....................................................... 14
Changes to Ordering Guide .......................................................... 14
7/04—Rev. 0 to Rev. A
Updated Format .................................................................. Universal
Changes to Ordering Guide .......................................................... 16
Updated Outline Dimensions ....................................................... 16
ADR380/ADR381
Rev. C | Page 3 of 16
SPECIFICATIONS
ADR380 ELECTRICAL CHARACTERISTICS
V
IN
= 5.0 V, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage V
OUT
2.043 2.048 2.053 V
Initial Accuracy Error V
OERR
−5 +5 mV
−0.24 +0.24 %
Temperature Coefficient TCV
OUT
−40°C < T
A
< +85°C 5 25 ppm/°C
0°C < T
A
< 70°C 3 21 ppm/°C
Minimum Supply Voltage Headroom V
IN
– V
OUT
I
LOAD
≤ 3 mA 300 mV
Line Regulation ΔV
OUT
/DV
IN
V
IN
= 2.5 V to 15 V, −40°C < T
A
< +85°C 10 25 ppm/V
Load Regulation ΔV
OUT
/DI
LOAD
V
IN
= 3 V, I
LOAD
= 0 mA to 5 mA,
−40°C < T
A
< +85°C
70 ppm/mA
Quiescent Current I
IN
No load 100 120 μA
−40°C < T
A
< +85°C 140 μA
Voltage Noise e
N
0.1 Hz to 10 Hz 5 μV p-p
Turn-On Settling Time t
R
20 μs
Long-Term Stability ΔV
OUT
1000 Hrs 50 ppm
Output Voltage Hysteresis V
OUT_HYS
40 ppm
Ripple Rejection Ratio RRR f
IN
= 60 Hz 85 dB
Short Circuit to GND I
SC
25 mA
V
IN
= 15.0 V, T
A
= 25°C, unless otherwise noted.
Table 3.
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage
V
OUT
2.043 2.048 2.053 V
Initial Accuracy Error V
OERR
−5 +5 mV
−0.24 +0.24 %
Temperature Coefficient TCV
OUT
−40°C < T
A
< +85°C 5 25 ppm/°C
0°C < T
A
< 70°C 3 21 ppm/°C
Minimum Supply Voltage Headroom V
IN
− V
OUT
I
LOAD
≤ 3 mA 300 mV
Line Regulation ΔV
OUT
/DV
IN
V
IN
= 2.5 V to 15 V, −40°C < T
A
< +85°C 10 25 ppm/V
Load Regulation ΔV
OUT
/DI
LOAD
V
IN
= 3 V, I
LOAD
= 0 mA to 5 mA,
−40°C < T
A
< +85°C
70 ppm/mA
Quiescent Current I
IN
No load 100 120 μA
−40°C < T
A
< +85°C 140 μA
Voltage Noise e
N
0.1 Hz to 10 Hz 5 μV p-p
Turn-On Settling Time t
R
20 μs
Long-Term Stability ΔV
OUT
1000 Hrs 50 ppm
Output Voltage Hysteresis V
OUT_HYS
40 ppm
Ripple Rejection Ratio RRR f
IN
= 60 Hz 85 dB
Short Circuit to GND I
SC
25 mA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADR381ARTZ-REEL7

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Manufacturer:
Analog Devices Inc.
Description:
Voltage References 2.048V & 2.5V Bandgap
Lifecycle:
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