ADR1581BRTZ-R2 Analog Devices Inc, ADR1581BRTZ-R2 Datasheet

IC VREF PREC SHUNT 1.25V SOT23-3

ADR1581BRTZ-R2

Manufacturer Part Number
ADR1581BRTZ-R2
Description
IC VREF PREC SHUNT 1.25V SOT23-3
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADR1581BRTZ-R2

Temperature Coefficient
50ppm/°C
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Mounting Type
Surface Mount
Current - Output
10mA
Voltage - Output
1.25V
Operating Temperature
-40°C ~ 85°C
Tolerance
±0.12%
Number Of Channels
1
Reference Type
Shunt
Current - Cathode
60µA
Topology
Shunt
Reference Voltage
1.25V
Reference Voltage Tolerance
1mV
Voltage Reference Case Style
SOT-23
No. Of Pins
3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Input
-
Current - Quiescent
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
FEATURES
Wide operating range: 60 μA to 10 mA
Initial accuracy: ±0.12% maximum
Temperature drift: ±50 ppm/°C maximum
Output impedance: 0.5 Ω maximum
Wideband noise (10 Hz to 10 kHz): 20 μV rms
Operating temperature range: −40°C to +85°C
High ESD rating
Compact, surface-mount SOT-23 package
APPLICATIONS
Portable, battery-powered equipment
Computer workstations
Smart industrial transmitters
PCMCIA cards
Automotive
3 V/5 V, 8-bit to 12-bit data converters
GENERAL DESCRIPTION
The ADR1581
gap reference. It provides an accurate 1.250 V output for input
currents between 60 μA and 10 mA.
The superior accuracy and stability of the ADR1581 is made
possible by the precise matching and thermal tracking of on-
chip components. Proprietary curvature correction design
techniques have been used to minimize the nonlinearities in
the voltage output temperature characteristics. The ADR1581
is stable with any value of capacitive load.
The low minimum operating current makes the ADR1581 ideal
for use in battery-powered 3 V or 5 V systems. However, the wide
operating current range means that the ADR1581 is extremely
versatile and suitable for use in a wide variety of high current
applications.
The ADR1581 is available in two grades, A and B, both of which
are provided in the SOT-23 package. Both grades are specified
over the industrial temperature range of −40°C to +85°C.
1
Rev. 0
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.
Protected by U.S. Patent No. 5,969,657; other patents pending.
and DMMs
4 kV human body model
400 V machine model
Cellular phones, notebook computers, PDAs, GPSs,
Suitable for use with a wide range of video RAMDACs
1
is a low cost, 2-terminal (shunt), precision band
1.25 V Micropower, Precision Shunt
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
100
20
18
16
14
12
10
90
80
70
60
50
40
30
20
10
8
6
4
2
0
0
–20
Figure 2. Reverse Voltage Temperature Drift Distribution
–5
Figure 3. Reverse Voltage Error Distribution
–4
V+
V–
PIN CONFIGURATION
–3
–10
1
2
NC = NO CONNECT
TEMPERATURE DRIFT (ppm/°C)
ADR1581
©2007 Analog Devices, Inc. All rights reserved.
TOP VIEW
–2
Voltage Reference
OUTPUT ERROR (mV)
Figure 1. SOT-23
–1
0
0
3
NC (OR V–)
1
2
10
ADR1581
3
www.analog.com
4
5
20

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ADR1581BRTZ-R2 Summary of contents

Page 1

FEATURES Wide operating range: 60 μ Initial accuracy: ±0.12% maximum Temperature drift: ±50 ppm/°C maximum Output impedance: 0.5 Ω maximum Wideband noise ( kHz): 20 μV rms Operating temperature range: −40°C to +85°C High ...

Page 2

ADR1581 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Pin Configuration............................................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Typical Performance Characteristics ............................................. 5 Theory of Operation ........................................................................ 6 Applying ...

Page 3

SPECIFICATIONS T = 25° 100 μA, unless otherwise noted Table 1. Parameter REVERSE VOLTAGE OUTPUT (SOT-23) REVERSE VOLTAGE TEMPERATURE DRIFT −40°C to +85°C MINIMUM OPERATING CURRENT MIN REVERSE VOLTAGE CHANGE WITH REVERSE CURRENT ...

Page 4

ADR1581 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Reverse Current Forward Current 1 Internal Power Dissipation SOT-23 (RT) Storage Temperature Range Operating Temperature Range ADR1581/RT Lead Temperature, Soldering Vapor Phase (60 sec) Infrared (15 sec) 2 ESD Susceptibility Human Body Model ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS 2000 1500 1000 20ppm/°C 500 0 –500 –1000 –1500 –55 –35 – TEMPERATURE (°C) Figure 4. Output Drift for Different Temperature Characteristics +25°C 0 –1 0.01 0.10 ...

Page 6

ADR1581 THEORY OF OPERATION The ADR1581 uses the band gap concept to produce a stable, low temperature coefficient voltage reference suitable for high accuracy data acquisition components and systems. The device makes use of the underlying physical nature of a ...

Page 7

V ) MAX O SLOPE = TC = 1.2506 (+85°C – +25°C) × 1.250V × 10 1.2504 1.2502 1.2500 V O 1.2498 1.2496 1.2494 1.2492 SLOPE = TC = (–40°C – +25°C) × 1.250V × 10 1.2490 ...

Page 8

ADR1581 OUTPUT IMPEDANCE VS. FREQUENCY Understanding the effect of the reverse dynamic output impedance in a practical application is important to successfully applying the ADR1581. A voltage divider is formed by the ADR1581 output impedance and the external source impedance. ...

Page 9

Output turn-on time is modified when an external noise-reduction filter is used. When present, the time constant of the filter dom- inates the overall settling. 2. OUTPUT ERROR 1mV/DIV, 2µs/DIV OUTPUT 0.5mV/DIV, 2ms/DIV Figure 20. Turn-On Settling ...

Page 10

ADR1581 USING THE ADR1581 WITH 3 V DATA CONVERTERS The ADR1581 low output drift (50 ppm/°C) and compact subminiature SOT-23 package make it ideally suited for today’s high performance converters in space-critical applications. One family of ADCs for which the ...

Page 11

OUTLINE DIMENSIONS 4.10 4.00 1.55 3.90 1.10 2.05 1.50 1.00 2.00 1.45 0.90 1.95 8.30 8.00 7.70 3.20 1.00 MIN 3.10 2.90 DIRECTION OF UNREELING 3.04 2.90 2.80 1.40 1.30 1.20 3 2.64 2. PIN 1 0.95 BSC ...

Page 12

... ADR1581ARTZ-R2 −40°C to +85°C 1 ADR1581BRTZ-REEL7 −40°C to +85°C 1 ADR1581BRTZ-R2 −40°C to +85° RoHS Compliant Part. ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Initial Output Temperature ...

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