ANALOG DEVICES ADR1500 Service Manual
1.2875 V Micropower, Shunt
V
A
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FEATURES
Wide operating range: 50 μA to 10 mA
Initial accuracy: ±0.2% max
Output impedance: 1 Ω max
Wideband noise (10 Hz to 10 kHz): 20 μV rms
Operating temperature: −40°C to +85°C
Compact, surface-mount SC70 package
APPLICATIONS
Computer servers
Battery-powered instrumentation
Portable medical equipment
Automotive
GENERAL DESCRIPTION
The ADR1500 is a low cost, 2-terminal (shunt), precision band
gap reference. It provides an accurate 1.2875 V output for input
currents between 50 μA to 10 mA.
Voltage Reference
ADR1500
PIN CONFIGURATION
DR1500
TOP VIEW
(Not to Scale)
1
V–
3
NC (OR V–)
2
+
NC = NO CONNECT
Figure 1. 3-Lead SC70 (KS Suffix)
05749-001
The low minimum operating current makes the ADR1500 ideal
r use in battery-powered 3 V or 5 V systems. However, the
fo
wide operating current range means the ADR1500 is extremely
versatile and suitable for use in a wide variety of high current
applications.
The ADR1500 is available in the tiny SC70 package and is
pecified over the −40°C to +85°C operating temperature range.
s
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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 ©2006 Analog Devices, Inc. All rights reserved.
ADR1500
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TABLE OF CONTENTS
Features .............................................................................................. 1
Typical Perf or m an c e Charac t e r istics ..............................................5
Applications....................................................................................... 1
Pin Configuration............................................................................. 1
General Description......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics............................................................. 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
REVISION HISTORY
1/06—Revision 0: Initial Version
Theory of Operation .........................................................................6
Applying the ADR1500 ................................................................6
Tur n -O n Tim e ...............................................................................6
Transi e n t Resp o n se .......................................................................7
Outline Dimensions ..........................................................................8
Ordering Guide .............................................................................8
Rev. 0 | Page 2 of 8
ADR1500
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SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
TA = 25°C, IIN = 100 μA, unless otherwise noted.
Table 1.
Parameter Min Typ Max Unit
REVERSE VOLTAGE OUTPUT 1.2849 1.2875 1.2901 V
REVERSE VOLTAGE TEMPERATURE DRIFT, −40°C to +85°C 170 220 ppm/°C
MINUMUM OPERATING CURRENT, −40°C to +85°C 50 μA
REVERSE VOLTAGE CHANGE WITH REVERSE CURRENT
50 μA < IIN < 10 mA, −40°C to +85°C 3.0 6 mV
50 μA < IIN < 1 mA, −40°C to +85°C 0.7 mV
DYNAMIC OUTPUT IMPEDANCE (ΔVR/ΔIR)
IIN = 1 mA ± 100 μA (f = 120 Hz) 0.4 1 Ω
OUTPUT NOISE
RMS Noise Voltage: 10 Hz to 10 kHz 20 μV rms
Low Frequency Noise Voltage: 0.1 Hz to 10 Hz 5 μV p-p
TURN-ON SETTLING TIME TO 0.1%, NO C
OUTPUT VOLTAGE HYSTERESIS 80 μV
TEMPERATURE RANGE
Specified Range −40 +85 °C
Operating Range −55 +125 °C
OUT
5 μs
Rev. 0 | Page 3 of 8
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