AD1582B AD [Analog Devices], AD1582B Datasheet

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AD1582B

Manufacturer Part Number
AD1582B
Description
2.5 V to 5.0 V Micropower, Precision Series Mode Voltage References
Manufacturer
AD [Analog Devices]
Datasheet

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a
Electrical
Grade
B
C
A
GENERAL DESCRIPTION
The AD1582, AD1583, AD1584, and AD1585 are a family of low
cost, low power, low dropout, precision band gap references.
These designs are available as three-terminal (series) devices
and are packaged in the compact SOT-23, 3-lead surface-mount
package. The versatility of these references makes them ideal for
use in battery-powered 3 V or 5 V systems where there may be
wide variations in supply voltage and a need to minimize power
dissipation.
The superior accuracy and temperature stability of the AD1582/
AD1583/AD1584/AD1585 is made possible by the precise
matching and thermal tracking of on-chip components. Patented
temperature drift curvature correction design techniques minimize
the nonlinearities in the voltage output temperature characteristic.
These series mode devices (AD1582/AD1583/AD1584/AD1585)
source or sink up to 5 mA of load current and operate efficiently
with only 200 mV of required headroom supply. This family
draws a maximum 70 µA of quiescent current with only a 1.0 µA/V
variation with supply voltage. The advantage of these designs
over conventional shunt devices is extraordinary. Valuable supply
current is no longer wasted through an input series resistor, and
maximum power efficiency is achieved at all input voltage levels.
The AD1582, AD1583, AD1584, and AD1585 are available in
three grades, A, B, and C, and are provided in a tiny footprint,
the SOT-23. All grades are specified over the industrial tem-
perature range of –40°C to +125°C.
REV. D
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. 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.
FEATURES
Series Reference (2.5 V, 3 V, 4.096 V, 5 V)
Low Quiescent Current: 70 A max
Current Output Capability:
Wide Supply Range: V
Wideband Noise (10 Hz to 10 kHz): 50 V rms
Specified Temperature Range: –40 C to +125 C
Compact, Surface-Mount SOT-23 Package
AD158x Products, Three Electrical Grades
AD1582
0.08%
0.16%
0.80%
Initial Accuracy
AD1583/AD1585 AD1584
0.10%
0.20%
1.00%
IN
= V
OUT
5 mA
+ 200 mV to 12 V
0.10%
0.20%
0.98%
Tempco
(ppm C)
50
50
100
2.5 V to 5.0 V Micropower, Precision
AD1582/AD1583/AD1584/AD1585
Series Mode Voltage References
TARGET APPLICATIONS
1. Portable, battery-powered equipment, e.g., notebook comput-
2. Computer workstations. Suitable for use with a wide range of
3. Smart industrial transmitters
4. PCMCIA cards
5. Automotive
6. Hard disk drives
7. 3 V/5 V, 8-bit/12-bit data converters
Figure 1. Supply Current ( µ A) vs. Supply Voltage (V)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
ers, cellular phones, pagers, PDAs, GPSs, and DMMs.
video RAMDACs.
900
800
700
600
500
400
300
200
100
0
2.7
FUNCTIONAL BLOCK DIAGRAM
V
GND
© 2004 Analog Devices, Inc. All rights reserved.
OUT
SHUNT REFERENCE
3-Lead SOT-23
1
2
(RT Suffix)
TOP VIEW
AD1582/
AD1583/
AD1584/
AD1585
AD1582 SERIES REFERENCE
V
SUPPLY
*
3.076k
(V)
*
3
V
SOURCE RESISTOR
IN
www.analog.com
5

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AD1582B Summary of contents

Page 1

FEATURES Series Reference (2 4.096 Low Quiescent Current max Current Output Capability Wide Supply Range OUT Wideband Noise ( kHz ...

Page 2

... O 40 100 35 –V ) 200 200 IN OUT 0.2 0.4 0.25 0.45 2.7 3 100 100 115 –40 +125 –40 –55 +125 –55 –2– AD1582B AD1582C Typ Max Min Typ Max +2 –4 +4 +0.08 –0.16 +0. 200 0.2 0.2 0.4 0.4 0.25 0.25 0.45 0.45 2.7 2.7 3.5 3 ...

Page 3

AD1583–SPECIFICATIONS Parameter OUTPUT VOLTAGE (@ 25° INITIAL ACCURACY ERROR (@ 25°C) V OERR OUTPUT VOLTAGE TEMPERATURE DRIFT TEMPERATURE COEFFICIENT (TCV –40°C < T < +125°C A 0°C < T < 70°C A MINIMUM SUPPLY HEADROOM (V IN LOAD ...

Page 4

AD1582/AD1583/AD1584/AD1585 AD1584–SPECIFICATIONS Parameter OUTPUT VOLTAGE (@ 25° INITIAL ACCURACY ERROR (@ 25°C) V OERR OUTPUT VOLTAGE TEMPERATURE DRIFT TEMPERATURE COEFFICIENT (TCV –40°C < T < +125°C A 0°C < T < 70°C A MINIMUM SUPPLY HEADROOM (V IN ...

Page 5

AD1585–SPECIFICATIONS Parameter OUTPUT VOLTAGE (@ 25° INITIAL ACCURACY ERROR (@ 25°C) V OERR OUTPUT VOLTAGE TEMPERATURE DRIFT TEMPERATURE COEFFICIENT (TCV –40°C < T < +125°C A 0°C < T < 70°C A MINIMUM SUPPLY HEADROOM (V –V IN ...

Page 6

... Although the AD1582/AD1583/AD1584/AD1585 feature 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. Output Voltage Accuracy Accuracy Model (V) (mV) AD1582ART-R2 2.50 20 AD1582ART-Reel7 2.50 20 AD1582BRT-R2 2.50 2 AD1582BRT-Reel7 2.50 2 AD1582CRT-Reel7 2.50 4 AD1583ART-R2 3.00 30 AD1583ART-Reel7 3.00 30 AD1583BRT-R2 3.00 3 AD1583BRT-Reel7 3.00 3 AD1583CRT-Reel7 3 ...

Page 7

PARAMETER DEFINITIONS Temperature Coefficient (TCV ) O The change of output voltage over the operating temperature change and normalized by the output voltage expressed in ppm/ C. The equation follows ° = ...

Page 8

AD1582/AD1583/AD1584/AD1585 –60 –50 –40 –30 –20 –10 0 ppm/ C TPC 1. Typical Output Voltage Temperature Drift Distribution ...

Page 9

... AD1585, the designer can easily determine the maximum total error by summing initial accuracy and temperature variation, e.g., for the AD1582BRT, the initial tolerance is ± 2 mV, the temperature error band is ± 8 mV, thus the reference is guaranteed to be 2.5 V ± from –40°C to +125°C. ...

Page 10

AD1582/AD1583/AD1584/AD1585 VOLTAGE OUTPUT NONLINEARITY VERSUS TEMPERATURE When using a voltage reference with data converters impor- tant to understand the impact that temperature drift can have on the converter’s performance. The nonlinearity of the reference output drift represents additional ...

Page 11

AC PERFORMANCE To apply the AD1582/AD1583/AD1584/AD1585 family of references important to understand the effects of dynamic output impedance and power supply rejection. In Figure 8a, a voltage divider is formed by the AD1582’s output impedance and by the ...

Page 12

AD1582/AD1583/AD1584/AD1585 TURN-ON TIME Many low power instrument manufacturers are becoming increas- ingly concerned with the turn-on characteristics of the components being used in their systems. Fast turn-on components often enable the end user to save power by keeping power off ...

Page 13

Small Outline Transistor Package [SOT-23-3] 1.40 1.30 1.20 4.10 4.00 3.90 1.55 2.05 1.50 2.00 1.50 1.95 8.30 8.00 7.70 3.20 1.00 MIN 3.10 2.90 DIRECTION OF UNREELING REV. D AD1582/AD1583/AD1584/AD1585 OUTLINE DIMENSIONS (RT-3) Dimensions shown in millimeters 3.04 ...

Page 14

AD1582/AD1583/AD1584/AD1585 Revision History Location 6/04—Data Sheet Changed from REV REV. D. Changes to ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . ...

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