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PDF ADR1581 Data sheet ( Hoja de datos )

Número de pieza ADR1581
Descripción Precision Shunt Voltage Reference
Fabricantes Analog Devices 
Logotipo Analog Devices Logotipo



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No Preview Available ! ADR1581 Hoja de datos, Descripción, Manual

1.25 V Micropower, Precision Shunt
Voltage Reference
ADR1581
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
4 kV human body model
400 V machine model
Compact, surface-mount SOT-23 package
APPLICATIONS
Portable, battery-powered equipment
Cellular phones, notebook computers, PDAs, GPSs,
and DMMs
Computer workstations
Suitable for use with a wide range of video RAMDACs
Smart industrial transmitters
PCMCIA cards
Automotive
3 V/5 V, 8-bit to 12-bit data converters
GENERAL DESCRIPTION
The ADR15811 is a low cost, 2-terminal (shunt), precision band
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 Protected by U.S. Patent No. 5,969,657; other patents pending.
PIN CONFIGURATION
ADR1581
V+ 1
3 NC (OR V–)
V– 2
TOP VIEW
NC = NO CONNECT
Figure 1. SOT-23
20
18
16
14
12
10
8
6
4
2
0
–20 –10
0
10
TEMPERATURE DRIFT (ppm/°C)
20
Figure 2. Reverse Voltage Temperature Drift Distribution
100
90
80
70
60
50
40
30
20
10
0
–5 –4 –3 –2 –1 0 1 2 3 4
OUTPUT ERROR (mV)
Figure 3. Reverse Voltage Error Distribution
5
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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
©2007 Analog Devices, Inc. All rights reserved.

1 page




ADR1581 pdf
TYPICAL PERFORMANCE CHARACTERISTICS
2000
1500
1000
500
20ppm/°C
0
–500
5ppm/°C
–1000
–1500
–55 –35 –15
5 25 45 65
TEMPERATURE (°C)
85 105 125
Figure 4. Output Drift for Different Temperature Characteristics
7
6
5
4
+85°C
3
2
1
+25°C
–40°C
0
–1
0.01
0.10 1.00
REVERSE CURRENT (mA)
Figure 5. Output Voltage Error vs. Reverse Current
10
ADR1581
100
80
60
40 +125°C
20 –40°C
+25°C
0
0 0.2 0.4 0.6 0.8 1.0 1.2
REVERSE VOLTAGE (V)
Figure 7. Reverse Current vs. Reverse Voltage
1.4
1
–40°C
0.8
0.6 +25°C
+85°C
0.4
0.2
0
0.01
0.1 1
10
FORWARD CURRENT (mA)
Figure 8. Forward Voltage vs. Forward Current
100
600
400
200
1.0 10 100 1k 10k 100k 1M
FREQUENCY (Hz)
Figure 6. Noise Spectral Density
Rev. 0 | Page 5 of 12

5 Page





ADR1581 arduino
OUTLINE DIMENSIONS
3.04
2.90
2.80
1.40
1.30
1.20
3
2.64
2.10
12
PIN 1
1.90 BSC
0.10
0.01
SEATING
PLANE
0.95 BSC
1.12
0.89
0.50
0.30
0.60
0.50
0.40
0.20
0.08
COMPLIANT TO JEDEC STANDARDS TO-236-AB
Figure 26. 3-Lead Small Outline Transistor Package [SOT-23-3]
(RT-3)
Dimensions shown in millimeters
ADR1581
1.55
1.50
1.45
4.10
4.00
3.90 2.05
2.00
1.95
1.10
1.00
0.90
1.10
1.00
0.90
8.30
8.00
7.70
2.80
2.70
2.60
3.55
3.50
3.45
3.20
3.10
1.00 MIN
2.90
DIRECTION OF UNREELING
0.75 MIN
0.35
0.30
0.25
7” REEL 100.00
OR
13” REEL 330.00
20.20
MIN
1.50 MIN
Figure 27. Tape and Reel Dimensions
(RT-3)
Dimensions shown in millimeters
13.20
13.00
12.80
14.40 MIN
7” REEL 50.00 MIN
OR
13” REEL 100.00 MIN
9.90
8.40
6.90
Rev. 0 | Page 11 of 12

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