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參數資料
| 型號： | ADR1581BRTZ-R2 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | 1.25 V Micropower, Precision Shunt Voltage Reference |
| 中文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.25 V, PDSO3 |
| 封裝： | ROHS COMPLIANT, TO-236AB, SOT-23, 3 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 491K |
| 代理商： | ADR1581BRTZ-R2 |
1.25 V Micropower, Precision Shunt
Voltage Reference
ADR1581
FEATURES
Trademarks and registered trademarks are the property of their respective owners.
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2007 Analog Devices, Inc. All rights reserved.
www.analog.com
1
Protected by U.S. Patent No. 5,969,657; other patents pending.
PIN CONFIGURATION
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
NC = NO CONNECT
TOP VIEW
V+
1
V–
2
NC (OR V–)
3
ADR1581
0
Figure 1. SOT-23
0
–20
2
4
6
8
10
12
14
16
18
20
TEMPERATURE DRIFT (ppm/°C)
Q
–10
0
10
20
0
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
Figure 2. Reverse Voltage Temperature Drift Distribution
The ADR1581
1
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.
0
10
20
30
40
50
60
70
80
90
100
OUTPUT ERROR (mV)
Q
–5
–4
–3
–2
–1
0
1
2
3
4
5
0
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.
Figure 3. Reverse Voltage Error Distribution
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.
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