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PDF ( 数据手册 , 数据表 ) ADR520

零件编号 ADR520
描述 High Precision Shunt Mode Voltage References
制造商 Analog Devices
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ADR520 数据手册, 描述, 功能
High Precision Shunt Mode
Voltage References
ADR520/ADR525/ADR530/ADR540/ADR550
FEATURES
Ultracompact SC70 and SOT-23-3 packages
Temperature coefficient: 40 ppm/°C (maximum)
2× the temperature coefficient improvement over the
LM4040
Pin compatible with the LM4040/LM4050
Initial accuracy: ±0.2%
Low output voltage noise: 14 μV p-p @ 2.5 V output
No external capacitor required
Operating current range: 50 μA to 15 mA
Industrial temperature range: −40°C to +85°C
APPLICATIONS
Portable, battery-powered equipment
Automotive
Power supplies
Data acquisition systems
Instrumentation and process control
Energy measurement
Table 1. Selection Guide
Part
ADR520A
ADR520B
ADR525A
ADR525B
ADR530A
ADR530B
ADR540A
ADR540B
ADR550A
ADR550B
Voltage (V)
2.048
2.048
2.5
2.5
3.0
3.0
4.096
4.096
5.0
5.0
Initial
Accuracy (%)
±0.4
±0.2
±0.4
±0.2
±0.4
±0.2
±0.4
±0.2
±0.4
±0.2
Temperature
Coefficient
(ppm/°C)
70
40
70
40
70
40
70
40
70
40
PIN CONFIGURATION
V+ 1
V– 2
ADR520/
ADR525/
ADR530/
3 TRIM
ADR540/
ADR550
Figure 1. 3-Lead SC70 (KS) and 3-Lead SOT-23-3 (RT)
GENERAL DESCRIPTION
Designed for space-critical applications, the ADR520/ADR525/
ADR530/ADR540/ADR550 are high precision shunt voltage
references, housed in ultrasmall SC70 and SOT-23-3 packages.
These references feature low temperature drift of 40 ppm/°C,
an initial accuracy of better than ±0.2%, and ultralow output
noise of 14 μV p-p.
Available in output voltages of 2.048 V, 2.5 V, 3.0 V, 4.096 V,
and 5.0 V, the advanced design of the ADR520/ADR525/
ADR530/ADR540/ADR550 eliminates the need for compensa-
tion by an external capacitor, yet the references are stable with
any capacitive load. The minimum operating current increases
from a mere 50 μA to a maximum of 15 mA. This low operating
current and ease of use make these references ideally suited for
handheld, battery-powered applications.
A trim terminal is available on the ADR520/ADR525/ADR530/
ADR540/ADR550 to allow adjustment of the output voltage
over a ±0.5% range, without affecting the temperature coefficient
of the device. This feature provides users with the flexibility to
trim out any system errors.
Rev. E
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 ©2003–2008 Analog Devices, Inc. All rights reserved.







ADR520 pdf, 数据表
ADR520/ADR525/ADR530/ADR540/ADR550
TYPICAL PERFORMANCE CHARACTERISTICS
5.5
5.0 ADR550
4.5
ADR540
4.0
3.5
3.0 ADR530
2.5 ADR525
2.0 ADR520
1.5
1.0 TA = 25°C
0.5
0
0 25 50 75 100
MINIMUM OPERATING CURRENT (µA)
Figure 2. Reverse Characteristics and Minimum Operating Current
8
7
TA = +25°C
6
5
TA = +85°C
4
TA = –40°C
3
2
1
0
0 3 6 9 12 15
IIN (mA)
Figure 3. ADR520 Reverse Voltage vs. Operating Current
8
6
4
2
TA = +25°C
0
TA = –40°C
TA = +85°C
–2
0 3 6 9 12 15
IIN (mA)
Figure 4. ADR525 Reverse Voltage vs. Operating Current
8
7
6
5
4
3
TA = +25°C TA = +85°C
2
TA = –40°C
1
0
0 3 6 9 12 15
IIN (mA)
Figure 5. ADR550 Reverse Voltage vs. Operating Current
VIN = 2V/DIV
VOUT = 1V/DIV
IIN = 10mA
4µs/DIV
TIME (µs)
Figure 6. ADR525 Turn-On Response
VIN = 2V/DIV
VOUT = 1V/DIV
IIN = 100µA
4µs/DIV
TIME (µs)
Figure 7. ADR525 Turn-On Response
Rev. E | Page 8 of 16







ADR520 equivalent, schematic
ADR520/ADR525/ADR530/ADR540/ADR550
NOTES
©2003–2008 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04501-0-6/08(E)
Rev. E | Page 16 of 16










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