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ADR520 Fiches technique(PDF) 1 Page - Analog Devices

No de pièce ADR520
Description  High Precision Shunt Mode Voltage References
Download  16 Pages
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Site Internet  http://www.analog.com
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ADR520 Fiches technique(HTML) 1 Page - Analog Devices

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High Precision Shunt Mode
Voltage References
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A
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. 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: 781.326.8703
© 2003 Analog Devices, Inc. All rights reserved.
FEATURES
Ultracompact SC70 and SOT-23 packages
Temperature coefficient: 40 ppm/°C (max)
2× the tempco improvement over the LM4040
Pin compatible with 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 10 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
Voltage
(V)
Initial
Accuracy (%)
Temperature
Coeffecient
(ppm/°C)
ADR520A
2.048
±0.4
70
ADR520B
2.048
±0.2
40
ADR525A
2.5
±0.4
70
ADR525B
2.5
±0.2
40
ADR530A
3.0
±0.4
70
ADR530B
3.0
±0.2
40
ADR540A
4.096
±0.4
70
ADR540B
4.096
±0.2
40
ADR550A
5.0
±0.4
70
ADR550B
5.0
±0.2
40
PIN CONFIGURATION
ADR520/
ADR525/
ADR530/
ADR540/
ADR550
V+
1
V–
2
TRIM
3
Figure 1. 3-Lead SC70 (KS)
and 3-Lead SOT-23 (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 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 ADR5xx’s advanced design eliminates the need for
compensation 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 10 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 ADR5xx 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.


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