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ADR550 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADR550
Beschreibung High Precision Shunt Mode Voltage References
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADR550 Datasheet, Funktion
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: 18 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
ADR525A
ADR525B
ADR530A
ADR530B
ADR550A
ADR550B
Voltage (V)
2.5
2.5
3.0
3.0
5.0
5.0
Initial
Accuracy (%)
±0.4
±0.2
±0.4
±0.2
±0.4
±0.2
Temperature
Coefficient
(ppm/°C)
70
40
70
40
70
40
High Precision Shunt Mode
Voltage References
ADR525/ADR530/ADR550
PIN CONFIGURATION
V+ 1
ADR525/
ADR530/
ADR550
3 TRIM
V– 2
Figure 1. 3-Lead SC70 (KS) and 3-Lead SOT-23-3 (RT)
GENERAL DESCRIPTION
Designed for space-critical applications, the ADR525/ADR530/
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 18 μV p-p.
Available in output voltages of 2.5 V, 3.0 V, and 5.0 V, the
advanced design of the ADR525/ADR530/ADR550 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 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 ADR525/ADR530/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 small
system errors.
For better initial accuracy and wider temperature range, see the
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 family at
www.analog.com.
Rev. F
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 ©2003–2010 Analog Devices, Inc. All rights reserved.






ADR550 Datasheet, Funktion
ADR525/ADR530/ADR550
PARAMETER DEFINITIONS
TEMPERATURE COEFFICIENT
Temperature coefficient is defined as the change in output
voltage with respect to operating temperature changes and is
normalized by the output voltage at 25°C. This parameter is
expressed in ppm/°C and is determined by the following
equation:
TCVO
⎢⎣
ppm
°C
⎥⎦
=
VOUT (T2 )
VOUT (25° C)
VOUT
× (T2
(T1 )
T1
)
×
10 6
(1)
where:
VOUT(T2) = VOUT at Temperature 2.
VOUT(T1) = VOUT at Temperature 1.
VOUT(25°C) = VOUT at 25°C.
THERMAL HYSTERESIS
Thermal hysteresis is defined as the change in output voltage
after the device is cycled through temperatures ranging from
+25°C to −40°C, then to +85°C, and back to +25°C. The
following equation expresses a typical value from a sample of
parts put through such a cycle:
VOUT _ HYS = VOUT (25° C) VOUT _ END
VOUT
_
HYS [ppm]
=
VOUT
(25° C) VOUT
VOUT (25° C)
_
END
× 106
(2)
where:
VOUT(25°C) = VOUT at 25°C.
VOUT_END = VOUT at 25°C after a temperature cycle from +25°C to
−40°C, then to +85°C, and back to +25°C.
Rev. F | Page 6 of 12

6 Page









ADR550 pdf, datenblatt
ADR525/ADR530/ADR550
ORDERING GUIDE
Model1
ADR525ART-REEL7
ADR525ARTZ-R2
ADR525ARTZ-REEL7
ADR525BKSZ-REEL7
ADR525BRTZ-REEL7
ADR530ARTZ-REEL7
ADR530BKSZ-REEL7
ADR530BRTZ-REEL7
ADR550ARTZ-REEL7
ADR550BRTZ-REEL7
Output
Voltage (V)
2.5
2.5
2.5
2.5
2.5
3.0
3.0
3.0
5.0
5.0
Initial
Accuracy
(mV)
10
10
10
5
5
12
6
6
20
10
Tempco
Industrial
(ppm/°C)
70
70
70
40
40
70
40
40
70
40
Package
Description
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
Package
Option
RT-3
RT-3
RT-3
KS-3
RT-3
RT-3
KS-3
RT-3
RT-3
RT-3
Branding
RRA
R1W
R1W
R1N
R1N
R1X
R1Y
R1Y
R1Q
R1P
Ordering
Qty
3,000
250
3,000
3,000
3,000
3,000
3,000
3,000
3,000
3,000
Temperature
Range
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
1 Z = RoHS Compliant Part.
©2003–2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D04501-0-8/10(F)
Rev. F | Page 12 of 12

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