Document Outline
- FEATURES
- APPLICATIONS
- PIN CONFIGURATION
- GENERAL DESCRIPTION
-
-
-
-
-
-
-
High Precision Shunt Mode
Voltage References
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A
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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
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Tel: 781.329.4700
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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 V p-p @ 2.5 V output
No external capacitor required
Operating current range: 50 A to 10 mA
Industrial temperature range: -40C to +85C
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
04501-0-001
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 V 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 A 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.
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A | Page 2 of 16
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 6
Parameter Definitions ...................................................................... 7
Typical Performance Characteristics ............................................. 8
Theory of Operation ...................................................................... 11
Applications ................................................................................ 11
Outline Dimensions ....................................................................... 13
Ordering Guide............................................................................... 14
REVISION HISTORY
11/03--Revision 0: Initial Version
12/03--Data Sheet Changed from REV. 0 to REV. A
Updated Outline Dimensions ....................................................... 13
Change to Ordering Guide............................................................ 14
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A | Page 3 of 16
SPECIFICATIONS
Table 2. ADR520 Electrical Characteristics @ I
IN
= 50 A to 10 mA, T
A
= 25C, unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
Grade A
Grade B
V
O
2.040
2.044
2.048
2.048
2.056
2.052
V
V
Initial Accuracy
V
OERR
Grade A
0.4%
8
+8
mV
Grade B
0.2%
4
+4
mV
Temperature Coefficient
1
TCV
O
40C < T
A
< +85C
Grade A
25
70
ppm/C
Grade B
15
40
ppm/C
Output Voltage Change vs. I
IN
V
R
I
IN
= 0.1 mA to 10 mA
40C < T
A
< +85C
I
IN
= 1 mA to 10 mA
40C < T
A
< +85C
1
4
2
mV
mV
mV
Dynamic Output Impedance
(V
R
/I
R
)
I
IN
= 0.1 mA to10 mA
0.27
Minimum Operating Current
I
IN
40C < T
A
< +85C
50
A
Voltage Noise
e
N p-p
0.1 Hz to 10 Hz
14
V p-p
Turn-On Settling Time
t
R
2
s
Output Voltage Hysteresis
V
O_HYS
I
IN
= 1 mA
40
ppm
1
Guaranteed by design
Table 3. ADR525 Electrical Characteristics @ I
IN
= 50 A to 10 mA, T
A
= 25C, unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
Grade A
Grade B
V
O
2.490
2.495
2.500
2.500
2.510
2.505
V
V
Initial Accuracy
V
OERR
Grade A
0.4%
10
+10
mV
Grade B
0.2%
5
+5
mV
Temperature Coefficient
1
TCV
O
40C < T
A
< +85C
Grade A
25
70
ppm/C
Grade B
15
40
ppm/C
Output Voltage Change vs. I
IN
V
R
I
IN
= 0.1 mA to 10 mA
40C < T
A
< +85C
I
IN
= 1 mA to 10 mA
40C < T
A
< +85C
1
4
2
mV
mV
mV
Dynamic Output Impedance
(V
R
/I
R
)
I
IN
= 0.1 mA to 10 mA
0.2
Minimum Operating Current
I
IN
40C < T
A
< +85C
50
A
Voltage Noise
e
N p-p
0.1 Hz to 10 Hz
14
V p-p
Turn-On Settling Time
t
R
2
s
Output Voltage Hysteresis
V
O_HYS
I
IN
= 1 mA
40
ppm
1
Guaranteed by design
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A | Page 4 of 16
Table 4. ADR530 Electrical Characteristics @ I
IN
= 50 A to 10 mA, T
A
= 25C, unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
Grade A
Grade B
V
O
2.988
2.994
3.000
3.000
3.012
3.006
V
V
Initial Accuracy
V
OERR
Grade A
0.4%
12
+12
mV
Grade B
0.2%
6
+6
mV
Temperature Coefficient
1
TCV
O
40C < T
A
< +85C
Grade A
25
70
ppm/C
Grade B
15
40
ppm/C
Output Voltage Change vs. I
IN
V
R
I
IN
= 0.1 mA to 10 mA
40C < T
A
< +85C
I
IN
= 1 mA to 10 mA
40C < T
A
< +85C
1
4
2
mV
mV
mV
Dynamic Output Impedance
(V
R
/I
R
)
I
IN
= 0.1 mA to 10 mA
0.2
Minimum Operating Current
I
IN
40C < T
A
< +85C
50
A
Voltage Noise
e
N p-p
0.1 Hz to 10 Hz
16
V p-p
Turn-On Settling Time
t
R
2
s
Output Voltage Hysteresis
V
O_HYS
I
IN
= 1 mA
40
ppm
1
Guaranteed by design
Table 5. ADR540 Electrical Characteristics @ I
IN
= 50 A to 10 mA, T
A
= 25C, unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
Grade A
Grade B
V
O
4.08
4.088
4.096
4.096
4.112
4.104
V
V
Initial Accuracy
V
OERR
Grade A
0.4%
16
+16
mV
Grade B
0.2%
8
+8
mV
Temperature Coefficient
1
TCV
O
40C < T
A
< +85C
Grade A
25
70
ppm/C
Grade B
15
40
ppm/C
Output Voltage Change vs. I
IN
V
R
I
IN
= 0.1 mA to 10 mA
40C < T
A
< +85C
I
IN
= 1 mA to 10 mA
40C < T
A
< +85C
1
5
2
mV
mV
mV
Dynamic Output Impedance
(V
R
/I
R
)
I
IN
= 0.1 mA to 10 mA
0.2
Minimum Operating Current
I
IN
40C < T
A
< +85C
50
A
Voltage Noise
e
N p-p
0.1 Hz to 10 Hz
18
V p-p
Turn-On Settling Time
t
R
2
s
Output Voltage Hysteresis
V
O_HYS
I
IN
= 1 mA
40
ppm
1
Guaranteed by design
ADR520/ADR525/ADR530/ADR540/ADR550
Rev. A | Page 5 of 16
Table 6. ADR550 Electrical Characteristics @ I
IN
= 50 A to 10 mA, T
A
= 25C, unless otherwise noted
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Output Voltage
Grade A
Grade B
V
O
4.980
4.090
5.000
5.000
5.020
5.010
V
V
Initial Accuracy
V
OERR
Grade A
0.4%
20
+20
mV
Grade B
0.2%
10
+10
mV
Temperature Coefficient
1
TCV
O
40C < T
A
< +85C
Grade A
25
70
ppm/C
Grade B
15
40
ppm/C
Output Voltage Change vs. I
IN
V
R
I
IN
= 0.1 mA to 10 mA
40C < T
A
< +85C
I
IN
= 1 mA to 10 mA
40C < T
A
< +85C
1
5
2
mV
mV
mV
Dynamic Output Impedance
(V
R
/I
R
)
I
IN
= 0.1 mA to 10 mA
0.2
Minimum Operating Current
I
IN
40C < T
A
< +85C
50
A
Voltage Noise
e
N p-p
0.1 Hz to 10 Hz
18
V p-p
Turn-On Settling Time
t
R
2
s
Output Voltage Hysteresis
V
O_HYS
I
IN
= 1 mA
40
ppm
1
Guaranteed by design
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