Ultralow Noise, High Accuracy
Voltage References
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
FEATURES
PIN CONFIGURATION
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
Maximum temperature coefficient (TCVOUT): 2 ppm/°C
Output noise (0.1 Hz to 10 Hz)
Less than 1 μV p-p at VOUT of 2.048 V typical
Initial output voltage error: ±0.02% (maximum)
Input voltage range: 3 V to 15 V
Operating temperature: −40°C to +125°C
Output current: +10 mA source/−10 mA sink
Low quiescent current: 950 μA (maximum)
Low dropout voltage: 300 mV at 2 mA (VOUT ≥ 3 V)
8-lead SOIC package
NC 1
8
TP
VIN 2
7
NC
6 VOUT
TOP VIEW
GND 4 (Not to Scale) 5 NC
NC 3
NOTES
1. NC = NO CONNECT.
2. TP = TEST PIN. DO NOT CONNECT.
10203-001
Data Sheet
Figure 1. 8-Lead SOIC
APPLICATIONS
Precision data acquisition systems
High resolution data converters
High precision measurement devices
Industrial instrumentation
Medical devices
Automotive battery monitoring
GENERAL DESCRIPTION
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 devices are high precision, low power, low noise
voltage references featuring ±0.02% maximum initial error,
excellent temperature stability, and low output noise.
This family of voltage references uses an innovative core
topology to achieve high accuracy while offering industry-leading
temperature stability and noise performance. The low, thermally
induced output voltage hysteresis and low long-term output
voltage drift of the devices also improve system accuracy over
time and temperature variations.
A maximum operating current of 950 μA and a maximum low
dropout voltage of 300 mV allow the devices to function very
well in portable equipment.
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 series of references is provided in an 8-lead SOIC
package and is available in a wide range of output voltages, all of
which are specified over the extended industrial temperature
range of −40°C to +125°C.
Table 1. Selection Guide
Model
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
Output Voltage (V)
2.048
2.5
3.0
3.3
4.096
5.0
Table 2. Voltage Reference Choices from Analog Devices
VOUT (V)
2.048
2.5
5.0
Low Cost/
Low Power
ADR360
ADR3420
ADR3425
AD1582
ADR361
ADR3450
AD1585
ADR365
ADR291
REF192
Ultralow
Noise
ADR430
ADR440
ADR431
ADR441
ADR03
AD780
ADR293
REF195
ADR435
ADR445
ADR02
AD586
Micropower
REF191
High Voltage,
High Performance
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.
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: 781.461.3113
©2012 Analog Devices, Inc. All rights reserved.
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
ADR4520 ..................................................................................... 11
Applications ....................................................................................... 1
ADR4525 ..................................................................................... 14
Pin Configuration ............................................................................. 1
ADR4530 ..................................................................................... 17
General Description ......................................................................... 1
ADR4533 ..................................................................................... 20
Revision History ............................................................................... 2
ADR4540 ..................................................................................... 23
Specifications..................................................................................... 3
ADR4550 ..................................................................................... 26
ADR4520 Electrical Characteristics........................................... 3
Terminology .................................................................................... 29
ADR4525 Electrical Characteristics........................................... 4
Theory of Operation ...................................................................... 30
ADR4530 Electrical Characteristics........................................... 5
Long-Term Drift ......................................................................... 30
ADR4533 Electrical Characteristics........................................... 6
Power Dissipation....................................................................... 30
ADR4540 Electrical Characteristics........................................... 7
Applications Information .............................................................. 31
ADR4550 Electrical Characteristics........................................... 8
Basic Voltage Reference Connection ....................................... 31
Absolute Maximum Ratings ............................................................ 9
Input and Output Capacitors .................................................... 31
Thermal Resistance ...................................................................... 9
Location of Reference in System .............................................. 31
ESD Caution .................................................................................. 9
Sample Applications ................................................................... 31
Pin Configuration and Function Descriptions ........................... 10
Outline Dimensions ....................................................................... 32
Typical Performance Characteristics ........................................... 11
Ordering Guide ............................................................................... 32
REVISION HISTORY
4/12—Revision 0: Initial Version
Rev. 0 | Page 2 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
SPECIFICATIONS
ADR4520 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3 V to 15 V, IL = 0 mA, TA = 25°C.
Table 3.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
2.048
B grade
±0.02
410
±0.04
820
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
1
30
100
700
2
4
10
80
120
950
1
1
90
−8
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 1 µF, CIN = 0.1 µF, RL = 1 kΩ
1.0
35.8
50
25
90
1
Rev. 0 | Page 3 of 32
100
Unit
V
%
μV
%
μV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
V
V
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4525 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3 V to 15 V, IL = 0 mA, TA = 25°C.
Table 4.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
2.500
B grade
±0.02
500
±0.04
1
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
1
30
60
700
2
4
10
80
120
950
500
500
90
−10
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 1 µF, CIN = 0.1 µF, RL = 1 kΩ
1.25
41.3
50
25
125
1
Rev. 0 | Page 4 of 32
100
Unit
V
%
μV
%
mV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
mV
mV
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4530 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3.1 V to 15 V, IL = 0 mA, TA = 25°C.
Table 5.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
3.000
B grade
±0.02
600
±0.04
1.2
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
1
30
60
700
2
4
10
80
120
950
100
300
90
−10
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
1.6
60
50
25
130
0.1
Rev. 0 | Page 5 of 32
100
Unit
V
%
μV
%
mV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
mV
mV
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4533 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 3.4 V to 15 V, IL = 0 mA, TA = 25°C.
Table 6.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
3.300
B grade
±0.02
660
±0.04
1.32
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN =1 kHz
1
30
60
700
2
4
10
80
120
950
100
300
90
−10
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
2.1
64.2
50
25
135
0.1
Rev. 0 | Page 6 of 32
100
Unit
V
%
µV
%
mV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
mV
mV
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4540 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 4.2 V to 15 V, IL = 0 mA, TA = 25°C.
Table 7.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
4.096
B grade
±0.02
820
±0.04
1.64
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
1
25
50
700
2
4
10
80
120
950
100
300
90
−10
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
2.7
83.5
50
25
155
0.1
Rev. 0 | Page 7 of 32
100
Unit
V
%
μV
%
mV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
mV
mV
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4550 ELECTRICAL CHARACTERISTICS
Unless otherwise noted, VIN = 5.1 V to 15 V, IL = 0 mA, TA = 25°C.
Table 8.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
Symbol
VOUT
VOUT_ERR
Test Conditions/Comments
Min
Typ
5.000
B grade
±0.02
1
±0.04
2
A grade
SOLDER HEAT SHIFT
TEMPERATURE COEFFICIENT
TCVOUT
LINE REGULATION
LOAD REGULATION
ΔVOUT/ΔVIN
ΔVOUT/ΔIL
QUIESCENT CURRENT
DROPOUT VOLTAGE
IQ
VDO
RIPPLE REJECTION RATIO
OUTPUT CURRENT CAPACITY
Sinking
Sourcing
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
RRR
IL
LONG-TERM DRIFT
TURN-ON SETTLING TIME
LOAD CAPACITANCE
ΔVOUT_LTD
tR
Max
±0.02
B grade, −40°C ≤ TA ≤ +125°C
A grade, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C
IL = 0 mA to +10 mA source, −40°C ≤ TA ≤ +125°C
IL = 0 mA to −10 mA sink, −40°C ≤ TA ≤ +125°C
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, no load
−40°C ≤ TA ≤ +125°C, IL = 2 mA
fIN = 1 kHz
1
25
35
700
2
4
10
80
120
950
100
300
90
−10
10
eNp-p
eN
ΔVOUT_HYS
0.1 Hz to 10.0 Hz
1 kHz
TA = temperature cycled from +25°C to −40°C to
+125°C and back to +25°C
1000 hours at 60°C
IL = 0 mA, CL = 0.1 µF, CIN = 0.1 µF, RL = 1 kΩ
2.8
95.3
50
25
160
0.1
Rev. 0 | Page 8 of 32
100
Unit
V
%
mV
%
mV
%
ppm/°C
ppm/°C
ppm/V
ppm/mA
ppm/mA
μA
mV
mV
dB
mA
mA
μV p-p
nV/√Hz
ppm
ppm
µs
µF
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
THERMAL RESISTANCE
Table 9.
θJA is specified for the worst-case conditions; that is, a device
soldered in a circuit board for surface-mount packages.
Parameter
Supply Voltage
Operating Temperature Range
Storage Temperature Range
Junction Temperature Range
Rating
16 V
−40°C to +125°C
−65°C to +150°C
−65°C to +150°C
Table 10. Thermal Resistance
Package Type
8-Lead SOIC
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
ESD CAUTION
Rev. 0 | Page 9 of 32
θJA
120
θJC
42
Unit
°C/W
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
NC 1
8
TP
VIN 2
7
NC
6 VOUT
TOP VIEW
GND 4 (Not to Scale) 5 NC
NOTES
1. NC = NO CONNECT.
2. TP = TEST PIN. DO NOT CONNECT.
Figure 2. Pin Configuration
Table 11. Pin Function Descriptions
Pin No.
1
2
3
4
5
6
7
8
Mnemonic
NC
VIN
NC
GND
NC
VOUT
NC
TP
Description
No Connect. This pin is not connected internally.
Input Voltage Connection.
No Connect. This pin is not connected internally.
Ground.
No Connect. This pin is not connected internally.
Output Voltage.
No Connect. This pin is not connected internally.
Test Pin. Do not connect.
Rev. 0 | Page 10 of 32
10203-002
NC 3
Data Sheet
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
ADR4520
2.0485
1.6
ADR4520
2.0484
ADR4520
1.4
+125°C
DROPOUT VOLTAGE (V)
2.0483
VOUT (V)
2.0482
2.0481
2.0480
2.0479
2.0478
1.2
+25°C
1.0
–40°C
0.8
0.6
0.4
2.0477
–30
–10
10
30
50
70
90
110
0
10203-101
2.0475
–50
130
TEMPERATURE (°C)
–10
0
2
4
6
8
10
ADR4520
30
LOAD REGULATION (ppm/mA)
2.0
1.5
1.0
25
20
15
10
10203-103
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–60
ΔVOUT_HYS (ppm)
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
10203-107
5
0.5
Figure 7. ADR4520 Load Regulation vs. Temperature (Sourcing)
Figure 4. ADR4520 Thermally Induced Output Voltage Hysteresis Distribution
100
ADR4520
ADR4520
90
LOAD REGULATION (ppm/mA)
VIN (5V/DIV)
1
CIN = 0.1µF
COUT = 0.1µF
RL = 1kΩ
2
CH1 5.00V
CH2 1.00V
M40.0µs
A CH1
9.10V
70
60
50
40
30
20
10
10203-104
VOUT (1V/DIV)
80
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 8. ADR4520 Load Regulation vs. Temperature (Sinking)
Figure 5. ADR4520 Output Voltage Start-Up Response
Rev. 0 | Page 11 of 32
10203-108
NUMBER OF UNITS
–2
35
2.5
0
–4
Figure 6. ADR4520 Dropout Voltage vs. Load Current
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
–6
ILOAD (mA)
Figure 3. ADR4520 Output Voltage vs. Temperature
3.5
–8
10203-106
0.2
2.0476
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.4
Data Sheet
1k
ADR4520
ADR4520
1.3
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
100
10
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
1
0.01
10203-109
0.4
–60
RIPPLE REJECTION RATIO (dB)
+125°C
ISY (µA)
100
1k
10k
100k
0
ADR4520
–10 CLOAD = 1µF
800
+25°C
10
Figure 12. ADR4520 Output Noise Spectral Density
ADR4520
600
1
FREQUENCY (Hz)
Figure 9. ADR4520 Line Regulation vs. Temperature
1000
0.1
10203-112
0.5
–40°C
400
200
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
VIN (V)
–120
10
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 13. ADR4520 Ripple Rejection Ratio vs. Frequency
Figure 10. ADR4520 Supply Current vs. Supply Voltage
120
100
ADR4520
T
ADR4520
100
60
2
40
OUTPUT AC
20
0
0.4
0.7
1.0
1.3
1.6
1.9
2.2
2.5
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
2.8
CIN = 0.1µF
COUT = 1µF
CH1 1.00V
Figure 11. ADR4520 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
CH2 1.00mV
B
W
M40.0µs
T 12.0%
A CH1
Figure 14. ADR4520 Line Transient Response
Rev. 0 | Page 12 of 32
7.02V
10203-114
1
10203-111
OCCURRENCE
INPUT
80
10203-113
0
10203-110
–110
0
Data Sheet
60
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
80
ADR4520
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
40
VOUT DRIFT (ppm)
OUTPUT IMPEDANCE (Ω)
50
RL = 1kΩ
CL = 1µF
RL = 1kΩ
CL = 10µF
30
RL = 100kΩ
CL = 10µF
20
RL = 100kΩ
CL = 1µF
20
0
–20
–40
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
OCCURRENCE
10
8
6
4
OUTPUT VOLTAGE (%)
10203-116
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
2
0
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 17. ADR4520 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 15. ADR4520 Output Impedance vs. Frequency
12
–80
Figure 16. ADR4520 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 13 of 32
10203-117
0
10
10203-115
–60
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4525
2.5005
1.4
ADR4525
ADR4525
2.5004
1.2
+125°C
+25°C
DROPOUT VOLTAGE (V)
2.5003
VOUT (V)
2.5002
2.5001
2.5000
2.4999
2.4998
1.0
0.8
–40°C
0.6
0.4
2.4997
0.2
–30
–10
10
30
50
70
90
110
0
–15
10203-201
2.4995
–50
130
TEMPERATURE (°C)
10
15
ADR4525
30
LOAD REGULATION (ppm/mA)
2.0
1.5
1.0
25
20
15
10
10203-203
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–60
ΔVOUT_HYS (ppm)
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 19. ADR4525 Thermally Induced Output Voltage Hysteresis Distribution
10203-207
5
0.5
Figure 22. ADR4525 Load Regulation vs. Temperature (Sourcing)
100
ADR4525
ADR4525
90
1
LOAD REGULATION (ppm/mA)
VIN (5V/DIV)
VOUT (1V/DIV)
80
70
60
50
40
30
20
2
CH2 1.00V
M40.0µs
A CH1
9.10V
10203-204
CH1 5.00V
10
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 20. ADR4525 Output Voltage Start-Up Response
Figure 23. ADR4525 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 14 of 32
10203-208
NUMBER OF UNITS
5
35
2.5
0
0
Figure 21. ADR4525 Dropout Voltage vs. Load Current
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
–5
ILOAD (mA)
Figure 18. ADR4525 Output Voltage vs. Temperature
3.5
–10
10203-206
2.4996
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.4
1k
ADR4525
ADR4525
1.3
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
100
10
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
1
0.01
10203-209
0.4
–60
100
1k
10k
100k
0
ADR4525
–10
RIPPLE REJECTION RATIO (dB)
800
700
600
+25°C –40°C
500
400
300
200
100
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
VIN (V)
10203-210
–110
0
–120
10
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 28. ADR4525 Ripple Rejection Ratio vs. Frequency
Figure 25. ADR4525 Supply Current vs. Supply Voltage
160
100
ADR4525
T
ADR4525
140
120
80
2
60
OUTPUT AC
1
40
20
0
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
3.0
CH1 1.00V
Figure 26. ADR4525 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
CH2 1.00mV
B
W
M200µs
T 10.0%
A CH1
Figure 29. ADR4525 Line Transient Response
Rev. 0 | Page 15 of 32
4.08V
10203-214
CIN = 0.1µF
COUT = 1µF
10203-211
OCCURRENCE
INPUT
100
10203-213
ISY (µA)
10
Figure 27. ADR4525 Output Noise Spectral Density
ADR4525
+125°C
1
FREQUENCY (Hz)
Figure 24. ADR4525 Line Regulation vs. Temperature
900
0.1
10203-212
0.5
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
80
ADR4525
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
RL = 1kΩ
CL = 1µF
60
VOUT DRIFT (ppm)
OUTPUT IMPEDANCE (Ω)
70
50
RL = 1kΩ
CL = 10µF
40
RL = 100kΩ
CL = 1µF
30
RL = 100kΩ
CL = 10µF
20
–20
100
1k
10k
100k
1M
FREQUENCY (Hz)
10203-215
–60
0
10
12
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
6
4
10203-216
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
2
OUTPUT VOLTAGE (%)
–80
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 32. ADR4525 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 30. ADR4525 Output Impedance vs. Frequency
OCCURRENCE
0
–40
10
0
20
Figure 31. ADR4525 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 16 of 32
10203-217
80
Data Sheet
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4530
3.0005
0.0009
ADR4530
3.0004
0.0008
3.0003
0.0007
–40°C
3.0001
3.0000
0.0005
0.0004
2.9999
0.0003
2.9998
0.0002
2.9997
–30
–10
10
30
50
70
90
110
0
0
10203-301
2.9995
–50
130
TEMPERATURE (°C)
4
5
6
7
8
9
10
11
1.4
12
13
ADR4530
DROPOUT VOLTAGE (V)
1.2
2.5
2.0
1.5
1.0
+125°C
1.0
+25°C
0.8
–40°C
0.6
0.4
10203-303
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–15
ΔVOUT_HYS (ppm)
–5
0
5
10
15
ILOAD (mA)
Figure 34. ADR4530 Thermally Induced Output Voltage Hysteresis Distribution
VIN (5V/DIV)
–10
10203-306
0.2
0.5
0
3
Figure 36. ADR4530 Supply Current vs. Supply Voltage
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
2
VIN (V)
Figure 33. ADR4530 Output Voltage vs. Temperature
3.5
1
10203-305
0.0001
2.9996
Figure 37. ADR4530 Dropout Voltage vs. Load Current
35
ADR4530
ADR4530
LOAD REGULATION (ppm/mA)
30
1
2
VOUT (1V/DIV)
CH1 5.00V
CH2 1.00V
M40.0µs
A CH1
3.10V
20
15
10
5
10203-304
CIN = 0.1µF
COUT = 0.1µF
RL = 1kΩ
25
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 35. ADR4530 Output Voltage Start-Up Response
Figure 38. ADR4530 Load Regulation vs. Temperature (Sourcing)
Rev. 0 | Page 17 of 32
10203-307
NUMBER OF UNITS
+25°C
0.0006
ISY (µA)
VOUT (V)
3.0002
ADR4530
+125°C
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
100
100
ADR4530
90
80
80
70
70
50
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
0
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
Figure 39. ADR4530 Load Regulation vs. Temperature (Sinking)
1.4
10203-311
–40
2.9
10
0
–60
2.7
10
2.5
20
2.3
30
20
2.1
30
1.9
40
1.7
40
60
1.5
50
1.1
60
1.3
OCCURRENCE
90
10203-308
LOAD REGULATION (ppm/mA)
ADR4530
Figure 42. ADR4530 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
1k
ADR4530
ADR4530
1.3
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
1.2
1.1
1.0
0.9
0.8
0.7
0.6
100
10
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
1
0.01
10203-309
0.4
–60
100
1k
10k
100k
0
ADR4530
–10
RIPPLE REJECTION RATIO (dB)
800
700
+125°C
600
+25°C
500
400
300
200
100
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
0
1
2
3
4
5
6
7
8
9
10
11
12
VIN (V)
13
–120
10
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 44. ADR4530 Ripple Rejection Ratio vs. Frequency
Figure 41. ADR4530 Supply Current vs. Supply Voltage
Rev. 0 | Page 18 of 32
10203-313
–110
10203-310
ISY (µA)
10
Figure 43. ADR4530 Output Noise Spectral Density
ADR4530
–40°C
1
FREQUENCY (Hz)
Figure 40. ADR4530 Line Regulation vs. Temperature
900
0.1
10203-312
0.5
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
12
ADR4530
T
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
OCCURRENCE
INPUT
2
8
6
4
OUTPUT AC
2
B
CH2 1.00mV
W
M200µs
T 10.0%
A CH1
7.02V
0
OUTPUT VOLTAGE (%)
Figure 45. ADR4530 Line Transient Response
60
Figure 47. ADR4530 Output Voltage Drift Distribution After Reflow (SHR Drift)
80
ADR4530
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
30
RL = 1kΩ
CL = 10µF
VOUT DRIFT (ppm)
40
RL = 1kΩ
CL = 1µF
RL = 100kΩ
CL = 10µF
RL = 100kΩ
CL = 1µF
20
0
–20
–40
10
0
1
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
10M
–80
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 48. ADR4530 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 46. ADR4530 Output Impedance vs. Frequency
Rev. 0 | Page 19 of 32
10203-317
–60
10203-315
OUTPUT IMPEDANCE (Ω)
50
20
10203-316
CH1 1.00V
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
1
10203-314
CIN = 0.1µF
COUT = 1µF
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4533
3.3010
1.0
ADR4533
ADR4533
3.3008
+125°C
3.3006
DROPOUT VOLTAGE (V)
0.8
VOUT (V)
3.3004
3.3002
3.3000
3.2998
3.2996
+25°C
0.6
–40°C
0.4
0.2
3.2994
–30
–10
10
30
50
70
90
110
0
–15
10203-401
3.2990
–50
130
TEMPERATURE (°C)
10
15
ADR4533
30
LOAD REGULATION (ppm/mA)
2.0
1.5
1.0
25
20
15
10
10203-403
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–60
ΔVOUT_HYS (ppm)
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 53. ADR4533 Load Regulation vs. Temperature (Sourcing)
Figure 50. ADR4533 Thermally Induced Output Voltage Hysteresis Distribution
VIN (5V/DIV)
–40
10203-407
5
0.5
100
ADR4533
ADR4533
LOAD REGULATION (ppm/mA)
90
1
2
CIN = 0.1µF
COUT = 0.1µF
RL = 1kΩ
CH1 5.00V
CH2 1.00V
M40.0µs
A CH1
3.10V
70
60
50
40
30
20
10
10203-404
VOUT (1V/DIV)
80
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 51. ADR4533 Output Voltage Start-Up Response
Figure 54. ADR4533 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 20 of 32
10203-408
NUMBER OF UNITS
5
35
2.5
0
0
Figure 52. ADR4533 Dropout Voltage vs. Load Current
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
–5
ILOAD (mA)
Figure 49. ADR4533 Output Voltage vs. Temperature
3.5
–10
10203-406
3.2992
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.2
1k
ADR4533
ADR4533
1.1
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
100
10
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
1
0.01
10203-409
0.2
–60
10
100
1k
10k
100k
Figure 58. ADR4533 Output Noise Spectral Density
0
ADR4533
1
FREQUENCY (Hz)
Figure 55. ADR4533 Line Regulation vs. Temperature
900
0.1
10203-412
0.3
+125°C
ADR4533
–10
800
RIPPLE REJECTION RATIO (dB)
–20
700
+25°C
ISY (µA)
600
–40°C
500
400
300
200
–30
–40
–50
–60
–70
–80
–90
–100
–110
100
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
VIN (V)
–130
0.01
0.1
1
10
100
1k
10k
100k
FREQUENCY (kHz)
Figure 56. ADR4533 Supply Current vs. Supply Voltage
Figure 59. ADR4533 Ripple Rejection Ratio vs. Frequency
60
ADR4533
T
ADR4533
50
INPUT
30
2
20
OUTPUT AC
10
10203-411
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
0
CH1 1.00V
CH2 1.00mV
B
W
M200µs
T 12.0%
A CH1
Figure 60. ADR4533 Line Transient Response
Figure 57. ADR4533 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
Rev. 0 | Page 21 of 32
7.02V
10203-414
CIN = 0.1µF
COUT = 1µF
1
BIN
OCCURRENCE
40
10203-413
0
10203-410
–120
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
60
80
ADR4533
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
40
30
VOUT DRIFT (ppm)
OUTPUT IMPEDANCE (Ω)
50
RL = 1kΩ
CL = 1µF
RL = 1kΩ
CL = 10µF
20
Data Sheet
RL = 100kΩ
CL = 10µF
RL = 100kΩ
CL = 1µF
20
0
–20
–40
10
1
10
100
1k
10k
100k
1M
10203-415
0
10M
FREQUENCY (Hz)
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
OCCURRENCE
10
8
6
4
OUTPUT VOLTAGE (%)
10203-416
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
2
0
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 63. ADR4533 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 61. ADR4533 Output Impedance vs. Frequency
12
–80
Figure 62. ADR4533 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 22 of 32
10203-417
–60
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
ADR4540
4.0970
0.8
ADR4540
ADR4540
0.7
+125°C
DROPOUT VOLTAGE (V)
VOUT (V)
4.0965
4.0960
4.0955
0.6
+25°C
0.5
–40°C
0.4
0.3
0.2
–30
–10
10
30
50
70
90
110
0
–15
10203-501
4.0950
–50
130
TEMPERATURE (°C)
10
15
ADR4540
30
LOAD REGULATION (ppm/mA)
2.0
1.5
1.0
25
20
15
10
10203-503
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–60
ΔVOUT_HYS (ppm)
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 68. ADR4540 Load Regulation vs. Temperature (Sourcing)
Figure 65. ADR4540 Thermally Induced Output Voltage Hysteresis Distribution
VIN (5V/DIV)
–40
10203-507
5
0.5
100
ADR4540
ADR4540
LOAD REGULATION (ppm/mA)
90
1
2
CIN = 0.1µF
COUT = 0.1µF
RL = 1kΩ
CH1 5.00V
CH2 1.00V
M40.0µs
A CH1
3.10V
70
60
50
40
30
20
10
10203-504
VOUT (1V/DIV)
80
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 66. ADR4540 Output Voltage Start-Up Response
Figure 69. ADR4540 Load Regulation vs. Temperature (Sinking)
Rev. 0 | Page 23 of 32
10203-508
NUMBER OF UNITS
5
35
2.5
0
0
Figure 67. ADR4540 Dropout Voltage vs. Load Current
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
–5
ILOAD (mA)
Figure 64. ADR4540 Output Voltage vs. Temperature
3.5
–10
10203-506
0.1
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.0
Data Sheet
1k
ADR4540
ADR4540
0.9
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
100
10
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
1
0.01
10203-509
0
–60
+125°C
100
1k
10k
100k
ADR4540
–10
RIPPLE REJECTION RATIO (dB)
800
700
+25°C
600
–40°C
500
400
300
200
100
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
VIN (V)
10203-510
–110
0
–120
10
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
Figure 74. ADR4540 Ripple Rejection Ratio vs. Frequency
Figure 71. ADR4540 Supply Current vs. Supply Voltage
70
ADR4540
T
ADR4540
60
INPUT
40
30
2
OUTPUT AC
20
10
Figure 72. ADR4540 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
CH1 1.00V
CH2 1.00mV
B
W
M200µs
T 12.0%
A CH1
Figure 75. ADR4540 Line Transient Response
Rev. 0 | Page 24 of 32
7.02V
10203-514
10203-511
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
3.9
3.7
3.5
3.3
3.1
2.9
2.7
2.5
2.3
2.1
0
CIN = 0.1µF
COUT = 1µF
1
BIN
OCCURRENCE
50
10203-513
ISY (µA)
10
Figure 73. ADR4540 Output Noise Spectral Density
0
ADR4540
1
FREQUENCY (Hz)
Figure 70. ADR4540 Line Regulation vs. Temperature
900
0.1
10203-512
0.1
Data Sheet
60
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
80
ADR4540
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
40
RL = 100kΩ
CL = 10µF
30
RL = 100kΩ
CL = 1µF
RL = 1kΩ
CL = 10µF
20
VOUT DRIFT (ppm)
OUTPUT IMPEDANCE (Ω)
50
RL = 1kΩ
CL = 1µF
20
0
–20
–40
10
1
10
100
1k
10k
100k
1M
10203-515
0
10M
FREQUENCY (Hz)
Figure 76. ADR4540 Output Impedance vs. Frequency
12
OCCURRENCE
8
6
4
OUTPUT VOLTAGE (%)
10203-516
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
2
0
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 78. ADR4540 Typical Long-Term Output Voltage Drift
(1000 Hours)
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
–80
Figure 77. ADR4540 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 25 of 32
10203-517
–60
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
ADR4550
5.0010
0.7
ADR4550
ADR4550
+125°C
0.6
+25°C
DROPOUT VOLTAGE (V)
VOUT (V)
5.0005
5.0000
4.9995
0.5
0.4
–40°C
0.3
0.2
–30
–10
10
30
50
70
90
110
0
–15
10203-601
4.9990
–50
130
TEMPERATURE (°C)
10
15
ADR4550
30
LOAD REGULATION (ppm/mA)
2.0
1.5
1.0
25
20
15
10
10203-603
–200
–190
–180
–170
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
0
–60
ΔVOUT_HYS (ppm)
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 80. ADR4550 Thermally Induced Output Voltage Hysteresis Distribution
10203-607
5
0.5
Figure 83. ADR4550 Load Regulation vs. Temperature (Sourcing)
100
ADR4550
ADR4550
90
LOAD REGULATION (ppm/mA)
VIN (5V/DIV)
VOUT (1V/DIV)
1
80
70
60
50
40
30
20
2
CH2 1.00V
M40.0µs
A CH1
9.10V
10203-604
CH1 5.00V
10
0
–60
–40
–20
0
20
40
60
80
100
120
140
TEMPERATURE (°C)
Figure 84. ADR4550 Load Regulation vs. Temperature (Sinking)
Figure 81. ADR4550 Output Voltage Start-Up Response
Rev. 0 | Page 26 of 32
10203-608
NUMBER OF UNITS
5
35
2.5
0
0
Figure 82. ADR4550 Dropout Voltage vs. Load Current
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
3.0
–5
ILOAD (mA)
Figure 79. ADR4550 Output Voltage vs. Temperature
3.5
–10
10203-606
0.1
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
1.0
1k
ADR4550
ADR4550
0.9
NOISE DENSITY (nV rms/ Hz)
LINE REGULATION (ppm/V)
0.8
0.7
0.6
0.5
0.4
0.3
0.2
100
10
0
50
100
150
TEMPERATURE (°C)
1
0.01
10203-609
0
–50
ADR4550
1
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 85. ADR4550 Line Regulation vs. Temperature
900
0.1
10203-612
0.1
Figure 88. ADR4550 Output Noise Spectral Density
0
+125°C
ADR4550
RIPPLE REJECTION RATIO (dB)
800
700
+25°C
ISY (µA)
600
–40°C
500
400
300
200
–20
–40
–60
–80
–100
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16
VIN (V)
–120
0.01
1
10
100
1k
10k
100k
FREQUENCY (Hz)
Figure 86. ADR4550 Supply Current vs. Supply Voltage
9
0.1
Figure 89. ADR4550 Ripple Rejection Ratio vs. Frequency
ADR4550
T
ADR4550
8
7
5
4
2
3
OUTPUT AC
2
0
1
1.9
2.1
2.3
2.5
2.7
2.9
3.1
3.3
3.5
OUTPUT VOLTAGE NOISE DISTRIBUTION (µV p-p)
3.7
CH1 1.00V
Figure 87. ADR4550 Output Voltage Noise
(Maximum Amplitude from 0.1 Hz to 10 Hz)
CH2 1.00mV
B
W
M200µs
T 12.0%
A CH1
Figure 90. ADR4550 Line Transient Response
Rev. 0 | Page 27 of 32
7.02V
10203-614
CIN = 0.1µF
COUT = 1µF
1
10203-611
OCCURRENCE
INPUT
6
10203-613
0
10203-610
100
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
120
ADR4520
ADR4525
60 ADR4530
ADR4533
ADR4540
40 ADR4550
RL = 100kΩ
CL = 1µF
100
80
RL = 1kΩ
CL = 0.1µF
60
40
RL = 1kΩ
CL = 1µF
–20
100
1k
10k
100k
1M
FREQUENCY (Hz)
10203-615
–60
0
10
12
ADR4520
ADR4525
ADR4530
ADR4533
ADR4540
ADR4550
10
8
6
4
10203-616
–0.060
–0.055
–0.050
–0.045
–0.040
–0.035
–0.030
–0.025
–0.020
–0.015
–0.010
–0.005
0
0.005
0.010
0.015
0.020
0.025
0.030
0.035
0.040
0.045
0.050
0.055
0.060
2
OUTPUT VOLTAGE (%)
–80
0
100
200
300
400
500
600
700
800
900
1000
DURATION (Hours)
Figure 93. ADR4550 Typical Long-Term Output Voltage Drift
(1000 Hours)
Figure 91. ADR4550 Output Impedance vs. Frequency
OCCURRENCE
0
–40
20
0
20
Figure 92. ADR4550 Output Voltage Drift Distribution After Reflow (SHR Drift)
Rev. 0 | Page 28 of 32
10203-617
OUTPUT IMPEDANCE (Ω)
80
RL = 100kΩ
CL = 0.1µF
ADR4550
VOUT DRIFT (ppm)
140
Data Sheet
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
TERMINOLOGY
Dropout Voltage (VDO)
Dropout voltage, sometimes referred to as supply voltage
headroom or supply output voltage differential, is defined as the
minimum voltage differential between the input and output such
that the output voltage is maintained to within 0.1% accuracy.
VDO = (VIN − VOUT)min|IL = constant
Because the dropout voltage depends on the current passing
through the device, it is always specified for a given load current.
In series mode devices, the dropout voltage typically increases
proportionally to the load current (see Figure 6, Figure 21,
Figure 37, Figure 52, Figure 67, and Figure 82).
Temperature Coefficient (TCVOUT)
The temperature coefficient relates the change in the output
voltage to the change in the ambient temperature of the device, as
normalized by the output voltage at 25°C. This parameter is
determined by the box method, which is represented by the
following equation:
TCVOUT =
max{VOUT (T1 , T2 , T3 )} − min{VOUT (T1 , T2 , T3 )}
VOUT (T2 ) × (T3 − T1 )
× 10 6
where:
TCVOUT is expressed in ppm/°C.
VOUT(Tx) is the output voltage at Temperature Tx.
T1 = −40°C.
T2 = +25°C.
T3 = +125°C.
This three-point method ensures that TCVOUT accurately portrays
the maximum difference between any of the three temperatures
at which the output voltage of the part is measured.
The TCVOUT for the ADR4520/ADR4525/ADR4530/ADR4533/
ADR4540/ADR4550 is fully tested over three temperatures:
−40°C, +25°C, and +125°C.
Long-Term Stability (ΔVOUT_LTD)
Long-term stability refers to the shift in the output voltage at 60°C
after 1000 hours of operation in a 60°C environment. The ambient
temperature is kept at 60°C to ensure that the temperature chamber
does not switch randomly between heating and cooling, which
can cause instability over the 1000 hour measurement. This is
also expressed as either a shift in voltage or a difference in ppm
from the nominal output.
∆VOUT _ LTD =
VOUT _ 25°C −VOUT _ TC
VOUT _ 25°C
VOUT (t 0 )
× 10 6 [ppm]
where:
VOUT(t0) is the VOUT at 60°C at Time 0.
VOUT(t1) is the VOUT at 60°C after 1000 hours of operation at 60°C.
Line Regulation
Line regulation refers to the change in output voltage in response
to a given change in input voltage and is expressed in percent
per volt, ppm per volt, or μV per volt change in input voltage.
This parameter accounts for the effects of self-heating.
Load Regulation
Load regulation refers to the change in output voltage in response
to a given change in load current and is expressed in μV per mA,
ppm per mA, or ohms of dc output resistance. This parameter
accounts for the effects of self-heating.
Solder Heat Resistance (SHR) Shift
SHR shift refers to the permanent shift in output voltage that is
induced by exposure to reflow soldering and is expressed in units
of ppm. This shift is caused by changes in the stress exhibited
on the die by the package materials when these materials are
exposed to high temperatures. This effect is more pronounced
in lead-free soldering processes due to higher reflow temperatures.
Thermally Induced Output Voltage Hysteresis (ΔVOUT_HYS)
Thermally induced output voltage hysteresis represents the
change in the output voltage after the device is exposed to a
specified temperature cycle. This is expressed as either a shift in
voltage or a difference in ppm from the nominal output.
∆VOUT _ HYS =
VOUT (t 1 ) − VOUT (t 0 )
×106 [ppm]
where:
VOUT_25°C is the output voltage at 25°C.
VOUT_TC is the output voltage after temperature cycling.
Rev. 0 | Page 29 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
THEORY OF OPERATION
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 series of references uses a unique core topology for
extremely high accuracy, stability, and noise performance.
Effect of Long-Term Drift on Voltage References, at www.analog.com
for more information regarding the effects of long-term drift
and how it can be minimized.
Three parameters contribute to the accuracy of the dc output of
a voltage reference: initial accuracy, temperature coefficient, and
long-term drift. With an outstanding guaranteed initial error of
0.02% and a low temperature coefficient of 2 ppm/°C maximum,
this series of voltage references is perfect for high precision
applications. The industry-leading long-term stability of the
devices means that systems need less frequent field calibration
and that there is a reduction in the costly preshipment system
burn-in time.
POWER DISSIPATION
LONG-TERM DRIFT
One of the key parameters of the ADR4520/ADR4525/ADR4530/
ADR4533/ADR4540/ADR4550 references is long-term
stability—the output drift over time that the device is powered
up. Regardless of output voltage, internal testing during
development showed a typical drift of approximately 25 ppm
after 1000 hours of continuous, nonloaded operation in a 60°C
extremely stable temperature controlled environment.
Note that the majority of the long-term drift typically occurs in
the first 200 hours to 300 hours of operation. For systems that
require highly stable output voltages over long periods of time,
the designer should consider burning in the devices prior to use
to minimize the amount of output drift exhibited by the
reference over time. See the AN-713 Application Note, The
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 voltage references are capable of sourcing and sinking
up to 10 mA of load current at room temperature across the rated
input voltage range. However, when used in applications subject
to high ambient temperatures, the input voltage and load current
should be carefully monitored to ensure that the device does not
exceeded its maximum power dissipation rating. The maximum
power dissipation of the device can be calculated via the
following equation:
PD =
TJ − TA
θ JA
where:
PD is the device power dissipation.
TJ is the device junction temperature.
TA is the ambient temperature.
θJA is the package (junction-to-air) thermal resistance.
Due to this relationship, acceptable load current in high
temperature conditions may be less than the maximum current
sourcing capability of the device. In no case should the part be
operated outside of its maximum power rating because doing so
may result in premature failure or permanent damage to the device.
Rev. 0 | Page 30 of 32
Data Sheet
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
APPLICATIONS INFORMATION
BASIC VOLTAGE REFERENCE CONNECTION
SAMPLE APPLICATIONS
The circuit shown in Figure 94 illustrates the basic configuration
for the ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 family of voltage references.
Bipolar Output Reference
VIN
VREF
10203-054
2
VOUT 6
VIN
+5V
R1
10kΩ
Figure 94. ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Simplified Schematic
1µF
0.1µF
ADR4550
0.1µF
R2
10kΩ
INPUT AND OUTPUT CAPACITORS
GND 4
+15V
Input Capacitors
–5V
ADA4000-1
A 1 μF to 10 μF electrolytic or ceramic capacitor can be connected
to the input to improve transient response in applications where
the supply voltage may fluctuate. An additional 0.1 μF ceramic
capacitor should be connected in parallel to reduce supply noise.
R3
5kΩ
10203-055
GND
VIN
–15V
Figure 95. ADR4550 Bipolar Output Reference
Output Capacitors
Boosted Output Current Reference
An output capacitor is required for stability and to filter out low
level voltage noise. The minimum value of the output capacitor
is shown in Table 12.
Figure 96 shows a configuration for obtaining higher current
drive capability from the ADR4520/ADR4525/ADR4530/
ADR4533/ADR4540/ADR4550 references without sacrificing
accuracy. The op amp regulates the current flow through the
MOSFET until VOUT equals the output voltage of the reference;
current is then drawn directly from VIN instead of from the
reference itself, allowing increased current drive capability.
Table 12. Minimum COUT Value
Part Number
ADR4520, ADR4525
ADR4530, ADR4533,
ADR4540, ADR4550
Minimum COUT Value
1.0 µF
0.1 µF
VIN
+16V
U6
An additional 1 μF to 10 μF electrolytic or ceramic capacitor can be
added in parallel to improve transient performance in response to
sudden changes in load current; however, the designer should keep
in mind that doing so will increase the turn-on time of the device.
2
R1
100Ω
VOUT 6
2N7002
AD8663
VOUT
1µF 0.1µF
LOCATION OF REFERENCE IN SYSTEM
The ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/
ADR4550 reference should be placed as close to the load as possible
to minimize the length of the output traces and, therefore, the error
introduced by the voltage drop. Current flowing through a PCB
trace produces an IR voltage drop; with longer traces, this drop
can reach several millivolts or more, introducing considerable
error into the output voltage of the reference. A 1 inch long, 5 mm
wide trace of 1 ounce copper has a resistance of approximately
100 mΩ at room temperature; at a load current of 10 mA, this
can introduce a full millivolt of error.
VIN
ADR4520/ADR4525/
ADR4530/ADR4533/
ADR4540/ADR4550
GND 4
RL
200Ω
CL
PART
NUMBER
MINIMUM
CL
ADR4520,
ADR4525
1.0µF
ADR4530,
ADR4533,
ADR4540,
ADR4550
0.1µF
CL
0.1µF
10203-056
BAND GAP
Figure 95 shows a bipolar reference configuration. By connecting
the output of the ADR4550 to the inverting terminal of an
operational amplifier, it is possible to obtain both positive and
negative reference voltages. R1 and R2 must be matched as closely
as possible to ensure minimal difference between the negative
and positive outputs. Resistors with low temperature coefficients
must also be used if the circuit is used in environments with large
temperature swings; otherwise, a voltage difference develops
between the two outputs as the ambient temperature changes.
Figure 96. Boosted Output Current Reference
Because the current-sourcing capability of this circuit depends only
on the ID rating of the MOSFET, the output drive capability can
be adjusted to the application simply by choosing an appropriate
MOSFET. In all cases, the VOUT pin should be tied directly to the
load device to maintain maximum output voltage accuracy.
Rev. 0 | Page 31 of 32
ADR4520/ADR4525/ADR4530/ADR4533/ADR4540/ADR4550
Data Sheet
OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
1
5
6.20 (0.2441)
5.80 (0.2284)
4
1.27 (0.0500)
BSC
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
SEATING
PLANE
0.50 (0.0196)
0.25 (0.0099)
1.75 (0.0688)
1.35 (0.0532)
0.51 (0.0201)
0.31 (0.0122)
45°
8°
0°
0.25 (0.0098)
0.17 (0.0067)
1.27 (0.0500)
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
012407-A
8
4.00 (0.1574)
3.80 (0.1497)
Figure 97. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
ORDERING GUIDE
Model 1
ADR4520ARZ
ADR4520ARZ-R7
ADR4520BRZ
ADR4520BRZ-R7
ADR4525ARZ
ADR4525ARZ-R7
ADR4525BRZ
ADR4525BRZ-R7
ADR4530ARZ
ADR4530ARZ-R7
ADR4530BRZ
ADR4530BRZ-R7
ADR4533ARZ
ADR4533ARZ-R7
ADR4533BRZ
ADR4533BRZ-R7
ADR4540ARZ
ADR4540ARZ-R7
ADR4540BRZ
ADR4540BRZ-R7
ADR4550ARZ
ADR4550ARZ-R7
ADR4550BRZ
ADR4550BRZ-R7
1
Temperature Range
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
Package Description
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
8-Lead SOIC_N
Z = RoHS Compliant Part.
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registered trademarks are the property of their respective owners.
D10203-0-4/12(0)
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Package Option
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
Ordering Quantity
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000
98
1,000