ANALOG DEVICES ADR3525, ADR3530, ADR3533, ADR3540, ADR3550 Service Manual
Micropower, High Accuracy
Data Sheet
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
FEATURES
Maximum temperature coefficient: 5 ppm/°C (B grade)
Low long-term drift (LTD): 30 ppm (initial 1 khr typical)
Initial output voltage error: ±0.1% (maximum)
Operating temperature range: −40°C to +125°C
Output current: +10 mA source/−3 mA sink
Low quiescent current: 100 μA (maximum)
Low dropout voltage: 250 mV at 2 mA
Output voltage noise (0.1 Hz to 10 Hz): 29 μV p-p at
4.096 V (typical)
Qualified for automotive applications
APPLICATIONS
Automotive battery monitors
Portable instrumentation
Process transmitters
Remote sensors
Medical instrumentation
Voltage References
PIN CONFIGURATION
ENABLE
GND SENSE
GND FORCE
NOTES
1. NC = NO CONNECT. DO NOT
CONNECT TO THI S PIN.
1
ADR35xx
2
TOP VIEW
3
(Not to Scale)
4
NC
Figure 1. 8-Lead MSOP (RM-8 Suffix)
8
V
IN
V
SENSE
7
OUT
V
FORCE
6
OUT
5
NC
09594-001
GENERAL DESCRIPTION
The ADR3525W, ADR3530W, ADR3533W, ADR3540W, and
ADR3550W are low cost, low power, high precision CMOS
voltage references, featuring a maximum temperature coefficient (TC) of 5 ppm/°C (B grade), 8 ppm/°C (A grade), low
operating current, and low output noise in an 8-lead MSOP
package. For high accuracy, the output voltage and temperature
coefficient are trimmed digitally during final assembly using the
Analog Devices, Inc., patented DigiTrim® technology.
The low output voltage hysteresis and low long-term output
voltage drift improve lifetime system accuracy.
These CMOS references are available in five output voltages, all
of which are specified over the automotive temperature range of
−40°C to +125°C.
Table 1. Selection Guide
Model Output Voltage (V) Input Voltage Range ( V)
ADR3525W 2.500 2.7 to 5.5
ADR3530W 3.000 3.2 to 5.5
ADR3533W 3.300 3.5 to 5.5
ADR3540W 4.096 4.3 to 5.5
ADR3550W 5.000 5.2 to 5.5
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Pin Configuration ............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
ADR3525 Electrical Characteristics .......................................... 3
ADR3530 Electrical Characteristics .......................................... 4
ADR3533 Electrical Characteristics .......................................... 5
ADR3540 Electrical Characteristics .......................................... 6
ADR3550 Electrical Characteristics .......................................... 7
Absolute Maximum Ratings ............................................................ 8
Thermal Resistance ...................................................................... 8
ESD Caution .................................................................................. 8
Pin Configuration and Function Descriptions ............................. 9
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 16
Theory of Operation ...................................................................... 17
Long-Term Output Voltage Drift ............................................. 17
Power Dissipation....................................................................... 17
Applications Information .............................................................. 18
Basic Voltage Reference Connection ....................................... 18
Input and Output Capacitors .................................................... 18
4-Wire Kelvin Connections ...................................................... 18
VIN Slew Rate Considerations ................................................... 18
Shutdown/Enable Feature ......................................................... 18
Sample Applications ................................................................... 19
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 20
Automotive Products ................................................................. 20
REVISION HISTORY
9/11—Revision 0: Initial Version
Rev. 0 | Page 2 of 20
Data Sheet ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
SPECIFICATIONS
ADR3525 ELECTRICAL CHARACTERISTICS
VIN = 2.7 V to 5.5 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
OUTPUT VOLTAGE V
INITIAL OUTPUT VOLTAGE ERROR V
±2.5 mV
TEMPERATURE COEFFICIENT TCV
A Grade 2.5 8 ppm/°C
B Grade 2.5 5 ppm/°C
LINE REGULATION ∆V
V
LOAD REGULATION ∆V
Sourcing
Sinking
OUTPUT CURRENT CAPACITY IL
Sourcing VIN = 3.0 V to 5.5 V 10 mA
Sinking VIN = 3.0 V to 5.5 V −3 mA
QUIESCENT CURRENT IQ
Normal Operation ENABLE ≥ VIN × 0.85 85 A
ENABLE = VIN, −40°C ≤ TA ≤ +125°C 100 A
Shutdown ENABLE ≤ 0.7 V 5 A
DROPOUT VOLTAGE1 V
I
ENABLE PIN
Shutdown Voltage VL 0 0.7 V
ENABLE Voltage VH V
ENABLE Pin Leakage Current IEN ENABLE = VIN, TA = −40°C ≤ TA ≤ +125°C 1 3 A
OUTPUT VOLTAGE NOISE en p-p f = 0.1 Hz to 10 Hz 18 V p-p
f = 10 Hz to 10 kHz 42 V rms
OUTPUT VOLTAGE NOISE DENSITY en f = 1 kHz 1 µV/√Hz
OUTPUT VOLTAGE HYSTERESIS2 ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −60 dB
LONG-TERM OUTPUT VOLTAGE DRIFT ∆V
TURN-ON SETTLING TIME tR C
1
Refers to the minimum difference between VIN and V
2
See the section. The part is placed through the temperature cycle in the order of temperatures shown.
Terminology
2.4975 2.500 2.5025 V
OUT
±0.1 %
OERR
−40°C ≤ TA ≤ +125°C
OUT
/∆VIN VIN = 2.7 V to 5.5 V 5 50 ppm/V
OUT
= 2.7 V to 5.5 V, −40°C ≤ TA ≤ +125°C 120 ppm/V
IN
/∆IL
OUT
= 0 mA to 10 mA,
I
L
= 3.0 V, −40°C ≤ TA ≤ +125°C
V
IN
= 0 mA to −3 mA,
I
L
V
= 3.0 V, −40°C ≤ TA ≤ +125°C
IN
I
DO
OUT_HYS
OUT_LTD
such that V
OUT
= 0 mA, TA = −40°C ≤ TA ≤ +125°C 50 200 mV
L
= 2 mA, TA = −40°C ≤ TA ≤ +125°C 75 250 mV
L
TA = +25°C to −40°C to +125°C to +25°C 70 ppm
1000 hours at 50°C 30 ppm
= 0.1 F, CL = 0.1 F, RL = 1 kΩ 600 s
IN
maintains a minimum accuracy of 0.1%. See the Termin section. ology
OUT
10 30 ppm/mA
10 50 ppm/mA
× 0.85 VIN V
IN
Rev. 0 | Page 3 of 20
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550 Data Sheet
ADR3530 ELECTRICAL CHARACTERISTICS
VIN = 3.2 V to 5.5 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 3.
Parameter Symbol Conditions Min Typ Max Unit
OUTPUT VOLTAGE V
INITIAL OUTPUT VOLTAGE ERROR V
±3.0 mV
TEMPERATURE COEFFICIENT TCV
A Grade 2.5 8 ppm/°C
B Grade 2.5 5 ppm/°C
LINE REGULATION ∆V
V
LOAD REGULATION ∆V
Sourcing
Sinking
OUTPUT CURRENT CAPACITY IL
Sourcing VIN = 3.5 V to 5.5 V 10 mA
Sinking VIN = 3.5 V to 5.5 V −3 mA
QUIESCENT CURRENT IQ
Normal Operation ENABLE ≥ VIN × 0.85 85 A
ENABLE = VIN, −40°C ≤ TA ≤ +125°C 100 A
Shutdown ENABLE ≤ 0.7 V 5 A
DROPOUT VOLTAGE1 V
I
ENABLE PIN
Shutdown Voltage VL 0 0.7 V
ENABLE Voltage VH V
ENABLE Pin Leakage Current IEN ENABLE = VIN, TA = −40°C ≤ TA ≤ +125°C 0.85 3 A
OUTPUT VOLTAGE NOISE en p-p f = 0.1 Hz to 10 Hz 22 V p-p
f = 10 Hz to 10 kHz 45 V rms
OUTPUT VOLTAGE NOISE DENSITY en f = 1 kHz 1.1 µV/√Hz
OUTPUT VOLTAGE HYSTERESIS2 ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −60 dB
LONG-TERM OUTPUT VOLTAGE DRIFT ∆V
TURN-ON SETTLING TIME tR C
1
Refers to the minimum difference between VIN and V
2
Terminology
See the section. The part is placed through the temperature cycle in the order of temperatures shown.
2.9970 3.0000 3.0030 V
OUT
±0.1 %
OERR
−40°C ≤ TA ≤ +125°C
OUT
/∆VIN VIN = 3.2 V to 5.5 V 5 50 ppm/V
OUT
= 3.2 V to 5.5 V, −40°C ≤ TA ≤ +125°C 120 ppm/V
IN
/∆IL
OUT
= 0 mA to 10 mA,
I
L
= 3.5 V, −40°C ≤ TA ≤ +125°C
V
IN
= 0 mA to −3 mA,
I
L
V
= 3.5 V, −40°C ≤ TA ≤ +125°C
IN
I
DO
OUT_HYS
OUT_LTD
such that V
OUT
= 0 mA, TA = −40°C ≤ TA ≤ +125°C 50 200 mV
L
= 2 mA, TA = −40°C ≤ TA ≤ +125°C 75 250 mV
L
TA = +25°C to −40°C to +125°C to +25°C 70 ppm
1000 hours at 50°C 30 ppm
= 0.1 F, CL = 0.1 F, RL = 1 kΩ 700 s
IN
maintains a minimum accuracy of 0.1%. See the Termin section. ology
OUT
9 30 ppm/mA
10 50 ppm/mA
× 0.85 VIN V
IN
Rev. 0 | Page 4 of 20
Data Sheet ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
ADR3533 ELECTRICAL CHARACTERISTICS
VIN = 3.5 V to 5.5 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 4.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
OUTPUT VOLTAGE V
INITIAL OUTPUT VOLTAGE ERROR V
±3.3 mV
TEMPERATURE COEFFICIENT TCV
A Grade 2.5 8 ppm/°C
B Grade 2.5 5 ppm/°C
LINE REGULATION ∆V
V
LOAD REGULATION ∆V
Sourcing
Sinking
OUTPUT CURRENT CAPACITY IL
Sourcing VIN = 3.8 V to 5.5 V 10 mA
Sinking VIN = 3.8 V to 5.5 V −3 mA
QUIESCENT CURRENT IQ
Normal Operation ENABLE ≥ VIN × 0.85 85 A
ENABLE = VIN, −40°C ≤ TA ≤ +125°C 100 A
Shutdown ENABLE ≤ 0.7 V 5 A
DROPOUT VOLTAGE1 V
I
ENABLE PIN
Shutdown Voltage VL 0 0.7 V
ENABLE Voltage VH V
ENABLE Pin Leakage Current IEN ENABLE = VIN, TA = −40°C ≤ TA ≤ +125°C 0.85 3 A
OUTPUT VOLTAGE NOISE en p-p f = 0.1 Hz to 10 Hz 25 V p-p
f = 10 Hz to 10 kHz 46 V rms
OUTPUT VOLTAGE NOISE DENSITY en f = 1 kHz 1.2 µV/√Hz
OUTPUT VOLTAGE HYSTERESIS2 ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −60 dB
LONG-TERM OUTPUT VOLTAGE DRIFT ∆V
TURN-ON SETTLING TIME tR C
1
Refers to the minimum difference between VIN and V
2
Terminology
See the section. The part is placed through the temperature cycle in the order of temperatures shown.
3.2967 3.3000 3.3033 V
OUT
±0.1 %
OERR
−40°C ≤ TA ≤ +125°C
OUT
/∆VIN VIN = 3.5 V to 5.5 V 5 50 ppm/V
OUT
= 3.5 V to 5.5 V, −40°C ≤ TA ≤ +125°C 120 ppm/V
IN
/∆IL
OUT
= 0 mA to 10 mA,
I
L
= 3.8 V, −40°C ≤ TA ≤ +125°C
V
IN
= 0 mA to −3 mA,
I
L
V
= 3.8 V, −40°C ≤ TA ≤ +125°C
IN
I
DO
OUT_HYS
OUT_LTD
OUT
= 0 mA, TA = −40°C ≤ TA ≤ +125°C 50 200 mV
L
= 2 mA, TA = −40°C ≤ TA ≤ +125°C 75 250 mV
L
TA = +25°C to −40°C to +125°C to +25°C 70 ppm
1000 hours at 50°C 30 ppm
= 0.1 F, CL = 0.1 F, RL = 1 kΩ 750 s
IN
such that V
maintains a minimum accuracy of 0.1%. See the Termin section. ology
OUT
9 30 ppm/mA
10 50 ppm/mA
× 0.85 VIN V
IN
Rev. 0 | Page 5 of 20
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550 Data Sheet
ADR3540 ELECTRICAL CHARACTERISTICS
VIN = 4.3 V to 5.5 V, IL = 0 mA, TA = 25°C, unless otherwise noted.
Table 5.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
OUTPUT VOLTAGE V
INITIAL OUTPUT VOLTAGE ERROR V
±4.096 mV
TEMPERATURE COEFFICIENT TCV
A Grade 2.5 8 ppm/°C
B Grade 2.5 5 ppm/°C
LINE REGULATION ∆V
V
LOAD REGULATION ∆V
Sourcing
Sinking
OUTPUT CURRENT CAPACITY IL
Sourcing VIN = 4.6 V to 5.5 V 10 mA
Sinking VIN = 4.6 V to 5.5 V −3 mA
QUIESCENT CURRENT IQ
Normal Operation ENABLE ≥ VIN × 0.85 85 A
ENABLE = VIN, −40°C ≤ TA ≤ +125°C 100 A
Shutdown ENABLE ≤ 0.7 V 5 A
DROPOUT VOLTAGE1 V
I
ENABLE PIN
Shutdown Voltage VL 0 0.7 V
ENABLE Voltage VH V
ENABLE Pin Leakage Current IEN ENABLE = VIN, TA = −40°C ≤ TA ≤ +125°C 0.85 3 A
OUTPUT VOLTAGE NOISE en p-p f = 0.1 Hz to 10 Hz 29 V p-p
f = 10 Hz to 10 kHz 53 V rms
OUTPUT VOLTAGE NOISE DENSITY en f = 1 kHz 1.4 µV/√Hz
OUTPUT VOLTAGE HYSTERESIS2 ∆V
RIPPLE REJECTION RATIO RRR fIN = 60 Hz −60 dB
LONG-TERM OUTPUT VOLTAGE DRIFT ∆V
TURN-ON SETTLING TIME tR C
1
Refers to the minimum difference between VIN and V
2
Terminology
See the section. The part is placed through the temperature cycle in the order of temperatures shown.
4.0919 4.0960 4.1000 V
OUT
±0.1 %
OERR
−40°C ≤ TA ≤ +125°C
OUT
/∆VIN VIN = 4.3 V to 5.5 V 3 50 ppm/V
OUT
= 4.3 V to 5.5 V, −40°C ≤ TA ≤ +125°C 120 ppm/V
IN
/∆IL
OUT
= 0 mA to 10 mA,
I
L
= 4.6 V, −40°C ≤ TA ≤ +125°C
V
IN
= 0 mA to −3 mA,
I
L
V
= 4.6 V, −40°C ≤ TA ≤ +125°C
IN
I
DO
OUT_HYS
OUT_LTD
such that V
OUT
= 0 mA, TA = −40°C ≤ TA ≤ +125°C 50 200 mV
L
= 2 mA, TA = −40°C ≤ TA ≤ +125°C 75 250 mV
L
TA = +25°C to −40°C to +125°C to +25°C 70 ppm
1000 hours at 50°C 30 ppm
= 0.1 F, CL = 0.1 F, RL = 1 kΩ 800 s
IN
maintains a minimum accuracy of 0.1%. See the Termin section. ology
OUT
6 30 ppm/mA
15 50 ppm/mA
× 0.85 VIN V
IN
Rev. 0 | Page 6 of 20
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