Data Sheet
FEATURES
Micropower, High Accuracy
Voltage References
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
PIN CONFIGURATION
ADR3525/
ADR3530/
ADR3533/
ADR3540/
ADR3550
ENABLE
1
GND SENSE
2
GND FORCE
3
NIC
4
TOP VIEW
(Not to Scale)
8
7
6
5
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
V
IN
V
OUT
SENSE
V
OUT
FORCE
NIC
09594-001
NOTES
1. NIC = NOT INTERNALLY CONNECTED.
THIS PIN IS NOT CONNECTED INTERNALLY.
Figure 1. 8-Lead MSOP (RM-8 Suffix)
APPLICATIONS
Automotive battery monitors
Portable instrumentation
Process transmitters
Remote sensors
Medical instrumentation
GENERAL DESCRIPTION
The
ADR3525W, ADR3530W, ADR3533W, ADR3540W,
and
ADR3550W
are low cost, low power, high precision CMOS
voltage references, featuring a maximum temperature coeffi-
cient (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., proprietary 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
ADR3525W
ADR3530W
ADR3533W
ADR3540W
ADR3550W
Output Voltage (V)
2.500
3.000
3.300
4.096
5.000
Input Voltage Range (V)
2.7 to 5.5
3.2 to 5.5
3.5 to 5.5
4.3 to 5.5
5.2 to 5.5
Rev. B
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ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
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
Data Sheet
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
V
IN
Slew Rate Considerations ................................................... 18
Shutdown/Enable Feature ......................................................... 18
Sample Applications ................................................................... 19
Outline Dimensions ....................................................................... 20
Ordering Guide .......................................................................... 20
Automotive Products ................................................................. 20
REVISION HISTORY
9/2018—Rev. A to Rev. B
Changes to Figure 1 .......................................................................... 1
Changes to Figure 2 and Table 9 ..................................................... 9
6/2018—Rev. 0 to Rev. A
Changed Patented to Proprietary ................................ Throughout
Changes to Figure 14 ...................................................................... 11
Changes to Figure 20 ...................................................................... 12
Changes to Figure 32 ...................................................................... 14
Change to Figure 33 Caption ........................................................ 15
Changes to Ordering Guide .......................................................... 20
9/2011—Revision 0: Initial Version
Rev. B | Page 2 of 20
Data Sheet
SPECIFICATIONS
ADR3525 ELECTRICAL CHARACTERISTICS
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
V
IN
= 2.7 V to 5.5 V, I
L
= 0 mA, T
A
= 25°C, unless otherwise noted.
Table 2.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
TEMPERATURE COEFFICIENT
A Grade
B Grade
LINE REGULATION
LOAD REGULATION
Sourcing
Sinking
OUTPUT CURRENT CAPACITY
Sourcing
Sinking
QUIESCENT CURRENT
Normal Operation
Shutdown
DROPOUT VOLTAGE
1
ENABLE PIN
Shutdown Voltage
ENABLE Voltage
ENABLE Pin Leakage Current
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
2
RIPPLE REJECTION RATIO
LONG-TERM OUTPUT VOLTAGE DRIFT
TURN-ON SETTLING TIME
1
2
Symbol
V
OUT
V
OERR
TCV
OUT
Conditions
Min
2.4975
Typ
2.500
Max
2.5025
±0.1
±2.5
8
5
50
120
30
50
Unit
V
%
mV
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
−40°C ≤ T
A
≤ +125°C
2.5
2.5
5
ΔV
OUT
/ΔV
IN
ΔV
OUT
/ΔI
L
V
IN
= 2.7 V to 5.5 V
V
IN
= 2.7 V to 5.5 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to 10 mA,
V
IN
= 3.0 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to −3 mA,
V
IN
= 3.0 V, −40°C ≤ T
A
≤ +125°C
10
10
I
L
V
IN
= 3.0 V to 5.5 V
V
IN
= 3.0 V to 5.5 V
I
Q
ENABLE ≥ V
IN
× 0.85
ENABLE = V
IN
, −40°C ≤ T
A
≤ +125°C
ENABLE ≤ 0.7 V
I
L
= 0 mA, T
A
= −40°C ≤ T
A
≤ +125°C
I
L
= 2 mA, T
A
= −40°C ≤ T
A
≤ +125°C
0
V
IN
× 0.85
ENABLE = V
IN
, T
A
= −40°C ≤ T
A
≤ +125°C
f = 0.1 Hz to 10 Hz
f = 10 Hz to 10 kHz
f = 1 kHz
T
A
= +25°C to −40°C to +125°C to +25°C
f
IN
= 60 Hz
1000 hours at 50°C
C
IN
= 0.1 μF, C
L
= 0.1 μF, R
L
= 1 kΩ
1
18
42
1
70
−60
30
600
85
100
5
200
250
0.7
V
IN
3
μA
μA
μA
mV
mV
V
V
μA
μV p-p
μV rms
µV/√Hz
ppm
dB
ppm
μs
10
−3
mA
mA
V
DO
50
75
V
L
V
H
I
EN
e
n
p-p
e
n
ΔV
OUT_HYS
RRR
ΔV
OUT_LTD
t
R
Refers to the minimum difference between V
IN
and V
OUT
such that V
OUT
maintains a minimum accuracy of 0.1%. See the Terminology section.
See the Terminology section. The part is placed through the temperature cycle in the order of temperatures shown.
Rev. B | Page 3 of 20
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
ADR3530 ELECTRICAL CHARACTERISTICS
V
IN
= 3.2 V to 5.5 V, I
L
= 0 mA, T
A
= 25°C, unless otherwise noted.
Table 3.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
TEMPERATURE COEFFICIENT
A Grade
B Grade
LINE REGULATION
LOAD REGULATION
Sourcing
Sinking
OUTPUT CURRENT CAPACITY
Sourcing
Sinking
QUIESCENT CURRENT
Normal Operation
Shutdown
DROPOUT VOLTAGE
1
ENABLE PIN
Shutdown Voltage
ENABLE Voltage
ENABLE Pin Leakage Current
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
2
RIPPLE REJECTION RATIO
LONG-TERM OUTPUT VOLTAGE DRIFT
TURN-ON SETTLING TIME
1
2
Data Sheet
Symbol
V
OUT
V
OERR
TCV
OUT
Conditions
Min
2.9970
Typ
3.0000
Max
3.0030
±0.1
±3.0
8
5
50
120
30
50
Unit
V
%
mV
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
−40°C ≤ T
A
≤ +125°C
2.5
2.5
5
ΔV
OUT
/ΔV
IN
ΔV
OUT
/ΔI
L
V
IN
= 3.2 V to 5.5 V
V
IN
= 3.2 V to 5.5 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to 10 mA,
V
IN
= 3.5 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to −3 mA,
V
IN
= 3.5 V, −40°C ≤ T
A
≤ +125°C
9
10
I
L
V
IN
= 3.5 V to 5.5 V
V
IN
= 3.5 V to 5.5 V
I
Q
ENABLE ≥ V
IN
× 0.85
ENABLE = V
IN
, −40°C ≤ T
A
≤ +125°C
ENABLE ≤ 0.7 V
I
L
= 0 mA, T
A
= −40°C ≤ T
A
≤ +125°C
I
L
= 2 mA, T
A
= −40°C ≤ T
A
≤ +125°C
0
V
IN
× 0.85
ENABLE = V
IN
, T
A
= −40°C ≤ T
A
≤ +125°C
f = 0.1 Hz to 10 Hz
f = 10 Hz to 10 kHz
f = 1 kHz
T
A
= +25°C to −40°C to +125°C to +25°C
f
IN
= 60 Hz
1000 hours at 50°C
C
IN
= 0.1 μF, C
L
= 0.1 μF, R
L
= 1 kΩ
0.85
22
45
1.1
70
−60
30
700
85
100
5
200
250
0.7
V
IN
3
μA
μA
μA
mV
mV
V
V
μA
μV p-p
μV rms
µV/√Hz
ppm
dB
ppm
μs
10
−3
mA
mA
V
DO
50
75
V
L
V
H
I
EN
e
n
p-p
e
n
ΔV
OUT_HYS
RRR
ΔV
OUT_LTD
t
R
Refers to the minimum difference between V
IN
and V
OUT
such that V
OUT
maintains a minimum accuracy of 0.1%. See the Terminology section.
See the Terminology section. The part is placed through the temperature cycle in the order of temperatures shown.
Rev. B | Page 4 of 20
Data Sheet
ADR3533 ELECTRICAL CHARACTERISTICS
ADR3525/ADR3530/ADR3533/ADR3540/ADR3550
V
IN
= 3.5 V to 5.5 V, I
L
= 0 mA, T
A
= 25°C, unless otherwise noted.
Table 4.
Parameter
OUTPUT VOLTAGE
INITIAL OUTPUT VOLTAGE ERROR
TEMPERATURE COEFFICIENT
A Grade
B Grade
LINE REGULATION
LOAD REGULATION
Sourcing
Sinking
OUTPUT CURRENT CAPACITY
Sourcing
Sinking
QUIESCENT CURRENT
Normal Operation
Shutdown
DROPOUT VOLTAGE
1
ENABLE PIN
Shutdown Voltage
ENABLE Voltage
ENABLE Pin Leakage Current
OUTPUT VOLTAGE NOISE
OUTPUT VOLTAGE NOISE DENSITY
OUTPUT VOLTAGE HYSTERESIS
2
RIPPLE REJECTION RATIO
LONG-TERM OUTPUT VOLTAGE DRIFT
TURN-ON SETTLING TIME
1
2
Symbol
V
OUT
V
OERR
TCV
OUT
Test Conditions/Comments
Min
3.2967
Typ
3.3000
Max
3.3033
±0.1
±3.3
8
5
50
120
30
50
Unit
V
%
mV
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
−40°C ≤ T
A
≤ +125°C
2.5
2.5
5
ΔV
OUT
/ΔV
IN
ΔV
OUT
/ΔI
L
V
IN
= 3.5 V to 5.5 V
V
IN
= 3.5 V to 5.5 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to 10 mA,
V
IN
= 3.8 V, −40°C ≤ T
A
≤ +125°C
I
L
= 0 mA to −3 mA,
V
IN
= 3.8 V, −40°C ≤ T
A
≤ +125°C
9
10
I
L
V
IN
= 3.8 V to 5.5 V
V
IN
= 3.8 V to 5.5 V
I
Q
ENABLE ≥ V
IN
× 0.85
ENABLE = V
IN
, −40°C ≤ T
A
≤ +125°C
ENABLE ≤ 0.7 V
I
L
= 0 mA, T
A
= −40°C ≤ T
A
≤ +125°C
I
L
= 2 mA, T
A
= −40°C ≤ T
A
≤ +125°C
0
V
IN
× 0.85
ENABLE = V
IN
, T
A
= −40°C ≤ T
A
≤ +125°C
f = 0.1 Hz to 10 Hz
f = 10 Hz to 10 kHz
f = 1 kHz
T
A
= +25°C to −40°C to +125°C to +25°C
f
IN
= 60 Hz
1000 hours at 50°C
C
IN
= 0.1 μF, C
L
= 0.1 μF, R
L
= 1 kΩ
0.85
25
46
1.2
70
−60
30
750
85
100
5
200
250
0.7
V
IN
3
μA
μA
μA
mV
mV
V
V
μA
μV p-p
μV rms
µV/√Hz
ppm
dB
ppm
μs
10
−3
mA
mA
V
DO
50
75
V
L
V
H
I
EN
e
n
p-p
e
n
ΔV
OUT_HYS
RRR
ΔV
OUT_LTD
t
R
Refers to the minimum difference between V
IN
and V
OUT
such that V
OUT
maintains a minimum accuracy of 0.1%. See the Terminology section.
See the Terminology section. The part is placed through the temperature cycle in the order of temperatures shown.
Rev. B | Page 5 of 20
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