AD ADR5040ARTZ-R2

Precision Micropower Shunt Mode
Voltage References
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
FEATURES
PIN CONFIGURATION
ADR5040/ADR5041/
ADR5043/ADR5044/
ADR5045
Ultracompact SC70 and SOT-23 packages
Low temperature coefficient: 75 ppm/°C (maximum)
Pin compatible with LM4040/LM4050
Initial accuracy: ±0.1%
No external capacitor required
Wide operating current range: 50 μA to 15 mA
Extended temperature range: −40°C to +125°C
V+ 1
3
NC
NOTES
1. NC = NO CONNECT.
2. PIN 3 MUST BE LEFT FLOATING OR
CONNECTED TO GROUND.
APPLICATIONS
Portable, battery-powered equipment
Automotives
Power supplies
Data acquisition systems
Instrumentation and process control
Energy management
06526-001
V– 2
Figure 1. 3-Lead SC70 (KS) and 3-Lead SOT-23 (RT)
GENERAL DESCRIPTION
Designed for space-critical applications, the ADR5040/
ADR5041/ADR5043/ADR5044/ADR5045 are high precision
shunt voltage references, housed in ultrasmall SC70 and SOT-23
packages. These voltage references are multipurpose, easy-to-use
references that can be used in a vast array of applications. They
feature low temperature drift, an initial accuracy of better than
0.1%, and fast settling time.
Available in output voltages of 2.048 V, 2.5 V, 3.0 V, 4.096 V, and
5.0 V, the advanced design of the ADR5040/ADR5041/ADR5043/
ADR5044/ADR5045 eliminates the need for compensation by an
external capacitor, yet the references are stable with any capacitive
load. The minimum operating current increases from 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. This family of references has been characterized
over the extended temperature range of −40°C to +125°C.
Table 1. Selection Table
Part
ADR5040A
ADR5040B
ADR5041A
ADR5041B
ADR5043A
ADR5043B
ADR5044A
ADR5044B
ADR5045A
ADR5045B
Voltage (V)
2.048
2.048
2.5
2.5
3.0
3.0
4.096
4.096
5.0
5.0
Initial
Accuracy (%)
±0.2
±0.1
±0.2
±0.1
±0.2
±0.1
±0.2
±0.1
±0.2
±0.1
Temperature
Coefficient
(ppm/°C)
100
75
100
75
100
75
100
75
100
75
Rev. A
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
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www.analog.com
Fax: 781.461.3113
©2007 Analog Devices, Inc. All rights reserved.
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
TABLE OF CONTENTS
Features .............................................................................................. 1
ADR5045 Electrical Characteristics ...........................................6
Applications....................................................................................... 1
Absolute Maximum Ratings ............................................................7
Pin Configuration............................................................................. 1
Thermal Resistance .......................................................................7
General Description ......................................................................... 1
ESD Caution...................................................................................7
Revision History ............................................................................... 2
Typical Performance Characteristics ..............................................8
Specifications..................................................................................... 4
Terminology .................................................................................... 11
ADR5040 Electrical Characteristics .......................................... 4
Theory of Operation ...................................................................... 12
ADR5041 Electrical Characteristics .......................................... 4
Applications Information.......................................................... 12
ADR5043 Electrical Characteristics .......................................... 5
Outline Dimensions ....................................................................... 14
ADR5044 Electrical Characteristics .......................................... 5
Ordering Guide .......................................................................... 14
REVISION HISTORY
12/07—Rev. 0 to Rev. A
Changes to Features.......................................................................... 1
Changes to Initial Accuracy and Temperature Coefficient
Parameters in Table 2 Through Table 6 ......................................... 3
Updated Outline Dimensions ....................................................... 13
Changes to Ordering Guide .......................................................... 13
1/07—Revision 0: Initial Version
Rev. A | Page 2 of 17
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
SPECIFICATIONS
ADR5040 ELECTRICAL CHARACTERISTICS
IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
OUTPUT VOLTAGE
Grade A
Grade B
INITIAL ACCURACY
Grade A
Symbol
VOUT
VOERR
Conditions
IIN = 100 μA
Max
Unit
2.044
2.046
2.048
2.048
2.052
2.050
V
V
+4.096
±0.2
+2.048
±0.1
mV
%
mV
%
10
10
100
75
ppm/°C
ppm/°C
0.4
1.75
mV
4
8
0.2
50
60
mV
Ω
μA
μA
μV rms
μV rms
μs
ppm
–4.096
–2.048
TCVOUT
∆VR
DYNAMIC OUTPUT IMPEDANCE
MINIMUM OPERATING CURRENT
(∆VR/∆IR)
IIN
VOLTAGE NOISE
eN
TURN-ON SETTLING TIME
OUTPUT VOLTAGE HYSTERESIS
tR
∆VOUT_HYS
1
Typ
IIN = 100 μA
Grade B
TEMPERATURE COEFFICIENT 1
Grade A
Grade B
OUTPUT VOLTAGE CHANGE vs. IIN
Min
–40°C < TA < +125°C
IIN = 50 μA to 1 mA
–40°C < TA < +125°C
IIN = 1 mA to 15 mA
–40°C < TA < +125°C
IIN = 50 μA to 15 mA
TA = 25°C
–40°C < TA < +125°C
IIN = 100 μA; 0.1 Hz to 10 Hz
IIN = 100 μA; 10 Hz to 10 kHz
CLOAD = 0 μF
IIN = 1 mA
2.8
120
28
40
Guaranteed by design.
ADR5041 ELECTRICAL CHARACTERISTICS
IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
OUTPUT VOLTAGE
Grade A
Grade B
INITIAL ACCURACY
Grade A
Symbol
VOUT
VOERR
Conditions
IIN = 100 μA
Typ
Max
Unit
2.495
2.4975
2.500
2.500
2.505
2.5025
V
V
+5
±0.2
+2.5
±0.1
mV
%
mV
%
10
10
100
75
ppm/°C
ppm/°C
0.5
1.8
mV
4
8
mV
IIN = 100 μA
–5
Grade B
TEMPERATURE COEFFICIENT 1
Grade A
Grade B
OUTPUT VOLTAGE CHANGE vs. IIN
Min
–2.5
TCVOUT
∆VR
–40°C < TA < +125°C
IIN = 50 μA to 1 mA
–40°C < TA < +125°C
IIN = 1 mA to 15 mA
–40°C < TA < +125°C
Rev. A | Page 3 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
Parameter
DYNAMIC OUTPUT IMPEDANCE
MINIMUM OPERATING CURRENT
Symbol
(∆VR/∆IR)
IIN
VOLTAGE NOISE
eN
TURN-ON SETTLING TIME
OUTPUT VOLTAGE HYSTERESIS
tR
∆VOUT_HYS
1
Conditions
IIN = 50 μA to 15 mA
TA = 25°C
–40°C < TA < +125°C
IIN = 100 μA; 0.1 Hz to 10 Hz
IIN = 100 μA; 10 Hz to 10 kHz
CLOAD = 0 μF
IIN = 1 mA
Min
Conditions
IIN = 100 μA
Min
2.994
2.997
Typ
Max
0.2
50
60
Unit
Ω
μA
μA
μV rms
μV rms
μs
ppm
Typ
Max
Unit
3.000
3.000
3.006
3.003
V
V
+6
±0.2
+3
±0.1
mV
%
mV
%
10
10
100
75
ppm/°C
ppm/°C
0.7
2.2
mV
4
8
0.2
50
60
mV
Ω
μA
μA
μV rms
μV rms
μs
ppm
3.2
150
35
40
Guaranteed by design.
ADR5043 ELECTRICAL CHARACTERISTICS
IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.
Table 4.
Parameter
OUTPUT VOLTAGE
Grade A
Grade B
INITIAL ACCURACY
Grade A
Symbol
VOUT
VOERR
IIN = 100 μA
–6
Grade B
TEMPERATURE COEFFICIENT 1
Grade A
Grade B
OUTPUT VOLTAGE CHANGE vs. IIN
–3
TCVOUT
∆VR
DYNAMIC OUTPUT IMPEDANCE
MINIMUM OPERATING CURRENT
(∆VR/∆IR)
IIN
VOLTAGE NOISE
eN
TURN-ON SETTLING TIME
OUTPUT VOLTAGE HYSTERESIS
tR
∆VOUT_HYS
1
–40°C < TA < +125°C
IIN = 50 μA to 1 mA
–40°C < TA < +125°C
IIN = 1 mA to 15 mA
–40°C < TA < +125°C
IIN = 50 μA to 15 mA
TA = 25°C
–40°C < TA < +125°C
IIN = 100 μA; 0.1 Hz to 10 Hz
IIN = 100 μA; 10 Hz to 10 kHz
CLOAD = 0 μF
IIN = 1 mA
4.3
180
42
40
Guaranteed by design.
ADR5044 ELECTRICAL CHARACTERISTICS
IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.
Table 5.
Parameter
OUTPUT VOLTAGE
Grade A
Grade B
INITIAL ACCURACY
Grade A
Symbol
VOUT
VOERR
Conditions
IIN = 100 μA
Min
Typ
Max
Unit
4.088
4.092
4.096
4.096
4.104
4.100
V
V
+8.192
±0.2
+4.096
±0.1
mV
%
mV
%
IIN = 100 μA
–8.192
Grade B
–4.096
Rev. A | Page 4 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
Parameter
TEMPERATURE COEFFICIENT 1
Grade A
Grade B
OUTPUT VOLTAGE CHANGE vs. IIN
Symbol
TCVOUT
∆VR
DYNAMIC OUTPUT IMPEDANCE
MINIMUM OPERATING CURRENT
(∆VR/∆IR)
IIN
VOLTAGE NOISE
eN
TURN-ON SETTLING TIME
OUTPUT VOLTAGE HYSTERESIS
tR
∆VOUT_HYS
1
Conditions
–40°C < TA < +125°C
Min
IIN = 50 μA to 1 mA
–40°C < TA < +125°C
IIN = 1 mA to 15 mA
–40°C < TA < +125°C
IIN = 50 μA to 15 mA
TA = 25°C
–40°C < TA < +125°C
IIN = 100 μA; 0.1 Hz to 10 Hz
IIN = 100 μA; 10 Hz to 10 kHz
CLOAD = 0 μF
IIN = 1 mA
Typ
Max
Unit
10
10
100
75
ppm/°C
ppm/°C
0.7
3
mV
4
8
0.2
50
60
mV
Ω
μA
μA
μV rms
μV rms
μs
ppm
5.4
240
56
40
Guaranteed by design.
ADR5045 ELECTRICAL CHARACTERISTICS
IIN = 50 μA to 15 mA, TA = 25°C, unless otherwise noted.
Table 6.
Parameter
OUTPUT VOLTAGE
Grade A
Grade B
INITIAL ACCURACY
Grade A
Symbol
VOUT
VOERR
Conditions
IIN = 100 μA
Max
Unit
4.990
4.995
5.000
5.000
5.010
5.005
V
V
+10
±0.2
+5
±0.1
mV
%
mV
%
10
10
100
75
ppm/°C
ppm/°C
0.8
4
mV
4
8
0.2
50
60
mV
Ω
μA
μA
μV rms
μV rms
μs
ppm
–10
–5
TCVOUT
∆VR
DYNAMIC OUTPUT IMPEDANCE
MINIMUM OPERATING CURRENT
(∆VR/∆IR)
IIN
VOLTAGE NOISE
eN
TURN-ON SETTLING TIME
OUTPUT VOLTAGE HYSTERESIS
tR
∆VOUT_HYS
1
Typ
IIN = 100 μA
Grade B
TEMPERATURE COEFFICIENT 1
Grade A
Grade B
OUTPUT VOLTAGE CHANGE vs. IIN
Min
–40°C < TA < +125°C
IIN = 50 μA to 1 mA
–40°C < TA < +125°C
IIN = 1 mA to 15 mA
–40°C < TA < +125°C
IIN = 50 μA to 15 mA
TA = 25°C
–40°C < TA < +125°C
IIN = 100 μA; 0.1 Hz to 10 Hz
IIN = 100 μA; 10 Hz to 10 kHz
CLOAD = 0 μF
IIN = 1 mA
Guaranteed by design.
Rev. A | Page 5 of 16
6.6
280
70
40
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
ABSOLUTE MAXIMUM RATINGS
Ratings apply at 25°C, unless otherwise noted.
THERMAL RESISTANCE
Table 7.
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
Parameter
Reverse Current
Forward Current
Storage Temperature Range
Extended Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
Rating
25 mA
20 mA
–65°C to +150°C
–40°C to +125°C
–65°C to +150°C
300°C
Table 8. Thermal Resistance
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.
Package Type
θJA
θJC
Unit
3-Lead SC70 (KS)
3-Lead SOT-23 (RT)
580.5
270
177.4
°C/W
°C/W
ESD CAUTION
Rev. A | Page 6 of 16
102
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, IIN = 100 μA, unless otherwise noted.
6
15
IR = 150µA
IR = 150µA
4
10
VOUT CHANGE (mV)
0
–2
–4
5
0
–5
–10
–6
–25
–10
5
20
35
50
65
TEMPERATURE (°C)
80
95
110
125
–15
–40
06526-003
–8
–40
Figure 2. ADR5041 VOUT Change vs. Temperature
–25
–10
5
20
35
50
65
TEMPERATURE (°C)
80
95
110
125
06526-005
VOUT CHANGE (mV)
2
Figure 5. ADR5045 VOUT Change vs. Temperature
8
5
+125°C
2
+25°C
1
–40°C
0
5
10
ISHUNT (mA)
15
20
–40°C
2
0
+25°C
–2
–6
–8
Figure 3. ADR5041 Reverse Voltage Change vs. ISHUNT
0
5
10
ISHUNT (mA)
15
20
Figure 6. ADR5045 Reverse Voltage Change vs. ISHUNT
2V/DIV
VIN
VIN
VOUT
VOUT
10µs/DIV
06526-007
1V/DIV
+125°C
–4
10µs/DIV
Figure 4. ADR5041 Start-Up Characteristics
Figure 7. ADR5045 Start-Up Characteristics
Rev. A | Page 7 of 16
06526-010
0
4
06526-006
REVERSE VOLTAGE CHANGE (mV)
3
06526-004
REVERSE VOLTAGE CHANGE (mV)
6
4
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
VGEN (2V/DIV)
10µs/DIV
–25µA
ISHUNT = 100mA ± 25µA
RL = 100kΩ
40µs/DIV
Figure 8. ADR5041 Load Transient Response
Figure 11. ADR5045 Load Transient Response
+250µA
VGEN
VGEN
+250µA
10µs/DIV
10µs/DIV
Figure 9. ADR5041 Transient Response
Figure 12. ADR5045 Transient Response
Figure 10. ADR5041 Transient Response
–2.5mA
ISHUNT = 10mA ± 2.5mA
RL = 1kΩ
10µs/DIV
Figure 13. ADR5045 Transient Response
Rev. A | Page 8 of 16
06526-016
10µs/DIV
06526-013
20mV/DIV
VR AC-COUPLED
–2.5mA
+2.5mA
20mV/DIV
VGEN
VGEN (2V/DIV)
+2.5mA
ISHUNT = 10mA ± 2.5mA
RL = 1kΩ
ISHUNT = 1mA ± 250µA
RL = 10kΩ
06526-012
06526-009
ISHUNT = 1mA ± 250µA
RL = 10kΩ
10mV/DIV
VR AC-COUPLED
–250µA
10mV/DIV
VR AC-COUPLED
–250µA
VR AC-COUPLED
06526-011
06526-008
ISHUNT = 100µA ± 25µA
RL = 100kΩ
+25µA
10mV/DIV
VR AC-COUPLED
–25µA
2mV/DIV
VR AC-COUPLED
VGEN (2V/DIV)
+25µA
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
10k
10k
C = 0µF
IIN = 150µA
10
100
10
C = 1µF
C = 1µF
1
IIN = 150µA
1
IIN = 1mA
IIN = 1mA
1k
10k
FREQUENCY (Hz)
100k
1M
0.1
100
06526-014
0.1
100
Figure 14. ADR5041 Output Impedance vs. Frequency
10k
FREQUENCY (Hz)
100k
1M
Figure 17. ADR5045 Output Impedance vs. Frequency
10k
10k
10
100
FREQUENCY (Hz)
1k
10k
1k
06526-015
1
100
90
2.048V
70
2.5V
3V
4.096V
5V
60
50
40
30
20
0
1
2
3
4
REVERSE VOLTAGE (V)
5
6
06526-002
10
0
10
100
FREQUENCY (Hz)
1k
Figure 18. ADR5045 Voltage Noise Density
Figure 15. ADR5041 Voltage Noise Density
80
1
Figure 16. ADR504x Reverse Characteristics and Minimum Operating Current
Rev. A | Page 9 of 16
10k
06526-018
NOISE (nV/ Hz)
NOISE (nV/ Hz)
1k
REVERSE CURRENT (µA)
1k
06526-017
100
C = 0µF
1k
IMPEDANCE (Ω)
IMPEDANCE (Ω)
1k
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
TERMINOLOGY
Temperature Coefficient
The change in output voltage with respect to operating temperature
changes. It is normalized by an output voltage of 25°C. This
parameter is expressed in ppm/°C and is determined by the
following equation:
V (T ) − VOUT (T1 )
ppm ⎤
= OUT 2
TCVOUT ⎡⎢
× 10 6
⎥
(
)
(
)
°
C
25
°
C
×
−
V
T
T
⎣
⎦
2
1
O UT
where:
VOUT(25°C) = VOUT at 25°C.
VOUT(T1) = VOUT at Temperature 1.
VOUT(T2) = VOUT at Temperature 2.
(1)
Thermal Hysteresis
The change in output voltage after the device is cycled through
temperatures ranging from +25°C to −40°C, then to +125°C, and
back to +25°C. This is common in precision reference and is
caused by thermal-mechanical package stress. Changes in environmental storage temperature, board mounting temperature, and
the operating temperature are some of the factors that can
contribute to thermal hysteresis. The following equation
expresses a typical value from a sample of parts put through
such a cycle:
VOUT _ HYS = VOUT (25° C ) − VOUT _ TC
VOUT _ HYS [ppm ] =
VOUT (25° C ) − VOUT _ TC
VOUT (25° C )
× 10 6
(2)
where:
VOUT(25°C) = VOUT at 25°C.
VOUT_TC = VOUT at 25°C after a temperature cycle from +25°C to
−40°C, then to +125°C, and back to +25°C.
Rev. A | Page 10 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
THEORY OF OPERATION
APPLICATIONS INFORMATION
VS
RBIAS
VOUT
•
RBIAS must be small enough to supply the minimum IIN current
to the ADR5040/ADR5041/ADR5043/ADR5044/ADR5045,
even when the supply voltage is at its minimum value and
the load current is at its maximum value.
RBIAS must be large enough so that IIN does not exceed 15 mA
when the supply voltage is at its maximum value and the
load current is at its minimum value.
Given these conditions, RBIAS is determined by the supply
voltage (VS), the ADR5040/ADR5041/ADR5043/ADR5044/
ADR5045 load and operating current (IL and IIN), and the
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 output
voltage (VOUT).
R BIAS =
VS − VOUT
I L + I IN
06526-019
ADR5040/ADR5041/
ADR5043/ADR5044/
ADR5045
Figure 19. Shunt Reference
Precision Negative Voltage Reference
The ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 are
suitable for applications where a precise negative voltage is desired.
Figure 20 shows the ADR5045 configured to provide a negative
output. Caution should be exercised in using a low temperature
sensitive resistor to avoid errors from the resistor.
ADR5045
VOUT
–5V
RBIAS
VCC
Figure 20. Negative Precision Reference Configuration
Stacking the ADR504x for User-Definable Outputs
Multiple ADR504x parts can be stacked together to allow the
user to obtain a desired higher voltage. Figure 21a shows three
ADR5045 devices configured to give 15 V. The bias resistor,
RBIAS, is chosen using Equation 3, noting that the same bias current
flows through all the shunt references in series. Figure 21b shows
three ADR5045 devices stacked together to give −15 V. RBIAS is
calculated in the same manner as before. Parts of different voltages
can also be added together; that is, an ADR5041 and an ADR5045
can be added together to give an output of +7.5 V or −7.5 V, as
desired. Note, however, that the initial accuracy error is the sum
of the errors of all the stacked parts, as are the temperature
coefficient and output voltage change vs. input current.
VDD
RBIAS
(3)
+15V
ADR5045
ADR5045
ADR5045
ADR5045
ADR5045
ADR5045
–15V
RBIAS
–VDD
(a)
(b)
06526-021
•
IL
IIN
The ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 are
a series of precision shunt voltage references. They are designed
to operate without an external capacitor between the positive
and negative terminals. If a bypass capacitor is used to filter the
supply, the references remain stable.
For a stable voltage, all shunt voltage references require an
external bias resistor (RBIAS) between the supply voltage and the
reference (see Figure 19). The RBIAS sets the current that flows
through the load (IL) and the reference (IIN). Because the load
and the supply voltage can vary, the RBIAS needs to be chosen
based on the following considerations:
IIN + IL
06526-020
The ADR504x family uses the band gap concept to produce
a stable, low temperature coefficient voltage reference suitable
for high accuracy data acquisition components and systems. The
devices use the physical nature of a silicon transistor base-emitter
voltage in the forward-biased operating region. All such transistors
have approximately a −2 mV/°C temperature coefficient (TC),
making them unsuitable for direct use as a low temperature
coefficient reference. Extrapolation of the temperature characteristic of any one of these devices to absolute zero (with the
collector current proportional to the absolute temperature),
however, reveals that its VBE approaches approximately the
silicon band gap voltage. Therefore, if a voltage develops with
an opposing temperature coefficient to sum the VBE, a zero
temperature coefficient reference results.
Figure 21. ±15 V Output with Stacked ADR5045 Devices
Rev. A | Page 11 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
Adjustable Precision Voltage Source
Programmable Current Source
The ADR5040/ADR5041/ADR5043/ADR5044/ADR5045,
combined with a precision low input bias op amp such as the
AD8610, can be used to output a precise adjustable voltage.
Figure 22 illustrates the implementation of this application
using the ADR5040/ADR5041/ADR5043/ADR5044/ADR5045.
The output of the op amp, VOUT, is determined by the gain of the
circuit, which is completely dependent on the resistors, R1 and R2.
By using just a few ultrasmall and inexpensive parts, it is possible
to build a programmable current source, as shown in Figure 23.
The constant voltage on the gate of the transistor sets the current
through the load. Varying the voltage on the gate changes the
current. The AD5247 is a digital potentiometer with I2C® digital
interface, and the AD8601 is a precision rail-to-rail input op
amp. Each incremental step of the digital potentiometer increases
or decreases the voltage at the noninverting input of the op amp.
Therefore, this voltage varies with respect to the reference
voltage.
VOUT = (1 + R2/R1)VREF
An additional capacitor, C1, in parallel with R2, can be added to
filter out high frequency noise. The value of C1 is dependent on
the value of R2.
VDD
RBIAS
VCC
RSENSE
RBIAS
VREF
AD8610
R2
R1
C1
(OPTIONAL)
AD5247
V+
AD8601
V–
ILOAD
06526-023
GND
ADR5040/
ADR5041/
ADR5043/
ADR5044/
ADR5045
VOUT = VREF (1 + R2/R1)
06526-022
ADR5040/ADR5041/
ADR5043/ADR5044/
ADR5045
Figure 22. Adjustable Voltage Source
Figure 23. Programmable Current Source
Rev. A | Page 12 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
OUTLINE DIMENSIONS
2.20
2.00
1.80
2.40
2.10
1.80
3
1
2
PIN 1
0.65 BSC
1.00
0.80
0.40
0.10
1.10
0.80
0.40
0.25
0.10 MAX
SEATING
PLANE
0.10 COPLANARITY
0.30
0.20
0.10
0.26
0.10
111505-0
1.35
1.25
1.15
ALL DIMENSIONS COMPLIANT WITH EIAJ SC70
Figure 24. 3-Lead Thin Shrink Small Outline Transistor Package [SC70]
(KS-3)
Dimensions shown in millimeters
3.04
2.80
1.40
1.20
2.64
2.10
3
1
2
0.60
0.45
2.05
1.78
1.03
0.89
1.12
0.89
0.100
0.013
0.180
0.085
0.51
0.37
0.55
REF
COMPLIANT TO JEDEC STANDARDS TO-236-AB
092707-A
SEATING
PLANE
Figure 25. 3-Lead Small Outline Transistor Package [SOT-23-3]
(RT-3)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADR5040AKSZ-R2 1
ADR5040AKSZ-REEL1
ADR5040AKSZ-REEL71
ADR5040ARTZ-R21
ADR5040ARTZ-REEL1
ADR5040ARTZ-REEL71
ADR5040BKSZ-R21
ADR5040BKSZ-REEL71
ADR5040BRTZ-R21
ADR5040BRTZ-REEL71
Output
Voltage
(V)
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
2.048
Initial
Accuracy
(mV)
4.096
4.096
4.096
4.096
4.096
4.096
2.048
2.048
2.048
2.048
Tempco
Industrial
(ppm/°C)
100
100
100
100
100
100
75
75
75
75
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
Rev. A | Page 13 of 16
Package
Description
3-Lead SC70
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
Package
Option
KS-3
KS-3
KS-3
RT-3
RT-3
RT-3
KS-3
KS-3
RT-3
RT-3
Ordering
Quantity
250
10,000
3,000
250
10,000
3,000
250
3,000
250
3,000
Branding
R2J
R2J
R2J
R2J
R2J
R2J
R2L
R2L
R2L
R2L
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
Model
ADR5041AKSZ-R21
ADR5041AKSZ-REEL1
ADR5041AKSZ-REEL71
ADR5041ARTZ-R21
ADR5041ARTZ-REEL1
ADR5041ARTZ-REEL71
ADR5041BKSZ-R21
ADR5041BKSZ-REEL71
ADR5041BRTZ-R21
ADR5041BRTZ-REEL71
ADR5043AKSZ-R21
ADR5043AKSZ-REEL1
ADR5043AKSZ-REEL71
ADR5043ARTZ-R21
ADR5043ARTZ-REEL1
ADR5043ARTZ-REEL71
ADR5043BKSZ-R21
ADR5043BKSZ-REEL71
ADR5043BRTZ-R21
ADR5043BRTZ-REEL71
ADR5044AKSZ-R21
ADR5044AKSZ-REEL1
ADR5044AKSZ-REEL71
ADR5044ARTZ-R21
ADR5044ARTZ-REEL1
ADR5044ARTZ-REEL71
ADR5044BKSZ-R21
ADR5044BKSZ-REEL71
ADR5044BRTZ-R21
ADR5044BRTZ-REEL71
ADR5045AKSZ-R21
ADR5045AKSZ-REEL1
ADR5045AKSZ-REEL71
ADR5045ARTZ-R21
ADR5045ARTZ-REEL1
ADR5045ARTZ-REEL71
ADR5045BKSZ-R21
ADR5045BKSZ-REEL71
ADR5045BRTZ-R21
ADR5045BRTZ-REEL71
1
Output
Voltage
(V)
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
2.500
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
3.0
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
4.096
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Initial
Accuracy
(mV)
5
5
5
5
5
5
2.5
2.5
2.5
2.5
6
6
6
6
6
6
3
3
3
3
8.192
8.192
8.192
8.192
8.192
8.192
4.096
4.096
4.096
4.096
10
10
10
10
10
10
5
5
5
5
Tempco
Industrial
(ppm/°C)
100
100
100
100
100
100
75
75
75
75
100
100
100
100
100
100
75
75
75
75
100
100
100
100
100
100
75
75
75
75
100
100
100
100
100
100
75
75
75
75
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
–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
Z = RoHS Compliant Part.
Rev. A | Page 14 of 16
Package
Description
3-Lead SC70
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SOT-23-3
3-Lead SC70
3-Lead SC70
3-Lead SOT-23-3
3-Lead SOT-23-3
Package
Option
KS-3
KS-3
KS-3
RT-3
RT-3
RT-3
KS-3
KS-3
RT-3
RT-3
KS-3
KS-3
KS-3
RT-3
RT-3
RT-3
KS-3
KS-3
RT-3
RT-3
KS-3
KS-3
KS-3
RT-3
RT-3
RT-3
KS-3
KS-3
RT-3
RT-3
KS-3
KS-3
KS-3
RT-3
RT-3
RT-3
KS-3
KS-3
RT-3
RT-3
Ordering
Quantity
250
10,000
3,000
250
10,000
3,000
250
3,000
250
3,000
250
10,000
3,000
250
10,000
3,000
250
3,000
250
3,000
250
10,000
3,000
250
10,000
3,000
250
3,000
250
3,000
250
10,000
3,000
250
10,000
3,000
250
3,000
250
3,000
Branding
R2N
R2N
R2N
R2N
R2N
R2N
R2Q
R2Q
R2Q
R2Q
R2S
R2S
R2S
R2S
R2S
R2S
R2U
R2U
R2U
R2U
R2W
R2W
R2W
R2W
R2W
R2W
R2Y
R2Y
R2Y
R2Y
R30
R30
R30
R30
R30
R30
R32
R32
R32
R32
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
NOTES
Rev. A | Page 15 of 16
ADR5040/ADR5041/ADR5043/ADR5044/ADR5045
NOTES
Purchase of licensed I2C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I2C Patent
Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specification as defined by Philips.
©2007 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D06526-0-12/07(A)
Rev. A | Page 16 of 16