ANALOG DEVICES ADR510 Service Manual
1.0 V Precision Low Noise
V
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FEATURES
Precision 1.000 V voltage reference
Ultracompact 3 mm × 3 mm SOT-23 package
No external capacitor required
Low output noise: 4 V p-p (0.1 Hz to 10 Hz)
Initial accuracy: ±0.35% maximum
Temperature coefficient: 70 ppm/°C maximum
Operating current range: 100 µA to 10 mA
Output impedance: 0.3 Ω maximum
Temperature range: −40°C to +85°C
APPLICATIONS
Precision data acquisition systems
Battery-powered equipment
Cellular phone
Notebook computer
PDA
GPS
3 V/5 V, 8-/12-bit data converters
Portable medical instruments
Industrial process control systems
Precision instruments
Shunt Voltage Reference
ADR510
PIN CONFIGURATION
ADR510
V+
1
3
TRIM/NC
2
V–
TOP VIEW
(Not to Scale)
NC = NO CONNECT
Figure 1. 3-Lead SOT-23-3
03270-001
GENERAL DESCRIPTION
Designed for space critical applications, the ADR510 is a low
voltage (1.000 V), precision shunt-mode voltage reference in an
ultracompact (3 mm × 3 mm) SOT-23-3 package. The ADR510
features low temperature drift (70 ppm/°C), high accuracy
(±0.35%), and ultralow noise (4 μV p-p) performance.
The ADR510 advanced design eliminates the need for an external
pacitor, yet it is stable with any capacitive load. The minimum
ca
operating current increases from 100 μA to a maximum of 10 mA.
This low operating current and ease of use make the ADR510
ideally suited for handheld battery-powered applications.
A TRIM terminal is available on the ADR510 to provide
djustment of the output voltage over ±0.5% without affecting
a
the temperature coefficient of the device. This feature provides
users with the flexibility to trim out any system errors.
S
IL + I
ADR510
R
Q
BIAS
I
L
V
OUT
I
Figure 2. Typical Operating Circuit
C
Q
OUT
(OPTIONAL)
R
BIAS
= 1.0V
VS – V
=
IL + I
OUT
Q
3270-002
Table 1. ADR510
Part
Output
Vo
ltag e, V
Initial Accuracy
OUT
Temperature
Coefficient
ADR510A 1.000 V 3.5 mV 0.35% 70 ppm/°C
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Anal og Devices for its use, nor for any infringements of patents or ot her
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 ©2003–2007 Analog Devices, Inc. All rights reserved.
ADR510
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TABLE OF CONTENTS
Features.............................................................................................. 1
Applications....................................................................................... 1
Pin Configuration............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Absolute Maximum Ratings............................................................ 4
Thermal Resistance ...................................................................... 4
ESD Caution.................................................................................. 4
Typical Performance Characteristics ............................................. 5
REVISION HISTORY
9/07—Rev. A to Rev. B
Changes to Adjustable Precision Voltage Source Section ........... 8
Changes to Figure 11........................................................................ 8
Changes to Figure 12........................................................................ 8
4/07—Rev. 0 to Rev. A
Changes to Table 1............................................................................ 1
C
hanges to Table 3 and Table 4....................................................... 4
Changes to Figure 4, Figure 5, Figure 6, and Figure 7................. 5
Changes to Thermal Hysteresis Section ........................................ 7
Changes to Figure 11........................................................................ 8
Changes to Figure 14 and Equation 5............................................ 9
Changes to Ordering Guide.......................................................... 10
8/03—Revision 0: Initial Version
Parameter Definitions.......................................................................7
Temperature Coefficient...............................................................7
Thermal Hysteresis .......................................................................7
Applications Information.................................................................8
Adjustable Precision Voltage Source...........................................8
Output Voltage Trim.....................................................................8
Using the ADR510 with Precision Data Converters ................8
Precise Negative Voltage Reference ............................................9
Outline Dimensions....................................................................... 10
Ordering Guide .......................................................................... 10
Rev. B | Page 2 of 12
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SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
IIN = 100 μA to 10 mA @ TA = 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage1 V
Initial Accuracy V
V
Temperature Coefficient, A Grade TCV
−40°C < TA < +85°C 85 ppm/°C
Output Voltage Change vs. IIN ∆VR IIN = 0.1 mA to 10 mA 3 mV
Dynamic Output Impedance (∆VR/∆IR) IIN = 1 mA ± 100 μA 0.3 Ω
Minimum Operating Current IIN 0°C < TA < 70°C 100 μA
Voltage Noise eN p-p f = 0.1 Hz to 10 Hz 4 μV p-p
Turn-On Settling Time2 tR To within 0.1% of output 10 μs
Output Voltage Hysteresis V
1
The forward diode voltage characteristic at −1 mA is typically 0.65 V.
2
Measured without a load capacitor.
0.9965 1.0 1.0035 V
OUT
−3.5 +3.5 mV
OUTERR
−0.35 +0.35 %
OUTERR%
0°C < TA < 70°C 70 ppm/°C
OUT
50 ppm
OUT_HYS
Rev. B | Page 3 of 12
ADR510
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ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
Reverse Current 25 mA
Forward Current 20 mA
Storage Temperature Range −65°C to +150°C
Operating Temperature Range −40°C to +85°C
Junction Temperature Range −65°C to +150°C
Lead Temperature (Soldering, 60 sec) 300°C
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages. Package
power dissipation = (T
Table 4. Thermal Resistance
Package Type θJA θ
3-Lead SOT-23-3 (RT-3) 230 146 °C/W
− TA)/θJA.
JMAX
Unit
JC
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. B | Page 4 of 12
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