ADR293 ,Low Noise, Micropower 5.0 V Precision Voltage Reference Data Sheet (Rev D, 05/2011)GENERAL DESCRIPTION The ADR293 is a low noise, micropower precision voltage 15 ppm/°C, and 25 ppm/° ..
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ADR293
Low Noise, Micropower 5.0 V Precision Voltage Reference Data Sheet (Rev D, 05/2011)
ANALOG
DEVICES
Low Noise, Micropower
5.0 ll Precision Voltage Reference
ADR293
FEATU RES
6.0 V to 15 V supply range
Supply current: 15 pA maximum
Low noise: 15 pV p-p typical (0.1 Hz to 10 Hz)
High output current: 5 mA
Temperature range: -4ty'C to +125°C
Pin-compatible with the REF02/REF19x
APPLICATIONS
Portable instrumentation
Precision reference for 5 V systems
ADC and DAC reference
Solar-powered applications
Loop-current powered instruments
GENERAL DESCRIPTION
The ADR293 is a low noise, micropower precision voltage
reference that utilizes an XFET' (eXtra implanted junction FET)
reference circuit. The XFET architecture offers significant
performance improvements over traditional band gap and
buried Zener-based references. Improvements include one
quarter the voltage noise output of band gap references
operating at the same current, very low and ultralinear
temperature drift, low thermal hysteresis, and excellent long-
term stability.
The ADR293 is a series voltage reference providing stable and
accurate output voltage from a 6.0 V supply. Quiescent current
is only 15 pA maximum, making this device ideal for battery
powered instrumentation. Three electrical grades are available
offering initial output accuracy of t3 mV, t6 mV, and :10 mV.
Temperature coefficients for the three grades are 8 ppm/°C,
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
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PIN CONFIGURATIONS
NC E E NC
VIN [E ADR293 Cr] NC
TOP VIEW
NC [E] (Not to Scale) E VOUT
GND E E NC
NC = NO CONNECT
Figure 1. 8-Lead Narrow Body SOIC (R-8)
00164400 1
NC n . ts NC
vm a ADR293 NC
TOPVIEW
NC l (None Scale) , VOUT
GND n 5 NC
NC = No CONNECT
Figure 2. 8-Lead TSSOP (RU-8)
15 ppm/°C, and 25 ppm/OC maximum. Line regulation and load
regulation are typically 30 ppm/V and 30 ppm/mA, respectively,
maintaining the reference's overall high performance.
The ADR293 is specified over the extended industrial
temperature range of -40oC to +125°C. This device is available
in the 8-lead SOIC and 8-lead TSSOP packages.
Table 1. ADR29x Products
Temperature
Output Initial Coefficient
Device Voltage M Accuracy (%) (ppm/°C max)
ADR291 2.500
ADR292 4.096
ADR293 5.000
0.08, 0.12, 0.24 8, 15, 25
0.07, 0.10, 0.15 8, 15, 25
0.06, 0.12, 0.20 8, 15, 25
One Technology Way, P.0. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781 .329.4700
Fax: 781.461.3113 ©2001-2011 Analog Devices, Inc. All rights reserved.
ADR293
TABLE OF CONTENTS
Features m............................................................................................. 1
Applications _...................................................................................... 1
Pin Configurations F.......................................................................... 1
General Description P........................................................................ 1
Revision History F.............................................................................. 2
Specifications w.................................................................................... 3
Electrical Specifications _.............................................................. 3
Absolute Maximum Ratings V........................................................... 5
Thermal Resistance ...................................................................... 5
ESD Caution .................................................................................. 5
Typical Performance Characteristics w............................................ 6
REVISION HISTORY
5/1 l-Rev. C to Rev. D
Delete Negative Precision Reference Without Precision
Resistors Section w............................................................................ 11
Delete Figure 23 and Figure 24, Renumbered Sequentially ...... 11
9/ IO-Rev. B to Rev. C
Changes to Table 2 and Table 3 ....................................................... 3
Changes to Table 4 q........................................................................... 4
Changes to Figure 10, Figure 11, Figure 13 ................................... 7
Changes to Captions for Figure 17 to Figure 19 ........................... 8
Terminology ....................................................................................... 9
Theory of Operation _..................................................................... 10
Device Power Dissipation Considerations .............................. 10
Basic Voltage Reference Connections ..................................... 10
Noise Performance F.................................................................... 10
Turn-On Time _........................................................................... 10
Applications _.................................................................................... 1 1
Kelvin Connections V................................................................... 11
Voltage Regulator for Portable Equipment ............................. 11
Outline Dimensions M...................................................................... 12
Ordering Guide w......................................................................... 12
6/07-Rev. A to Rev. B
Updated Format w................................................................. Universal
Changes to Table 1 ............................................................................. 1
Updated Outline Dimensions ..... .. 13
Changes to Ordering Guide F......................................................... 13
3/01-Rev. 0 to Rev. A
Rev. D l Page 2 of 12
ADR293
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
Vs = 6.0 V, TA = 25°C, unless otherwise noted.
Table 2.
Parameter Symbol Conditions Min Typ Max Unit
OUTPUT VOLTAGE Vour IOUT = 0 mA
E Grade 4.997 5.000 5.003 V
F Grade 4.994 5.000 5.006 V
G Grade 4.990 5.000 5.010 V
INITIAL ACCURACY low = 0 mA
E Grade -3 +3 mV
0.06 %
F Grade -6 +6 mV
0.12 %
G Grade -10 +10 mV
0.20 %
LINE REGULATION AVOUT /AVIN 6.0 V to 15 V, Iom = 0 mA
E, F Grades 30 100 ppmN
G Grade 40 150 ppmN
LOAD REGULATION AVoUT /NLOAD Vs = 6.0 V, lom = 0 mA to 5 mA
E, F Grades 30 100 ppm/mA
G Grade 40 150 ppm/mA
LONG-TERM STABILITY AVOUT After 1000 hours of operation @ 125°C 50 ppm
VOLTAGE NOISE eN p-p f= 0.1 Hz to 10 Hz 15 pV p-p
VOLTAGE NOISE DENSITY eN f= 1 kHz 640 nV/VHz
Vs = 6.0 V, TA = -25''C to +85°C, unless otherwise noted.
Table 3.
Parameter Symbol Conditions Min Typ Max Unit
TEMPERATU RE COEFFICIENT TCVOUT lom = 0 mA
E Grade 3 8 ppm/°C
F Grade 5 15 ppm/°C
G Grade 10 25 ppm/°C
LINE REGULATION AVoUT/AVm 6.0 V to 15 V, low = 0 mA
E, F Grades 35 150 ppmN
G Grade 50 200 ppmN
LOAD REGULATION AVOUT/AILOAD Vs = 6.0 V, low = 0 mA to 5 mA
E, F Grades 20 150 ppm/mA
G Grade 30 200 ppm/mA
Rev. D l Page 3 of 12
ADR293
Vs = 6.0 V, TA = -40oC to +125°C, unless otherwise noted.
Table 4.
Parameter Symbol Conditions Min Typ Max Unit
TEMPERATURE COEFFICIENT TCVom lour = 0 mA
E Grade 3 1O ppm/°C
F Grade 5 20 ppm/°C
G Grade 10 30 ppm/°C
LINE REGULATION AVOUT/AVIN 6.0 V to 15 V, IOUT = 0 mA
E, F Grades 40 200 ppmN
G Grade 70 250 ppmN
LOAD REGULATION AVOUT/AILOAD Vs = 6.0 V, IOUT = 0 mA to 5 mA
E, F Grades 20 200 ppm/mA
G Grade 30 300 ppm/mA
SUPPLY CURRENT Is @ 25°C 11 15 pA
15 20 pA
THERMAL HYSTERESIS Vouwvs 8-lead SOIC_N 72 ppm
8-lead TSSOP 157 ppm
Rev. D l Page4of 12
ADR293
ABSOLUTE MAXIMUM RATINGS
Table 5.
Parameter Rating
SupplyVoltage 18V
Output Short-Circuit Duration to GND Indefinite
Storage Temperature Range -65''C to +150°C
Operating Temperature Range -40''C to +125°C
Junction Temperature Range -6S'C to +150°C
Lead Temperature (Soldering, 60 sec) 300°C
THERMAL RESISTANCE
91A is specified for worst-case conditions; that is, 61A is specified
for the device in socket testing. In practice, 61A is specified for
the device soldered in a circuit board.
Table 6. 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.
PackageType " thc Unit
8-Lead SOIC_N (R-8) 158 43 ''C/W
8-Lead TSSOP (RU-8) 240 43 ''C/W
ESD CAUTION
ESD (electrostatic discharge) sensitive device.
Charged devices and circuit boards can discharge
A without detection. Although this product features
patented or proprietary protection circuitry, damage
it gs may occur on devices subjected to high energy ESD.
Therefore, proper ESD precautions should be taken to
avoid performance degradation or loss of functionality.
Rev. D l Page 5 of 12
