Low Noise, Micropower
5.0 V Precision Voltage Reference
ADR293-EP
6.0 V to 15 V supply range
Supply current: 15 μA maximum
Low noise: 15 μV p-p typical (0.1 Hz to 10 Hz)
High output current: 5 mA
Pin-compatible with the REF02/REF19x
ENHANCED PRODUCT FEATURES
Supports defense and aerospace applications (AQEC
standard)
Military temperature range (−55°C to +125°C)
Controlled manufacturing baseline
1 assembly/test site
1 fabrication site
Enhanced product change notification
Qualification data available on request
PIN CONFIGURATION
ADR293-EP
NC
1
8
NC
VIN
2
7
NC
NC
3
6
VOUT
GND
4
5
NC
TOP VIEW
(Not to Scale)
NC = NO CONNECT
09356-002
FEATURES
Figure 1. 8-Lead TSSOP (RU-8)
APPLICATIONS
Portable instrumentation
Precision reference for 5 V systems
ADC and DAC reference
Solar-powered applications
GENERAL DESCRIPTION
The ADR293-EP 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 longterm stability.
The ADR293-EP is a series voltage reference providing stable
and accurate output voltage from a 6.0 V supply. Quiescent
current is only 15 μA maximum, making this device ideal for
battery powered instrumentation. The temperature coefficient
is 30 ppm/°C maximum over the military temperature range,
and the initial error is only 0.2% at 25°C. Line regulation and
load regulation are typically 70 ppm/V and 30 ppm/mA,
respectively, maintaining the reference’s overall high
performance.
The ADR293-EP is specified over the military temperature
range of –55°C to +125°C. This device is available in an 8-lead
TSSOP package.
Additional applications information is available in the ADR293
data sheet.
Rev. 0
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
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
©2010 Analog Devices, Inc. All rights reserved.
ADR293-EP
TABLE OF CONTENTS
Features .............................................................................................. 1
Electrical Specifications ................................................................3
Enhanced Product Features ............................................................ 1
Absolute Maximum Ratings ............................................................5
Applications ....................................................................................... 1
Thermal Resistance .......................................................................5
Pin Configuration ............................................................................. 1
ESD Caution...................................................................................5
General Description ......................................................................... 1
Typical Performance Characteristics ..............................................6
Revision History ............................................................................... 2
Outline Dimensions ..........................................................................9
Specifications..................................................................................... 3
Ordering Guide .............................................................................9
REVISION HISTORY
9/10—Revision 0: Initial Version
Rev. 0 | Page 2 of 12
ADR293-EP
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
VS = 6.0 V, TA = 25°C, unless otherwise noted.
Table 1.
Parameter
OUTPUT VOLTAGE
T Grade
INITIAL ACCURACY
T Grade
Symbol
VOUT
LINE REGULATION
T Grade
LOAD REGULATION
T Grade
LONG-TERM STABILITY
VOLTAGE NOISE
VOLTAGE NOISE DENSITY
ΔVOUT /ΔVIN
Conditions
IOUT = 0 mA
Min
Typ
Max
Unit
4.990
5.000
5.010
V
+10
0.20
mV
%
40
150
ppm/V
30
50
15
640
150
ppm/mA
ppm
μV p-p
nV/√Hz
IOUT = 0 mA
–10
6.0 V to 15 V, IOUT = 0 mA
ΔVOUT /ΔILOAD
VS = 6.0 V, IOUT = 0 mA to 5 mA
ΔVOUT
eN p-p
eN
After 1000 hours of operation @ 125°C
f = 0.1 Hz to 10 Hz
f = 1 kHz
VS = 6.0 V, TA = −25°C to +85°C, unless otherwise noted.
Table 2.
Parameter
TEMPERATURE COEFFICIENT
T Grade
LINE REGULATION
T Grade
LOAD REGULATION
T Grade
Symbol
TCVOUT
Conditions
IOUT = 0 mA
ΔVOUT/ΔVIN
6.0 V to 15 V, IOUT = 0 mA
ΔVOUT/ΔILOAD
VS = 6.0 V, IOUT = 0 mA to 5 mA
Rev. 0 | Page 3 of 12
Min
Typ
Max
Unit
10
25
ppm/°C
50
200
ppm/V
30
200
ppm/mA
ADR293-EP
VS = 6.0 V, TA = −55°C to +125°C, unless otherwise noted.
Table 3.
Parameter
TEMPERATURE COEFFICIENT
T Grade
LINE REGULATION
T Grade
LOAD REGULATION
T Grade
SUPPLY CURRENT
Symbol
TCVOUT
Conditions
IOUT = 0 mA
ΔVOUT/ΔVIN
6.0 V to 15 V, IOUT = 0 mA
ΔVOUT/ΔILOAD
VS = 6.0 V, 0 mA to 5 mA
THERMAL HYSTERESIS
T Grade
VOUT-HYS
IS
@ 25°C
Min
Typ
Max
Unit
10
30
ppm/°C
70
250
ppm/V
30
11
300
15
ppm/mA
μA
15
20
μA
157
Rev. 0 | Page 4 of 12
ppm
ADR293-EP
ABSOLUTE MAXIMUM RATINGS
THERMAL RESISTANCE
Table 4.
Parameter
Supply Voltage
Output Short-Circuit Duration to GND
Storage Temperature Range
Operating Temperature Range
Junction Temperature Range
Lead Temperature (Soldering, 60 sec)
Rating
18 V
Indefinite
−65°C to +150°C
−55°C to +125°C
−65°C to +150°C
300°C
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.
θJA is specified for worst-case conditions; that is, θJA is specified
for the device in socket testing. In practice, θJA is specified for
the device soldered in a circuit board.
Table 5. Thermal Resistance
Package Type
8-Lead TSSOP (RU-8)
ESD CAUTION
Rev. 0 | Page 5 of 12
θJA
240
θJC
43
Unit
°C/W
ADR293-EP
TYPICAL PERFORMANCE CHARACTERISTICS
TA = 25°C, unless otherwise noted.
5.006
80
3 TYPICAL PARTS
VS = 6V
70
LINE REGULATION (ppm/mA)
OUTPUT VOLTAGE (V)
5.004
5.002
5.000
4.998
VS = 6.1V
IL = 0 TO 5mA
60
50
40
30
20
4.996
30
60
90
120
TEMPERATURE (°C)
0
–60
1
ΔVOUT FROM NOMINAL (mV)
13
12
11
VS = 15V
10
VS = 6V
0
60
30
60
90
120
TEMPERATURE (°C)
0
–1
TA = +125°C
TA = –40°C
–2
–4
0.1
1
SOURCING LOAD CURRENT (mA)
VIN = 15V
TA = 25°C
VOLTAGE NOISE DENSITY (nV/ Hz)
VS = 6.1V TO 15B
40
30
20
10
30
60
90
TEMPERATURE (°C)
120
09356-006
LINE REGULATION (ppm/V)
50
0
10
Figure 6. ΔVOUT from Nominal vs. Load Current
60
–30
120
TA = +25°C
Figure 3. Supply Current vs. Temperature
0
–60
90
–3
09356-005
SUPPLY CURRENT (µA)
2
–30
30
Figure 5. Load Regulation vs. Temperature
14
8
–60
0
TEMPERATURE (°C)
Figure 2. VOUT vs. Temperature
9
–30
09356-010
0
Figure 4. Line Regulation vs. Temperature
1k
100
10
100
FREQUENCY (Hz)
Figure 7. Voltage Noise Density vs. Frequency
Rev. 0 | Page 6 of 12
1k
09356-011
–30
09356-003
4.994
–60
09356-009
10
ADR293-EP
120
IL = 5mA
VS = 6V
RIPPLE REJECTION (dB)
100
5V/DIV
80
60
40
20
100
FREQUENCY (Hz)
1k
09356-012
50µs/DIV
0
10
Figure 8. Ripple Rejection vs. Frequency
OUTPUT IMPEDANCE (Ω)
100
09356-015
2V/DIV
Figure 11. Turn-On Time
IL = 5mA
VS = 6V
IL = 0mA
5V/DIV
10
1
10
100
1k
FREQUENCY (Hz)
10k
09356-013
50µs/DIV
09356-016
2V/DIV
Figure 9. Output Impedance vs. Frequency
Figure 12. Turn-Off Time
IL = 5mA
1ms/DIV
Figure 13. Load Transient Response
Figure 10. 0.1 Hz to 10 Hz Noise
Rev. 0 | Page 7 of 12
09356-017
1s/DIV
09356-014
10µV p-p
ADR293-EP
18
II = 5mA
CL = 1nF
TEMPERATURE
+25°C → –40°C →
+85°C → +25°C
09356-018
12
10
8
6
4
2
0
–200 –160 –120 –80
Figure 14. Load Transient Response
–40
0
40
80 120
VOUT DEVIATION (ppm)
160
200
Figure 16. Typical Hysteresis for the ADR29x Product
09356-019
II = 5mA
CL = 100nF
1ms/DIV
14
Figure 15. Load Transient Response
Rev. 0 | Page 8 of 12
240
09356-020
1ms/DIV
FREQUENCY IN NUMBER OF UNITS
16
ADR293-EP
OUTLINE DIMENSIONS
3.10
3.00
2.90
8
5
4.50
4.40
4.30
1
6.40 BSC
4
PIN 1
0.65 BSC
0.15
0.05
1.20
MAX
COPLANARITY
0.10
0.30
0.19
SEATING 0.20
PLANE
0.09
8°
0°
0.75
0.60
0.45
COMPLIANT TO JEDEC STANDARDS MO-153-AA
Figure 17. 8-Lead Thin Shrink Small Outline Package [TSSOP]
(RU-8)
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADR293TRU-EP
ADR293TRU-EP-R7
Output
Voltage (V)
5.00
5.00
Initial
Accuracy (%)
0.20
0.20
Temperature
Coefficient
(ppm/°C max)
30
30
Temperature
Range
−55°C to +125°C
−55°C to +125°C
Rev. 0 | Page 9 of 12
Package
Description
8-Lead TSSOP
8-Lead TSSOP
Package
Option
RU-8
RU-8
Ordering
Quantity
96
1,000
ADR293-EP
NOTES
Rev. 0 | Page 10 of 12
ADR293-EP
NOTES
Rev. 0 | Page 11 of 12
ADR293-EP
NOTES
©2010 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D09356-0-9/10(0)
Rev. 0 | Page 12 of 12