5 V Precision Voltage
Reference/Temperature Transducer
FEATURES PIN CONFIGURATIONS
5 V output: ±0.3% max
Temperature voltage output: 1.96 mV/°C
Adjustment range: ±3% min
Excellent temperature stability: 8.5 ppm/°C max
Low noise: 15 µV p-p max
Low supply current: 1.4 mA max
Wide input voltage range: 7 V to 40 V
High load-driving capability: 10 mA
No external components
Short-circuit proof
GENERAL DESCRIPTION
The REF02 precision voltage reference provides a stable 5 V
output that can be adjusted over a ±6% range with minimal
effect on temperature stability. Single-supply operation over an
input voltage range of 7 V to 40 V, low current drain of 1 mA,
and excellent temperature stability are achieved with an
improved band gap design. Low cost, low noise, and low power
make the REF02 an excellent choice whenever a stable voltage
reference is required. Applications include DACs and ADCs,
portable instrumentation, and digital voltmeters. The versatility
of the REF02 is enhanced by its use as a monolithic temperature
transducer. For new designs, refer to the ADR02.
OUTPUT RESISTORS
REF02 OPTION R9 R11 R12
Z PACKAGE AND 18kΩ 2kΩ 6.1kΩ
883C PRODUCT
P, S, J PACKAGES 18kΩ 4.5kΩ 15kΩ
C1
R3
R5
Q1
R1
3
TEMP
R2
*SEE OUTPUT RESISTORS
Rev. G
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.
R8
Q8
R6
R4
Q4
Q2
Q5
Q6
Q20
R10
Figure 4. Simplified Schematic
V
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
TEMP
GND
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
Figure 2. 8-Lead PDIP (P-Suffix), 8-Lead CERDIP (Z-Suffix),
and 8-Lead SOIC (S-Suffix)
NC
V
IN
NC
TEMP
NC
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
Figure 3. REF02RC/883 LCC (RC-Suffix)
R7
Q7
Q9
Q3
R14
Q14
Q10
Q12
Q11
≈
1.23V
Q13
Q21
Q17
R13
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2005 Analog Devices, Inc. All rights reserved.
NC
8
NC
1
2
IN
3
NC TRIM
GROUND
4
(CASE)
NC
7
V
6
OUT
5
Figure 1. TO-99 (J-Suffix)
NC
V
IN
4
5
6
7
8
1
REF02
2
TOP VIEW
3
(Not to Scale)
4
NC
REF02
TOP VIEW
(Not to Scale)
9
NC
GND
Q15
Q18
11NC10
TRIM
19NC20NC1NC2NC3
13NC12
Q16
NC
8
7
NC
V
6
OUT
TRIM
5
18
NC
17
NC
16
NC
15
V
14
NC
OUT
R15
Q19
R12*
R9*
R11*
REF02
00375-F-001
00375-F-002
00375-F-003
INPUT
2
OUTPUT
6
TRIM
5
GROUND
4
00375-F-004
REF02
TABLE OF CONTENTS
Specifications..................................................................................... 3
Electrical Specifications ............................................................... 3
Electrical Specifications ............................................................... 4
Electrical Specifications ............................................................... 5
Electrical Specifications ............................................................... 6
Absolute Maximum Ratings............................................................ 7
ESD Caution.................................................................................. 7
Typical Performance Characteristics............................................. 8
REVISION HISTORY
2/05—Rev. F to Rev. G
Changes to Specifications................................................................ 3
Change to Outline Dimensions.................................................... 13
7/04—Rev. E to Rev. F
Updated Format..................................................................Universal
Changes to Simplified Schematic................................................... 1
Changes to Specifications................................................................ 3
Changes to Specifications................................................................ 4
Changes to Specifications................................................................ 5
Changes to Specifications................................................................ 6
Changes to Figure 18...................................................................... 10
Changes to Ordering Guide.......................................................... 15
3/04—Rev. D to Rev. E.
Changes to Features.......................................................................... 1
Changes to Specifications................................................................ 2
Changes to Ordering Guide............................................................ 4
Replaced TPCs 3 and 4 .................................................................... 5
Added Temperature Monitoring section ...................................... 7
Updated Figure 5 ............................................................................. 7
Output Adjustment ........................................................................ 10
Temperature Monitoring........................................................... 10
Reference Stack with Excellent Line Regulation.................... 11
Precision Current Source .......................................................... 11
Supply Bypassing ........................................................................ 12
Outline Dimensions....................................................................... 13
Ordering Guide .......................................................................... 15
Deleted Table I ...................................................................................7
Updated Figure 6 ..............................................................................7
10/03—Rev. C to Rev. D.
Updated TPCs..................................................................... Universal
Changes to Features .........................................................................1
Changes to Electrical Specifications ..............................................2
Change to Absolute Maximum Ratings .........................................4
Changes to Ordering Guide.............................................................4
Deleted Typical Electrical Characteristics table ........................... 4
Deleted Wafer Test Limits ................................................................4
Deleted Figure 1.................................................................................4
10/02—Rev. B to Rev. C.
Changes to Features ..........................................................................1
Changes to General Description .....................................................1
Changes to Simplified Schematic....................................................1
Changes to Specifications.................................................................2
Changes to Absolute Maximum Ratings .......................................5
Changes to Package Type ................................................................5
Changes to Ordering Guide.............................................................5
Updated to Outline Dimensions .................................................. 11
Rev. G | Page 2 of 16
REF02
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
@ VIN = 15 V, TA = 25°C, unless otherwise noted.
Table 1.
REF02A/REF02E REF02/REF02H
Parameter Symbol Conditions
Min Typ Max Min Typ Max
Output Voltage VO IL = 0 mA 4.985 5.000 5.015 4.975 5.000 5.025 V
Output Adjustment Range ∆V
RP = 10 kΩ ±3 ±6 ±3 ±6 %
TRIM
Output Voltage Noise1 en p-p 0.1 Hz to 10 Hz
P, Z, and S Packages 15 15 µV p-p
J Package 20 20 µV p-p
883 Parts 10 15 10 15 µV p-p
Line Regulation
Load Regulation2 I
Turn-On Settling Time1 t
2
V
To ±0.1% of Final Value 5 5 µs
ON
= 8 V to 40 V 0.006 0.010 0.006 0.010 %/V
IN
= 0 mA to 10 mA 0.005 0.010 0.006 0.010 %/mA
L
Quiescent Supply Current ISY No Load 1.0 1.4 1.0 1.4 mA
Load Current IL 10 10 mA
Sink Current3 IS −0.3 –0.5 –0.3 –0.5 mA
Short-Circuit Current ISC VO = 0 30 30 mA
Temperature Voltage Output
Z Package and 883C Product V
P, S, and J Packages V
4
T
T
630 630 mV
550 550 mV
1
Guaranteed by design.
2
Line and load regulation specifications include the effect of self-heating.
3
During sink current test, the device meets the output voltage specified.
4
Limit current in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
Unit
Rev. G | Page 3 of 16
REF02
ELECTRICAL SPECIFICATIONS
@ V = 15 V, −55°C ≤ T ≤ +125°C for REF02A and REF02, 0°C ≤ T ≤ 70°C for REF02E and REF02H, I
IN A A L
unless otherwise noted.
Table 2.
REF02A/REF02E REF02/REF02H
Parameter Symbol Conditions
Output Voltage Change
with Temperature
Output Voltage Temperature
Coefficient
1, 2
3
Change in VO Temperature Coefficient
∆VOT
TCVO 3 8.5 10 25 ppm/°C
R
0°C ≤ TA ≤ 70°C 0.02 0.06 0.07 0.17 %
−55°C ≤ TA ≤ +125°C 0.06 0.15 0.18 0.45 %
= 10 kΩ 0.7 0.7 ppm/%
P
Min Typ Max Min Typ Max
with Output Adjustment
Line Regulation
= 8 V to 40 V4
V
IN
Load Regulation
= 0 mA to 8 mA4
I
L
Temperature Voltage Output
Temperature Coefficient
5
Z Package and 883C Product
P, S, and J Packages
TCVT
2.10 2.10 mV/°C
1.96 1.96 mV/°C
0°C ≤ TA ≤ 70°C 0.007 0.012 0.007 0.012 %/V
−55°C ≤ TA ≤ +125°C
0°C ≤ TA ≤ 70°C 0.006 0.010 0.007 0.012 %/mA
−55°C ≤ T
≤ +125°C
A
0.009 0.015
0.007 0.012
1
∆VOT is defined as the absolute difference between the maximum output voltage and the minimum output voltage over the specified temperature range expressed
as a percentage of 5 V.
−
VV
MIN
MAX
=∆
V
OT
2
∆VOT specification applies trimmed to 5000 V or untrimmed.
3
TCVO is defined as ∆VOT divided by the temperature range, i.e.,
TCV
O
4
Line and load regulation specifications include the effect of self-heating.
5
Limit current in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
V
V
∆
OT
=
C
°
70
1005×
= 0 mA,
Unit
0.009 0.015 %/V
0.009 0.015 %/mA
Rev. G | Page 4 of 16
REF02
ELECTRICAL SPECIFICATIONS
@ VIN = 15 V, TA = 25°C, unless otherwise noted.
Table 3.
REF02C REF02D
Parameter Symbol Conditions
Min Typ Max Min Typ Max
Output Voltage VO IL = 0 mA 4.950 5.000 5.050 4.900 5.000 5.100 V
Output Adjustment Range ∆V
RP = 10 kΩ ±2.7 ±6.0 ±2.0 ±6.0 %
TRIM
Output Voltage Noise1 en p-p 0.1 Hz to 10 Hz
P, Z, and S Packages 15 µV p-p
J Package 20 15 µV p-p
883 Parts 12 18 20 µV p-p
Line Regulation
2
V
= 8 V to 40 V 0.009 0.015 0.010 0.04 %/V
IN
IL = 0 mA to 8 mA 0.006 0.015 %/mA Load Regulation2
I
= 0 mA to 4 mA 0.015 0.04 %/mA
L
Turn-On Settling Time1 t
To ±0.1% of Final Value 5 5 µs
ON
Quiescent Supply Current ISY No Load 1.0 1.6 1.0 2.0 mA
Load Current IL 8 8 mA
Sink Current3 IS −0.3 −0.5 −0.3 −0.5 mA
Short-Circuit Current ISC VO = 0 30 30 mA
Temperature Voltage Output
Z Package and 883C Product V
P, S, and J Packages V
4
T
T
630 630 mV
550 550 mV
1
Guaranteed by design.
2
Line and load regulation specifications include the effect of self-heating.
3
During sink current test the device meets the output voltage specified.
4
Limit current in or out of Pin 3 to 50 nA and capacitance on Pin 3 to 30 pF.
Unit
Rev. G | Page 5 of 16