+5V Precision
VOLTAGE REFERENCE
FEATURES
q
OUTPUT VOLTAGE: +5V
0.2% max
q
EXCELLENT TEMPERATURE STABILITY:
10ppm/
C max (40
C to +85
C)
q
LOW NOISE: 10
Vp-p max (0.1Hz to 10Hz)
q
EXCELLENT LINE REGULATION:
0.01%/V max
q
EXCELLENT LOAD REGULATION:
0.008%/mA max
q
LOW SUPPLY CURRENT: 1.4mA max
q
SHORT-CIRCUIT PROTECTED
q
WIDE SUPPLY RANGE: 8V to 40V
q
INDUSTRIAL TEMPERATURE RANGE:
40
C to +85
C
q
PACKAGE OPTIONS: DIP-8, SO-8
REF02
APPLICATIONS
q
PRECISION REGULATORS
q
CONSTANT CURRENT SOURCE/SINK
q
DIGITAL VOLTMETERS
q
V/F CONVERTERS
q
A/D AND D/A CONVERTERS
q
PRECISION CALIBRATION STANDARD
q
TEST EQUIPMENT
DESCRIPTION
The REF02 is a precision 5V voltage reference. The
drift is laser trimmed to 10ppm/
C max over the
extended industrial and military temperature range.
The REF02 provides a stable 5V output that can be
externally adjusted over a
6% range with minimal
effect on temperature stability. The REF02 operates
from a single supply with an input range of 8V to 40V
with a very low current drain of 1mA, and excellent
temperature stability due to an improved design. Excel-
lent line and load regulation, low noise, low power, and
low cost make the REF02 the best choice whenever a
5V voltage reference is required. All popular package
options are available: plastic DIP, and SO. The REF02
is an ideal choice for portable instrumentation, tem-
perature transducers, Analog-to-Digital (A/D) and Digi-
tal-to-Analog (D/A) converters, and digital voltmeters.
V
OUT
REF02
V
IN
Trim
GND
+5V Reference with Trimmed Output
2
6
5
4
R
POT
10k
(Optional)
Output
3
Temp
REF0
2
REF0
2
1993 Burr-Brown Corporation
SBVS003A
Printed in U.S.A. July, 2000
International Airport Industrial Park Mailing Address: PO Box 11400, Tucson, AZ 85734 Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 Tel: (520) 746-1111
Twx: 910-952-1111 Internet: http://www.burr-brown.com/ Cable: BBRCORP Telex: 066-6491 FAX: (520) 889-1510 Immediate Product Info: (800) 548-6132
For most current data sheet and other product
information, visit www.burr-brown.com
2
REF02
SPECIFICATIONS
ELECTRICAL
At T
A
= +25
C and V
IN
= +15V power supply, unless otherwise noted.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
REF02A
REF02B
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT VOLTAGE
I
LOAD
= 0mA
4.985
5.0
5.015
4.990
5.010
V
Change with Temperature
(1, 2)
(
V
OT
)
40
C to +85
C
0.05
0.19
0.05
0.13
%
OUTPUT VOLTAGE DRIFT
(3)
40
C to +85
C (TCV
O
)
4
15
4
10
ppm/
C
LONG-TERM STABILITY
2000h Test
First 1000h
100
100
ppm
Second 1000h
50
50
ppm
OUTPUT ADJUSTMENT
RANGE
R
POT
= 10k
(6)
3
6
%
CHANGE IN V
O
TEMP
COEFFICIENT WITH
OUTPUT ADJUSTMENT
(55
C to +125
C)
R
POT
= 10k
0.7
ppm/%
OUTPUT VOLTAGE NOISE
0.1Hz to 10Hz
(5)
4
10
Vp-p
LINE REGULATION
(4)
V
IN
= 8V to 33V
0.006
0.010
%/V
40
C to +85
C
V
IN
= 8.5V to 33V
0.008
0.012
LOAD REGULATION
(4)
I
L
= 0mA to +10mA
0.005
0.010
0.008
%/mA
40
C to +85
C
I
L
= 0mA to +10mA
0.007
0.012
0.010
TURN-ON SETTLING TIME
To
0.1%
5
s
of Final Value
QUIESCENT CURRENT
No Load
1.0
1.4
mA
LOAD CURRENT (SOURCE)
10
21
mA
LOAD CURRENT (SINK)
0.3
0.5
mA
SHORT-CIRCUIT CURRENT
V
OUT
= 0
30
mA
POWER DISSIPATION
No Load
15
21
mW
TEMPERATURE VOLTAGE
OUTPUT
(7)
630
mV
TEMPERATURE COEFFICIENT
of Temperature Pin Voltage
55
C to +125
C
2.1
mV/
C
TEMPERATURE RANGE
Specification
REF02A, B, C
40
+85
C
V
MAX
V
MIN
5V
V
O
=
x 100
NOTES: (1)
V
OT
is defined as the absolute difference between the maximum output and the minimum output voltage over the specified temperature range expressed
as a percentage of 5V: (2)
V
OT
specification applies trimmed to +5.000V or untrimmed. (3) TCV
O
is defined as
V
OT
divided by
the temperature range. (4) Line and load regulation specifications include the effect of self heating. (5) Sample tested. (6) 10k
potentiometer connected between
V
OUT
and ground with wiper connected to Trim pin. See Figure on page 1. (7) Pin 3 is insensitive to capacitive loading. The temperature voltage will be modified by
7mV for each
A of loading.
3
REF02
Input Voltage ..................................................................................... +40V
Operating Temperature
P, U ................................................................................ 40
C to +85
C
Storage Temperature Range
P, U ................................................................................ 65
C to +125
Output Short Circuit Duration (to Ground or V
IN
) ........................ Indefinite
Junction Temperature ....................................................... 65
C to +150
JA
P ......................................................................................... 120
C/W
U ........................................................................................... 80
C/W
Lead Temperature (soldering, 60s) ............................................... +300
C
ABSOLUTE MAXIMUM RATINGS
PIN CONFIGURATIONS
Top View
DIP/SO
NC
V
IN
Temp
GND
NC
NC
V
OUT
Trim
1
2
3
4
8
7
6
5
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION
PACKAGE
SPECIFICATION
MAX DRIFT
DRAWING
TEMPERATURE
ORDERING
TRANSPORT
PRODUCT
V
OUT
at 25
C
(ppm/
C)
PACKAGE
NUMBER
RANGE
NUMBER
MEDIA
REF02AU
5V
15mV
15
SO-8
182
40
C to +85
C
--
--
REF02BU
5V
10mV
10
SO-8
182
40
C to +85
C
--
--
REF02AP
5V
15mV
15
DIP-8
006
40
C to +85
C
--
--
REF02BP
5V
10mV
10
DIP-8
006
40
C to +85
C
--
--
4
REF02
TYPICAL PERFORMANCE CURVES
AT T
A
= +25
C, unless otherwise noted.
OUTPUT WIDEBAND NOISE
vs BANDWIDTH (0.1Hz to frequency indicated)
Frequency (Hz)
Output Noise (Vp-p)
10
100
1k
10k
100k
1M
1k
100
10
1
OUTPUT CHANGE DUE TO THERMAL SHOCK
Time (s)
Percent Change in Output Voltage (%)
0.035
0.03
0.025
0.02
0.015
0.01
0.005
0
10
0
10
20
30
40
50
60
Device immersed
in 75C oil bath
T
A
=
25C
T
A
=
75C
V
IN
= 15V
MAXIMUM LOAD CURRENT vs INPUT VOLTAGE
Maximum Load Current (mA)
Input Voltage (V)
5
10
15
20
25
35
30
25
20
15
10
5
0
500mW
Maximum
Dissapation
Short Circuit Protection
T
A
= +25C
LINE REGULATION vs SUPPLY VOLTAGE
Input Voltage (V)
6
5
4
3
2
1
0
Line Regulation (%/V)
6
6.5
7
7.5
8
8.5
9
9.5
10
85C
25C
125C
55C
LINE REGULATION vs SUPPLY VOLTAGE
Input Voltage (V)
0.03
0.025
0.02
0.015
0.01
0.005
0
Line Regulation (%/V)
5
T
A
= 25C
10
15
20
25
30
LINE REGULATION vs FREQUENCY
Line Regulation (dB)
Frequency (Hz)
10
100
1k
10k
100k
1M
Line Regulation (%/V)
96
86
76
66
56
46
36
26
16
6
0.0003
0.001
0.003
0.01
0.031
0.1
0.31
1.0
3.1
10.0
V
S
= 15V
T
A
= +25C
5
REF02
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C, unless otherwise noted.
NORMALIZED LOAD REGULATION (
IL = 10mA)
vs TEMPERATURE
60
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
Temperature (C)
40
20
0
20
40
60
80
100
120
140
Load Reg (T) / Load Reg (25
C)
V
IN
= 15V
NORMALIZED LINE REGULATION vs TEMPERATURE
60
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
Temperature (C)
40
20
0
20
40
60
80
100
120
140
Line Reg (T) / Line Reg (25
C)
REF02 V
OUT
Temperature
Volt
5.002
5.0015
5.001
5.0005
5
4.9995
4.999
4.9985
4.998
4.9975
60
40
20
0
20
40
60
80
100
120
140
MAXIMUM LOAD CURRENT vs TEMPERATURE
Temperature (C)
30
25
20
15
10
5
0
Maximum Load Current (mA)
60 40
20
0
20
40
60
80
100
120 140
V
IN
= 15V
QUIESCENT CURRENT vs TEMPERATURE
Temperature (C)
1.1
1.08
1.06
1.04
1.02
1.0
0.98
Quiescent Current (mA)
60 40
20
0
20
40
60
80
100
120 140
V
IN
= 15V
TYPICAL TEMPERATURE VOLTAGE OUTPUT
vs TEMPERATURE (REF02M)
Temperature Voltage Output (mV)
Temperature (C)
60 40
20
0
20
40
60
80
100
120 140
830
780
730
680
630
580
530
480
430
V
IN
= 15V
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