5 V Precision Voltage
Reference/Temperature Transducer
a
REF02
FEATURES
PIN CONFIGURATIONS
5 V Output, ؎0.3% Max
Epoxy Mini-DIP (P-Suffix)
8-Lead Hermetic DIP (Z-Suffix)
8-Lead SOIC (S-Suffix)
TO-99 (J-Suffix)
Temperature Voltage Output, 2.1 mV/؇C
Adjustment Range, ؎3% Min
Excellent Temperature Stability, 8.5 ppm/؇C Max
Low Noise, 15 V p-p Max
Low Supply Current, 1.4 mA Max
Wide Input Voltage Range, 7 V to 40 V
High Load-Driving Capability, 20 mA
No External Components
NC
8
1
3
NC
7
5
NC
2
6
V
V
1
2
3
4
8
7
6
5
NC
NC
V
NC
OUT
IN
V
REF02
IN
TRIM
TEMP
TOP VIEW
TEMP
GND
4
OUT
(Not to Scale)
Short-Circuit Proof
GROUND
(CASE)
TRIM
NC = NO CONNECT*
NC = NO CONNECT*
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 D/A and A/D converters,
portable instrumentation, and digital voltmeters. The versatility
of the REF02 is enhanced by its use as a monolithic temperature
transducer. For new designs, please refer to ADR02.
REF02RC/883 LCC (RC-Suffix)
3
2
1
20 19
18
4
5
6
7
8
NC
NC
17 NC
V
IN
REF02
16
NC
NC
TEMP
NC
TOP VIEW
(Not to Scale)
15
V
OUT
14
NC
9
10 11 12 13
NC = NO CONNECT*
*NC = NO CONNECT. DO NOT CONNECT ANYTHING ON THESE PINS AS
SOME OF THEM ARE RESERVED FOR FACTORY TESTING PURPOSES.
SIMPLIFIED SCHEMATIC
INPUT
2
R7
R8
R14
Q15
R15
Q19
Q14
Q13
Q8
Q7
Q9
Q18
Q12
Q11
Q16
Q21
C1
Q17
Q10
R6
Q5
Q6
OUTPUT
6
R13
R3
R4
R12 6.1k⍀
R9 18k⍀
Q4
Q3
TRIM
R5
1.23V
Q20
R10
Q2
5
Q1
R1
R2
3
R11 2k⍀
TEMP
GROUND
4
REV. C
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use, norforanyinfringementsofpatentsorotherrightsofthirdpartiesthat
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
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Tel: 781/329-4700
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© Analog Devices, Inc., 2002