5 V Precision Voltage
Reference/Temperature Transducer
REF02
FEATURES
PIN CONFIGURATIONS
NC
5 V output: 0.3% maximum
8
NC
NC
1
3
7
5
Temperature voltage output: 1.96 mV/°C
Adjustment range: 3% minimum
Excellent temperature stability: 8.5 ppm/°C maximum
Low noise: 15 µV p-p maximum
Low supply current: 1.4 mA maximum
Wide input voltage range: 7 V to 40 V
High load-driving capability: 10 mA
No external components
V
2
6
V
OUT
IN
NC
TRIM
4
GROUND
(CASE)
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
Figure 1. 8-Lead TO-99 (J-Suffix)
NC
1
2
3
4
8
7
6
5
NC
NC
Short-circuit proof
REF02
V
IN
TOP VIEW
TEMP
GND
V
OUT
(Not to Scale)
TRIM
GENERAL DESCRIPTION
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
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.
Figure 2. 8-Lead PDIP (P-Suffix), 8-Lead CERDIP (Z-Suffix)
and 8-Lead SOIC (S-Suffix)
3
2
1
20 19
4
5
6
7
8
18
17
16
15
14
NC
NC
NC
NC
V
IN
REF02
NC
TEMP
NC
TOP VIEW
(Not to Scale)
V
OUT
NC
9
10 11 12 13
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
Figure 3. 20-Terminal LCC (RC-Suffix)
OUTPUT RESISTORS
R8
INPUT
2
R7
R14
REF02 OPTION
883C PRODUCT
R9
R11
R12
Q15
18kΩ
2kΩ
6.1kΩ
15kΩ
R15
Q14
Q13
Q8
Q7
Q9
P, S, J, Z PACKAGES 18kΩ
4.5kΩ
Q18
Q12
Q11
Q16
Q19
Q21
C1
R4
Q17
Q10
R6
Q6
Q5
OUTPUT
TRIM
6
5
R13
R3
R12*
R9*
Q4
Q3
R5
≈
1.23V
Q20
R10
Q2
Q1
R1
R11*
3
TEMP
R2
GROUND
*SEE OUTPUT RESISTORS
4
Figure 4. Simplified Schematic
Rev. I
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