REF02_05 Datasheet, PDF (1/16 Pages) Analog Devices – 5 V Precision Voltage Reference/Temperature Transducer

5 V Precision Voltage
Reference/Temperature Transducer
REF02
FEATURES
5 V output: ±0.3% maximum
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
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.
PIN CONFIGURATIONS
NC
8
NC 1
7 NC
V_IN 2
6 V_OUT
NC 3
5 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
8 NC
V_IN 2 REF02 7 NC
TEMP
3
TOP VIEW
(Not to Scale)
6 V_OUT
GND 4
5 TRIM
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 4
V_IN 5
NC 6
TEMP 7
NC 8
3 2 1 20 19
REF02
TOP VIEW
(Not to Scale)
18 NC
17 NC
16 NC
15 V_OUT
14 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
REF02 OPTION
R9
R11
883C PRODUCT
18kΩ 2kΩ
P, S, J, Z PACKAGES 18kΩ 4.5kΩ
R12
6.1kΩ
15kΩ
R8
Q8
R7
R14
Q15
Q7 Q14
Q13
INPUT
2
R15
Q9
Q12
C1
R6
Q6 Q5
Q11
Q10
Q21
Q17
R13
R3
R4
R5
Q1
Q4
Q2
Q3
Q20
≈1.23V
3 ^R1
TEMP
R10
R2
*SEE OUTPUT RESISTORS
Figure 4. Simplified Schematic
Q18
Q16
Q19
OUTPUT
6
R12*
R9*
TRIM
5
R11*
GROUND
4
Rev. I
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