5 V Precision Voltage
Reference/Temperature Transducer
REF02
FEATURES
5 V output: 鹵0.3% maximum
Temperature voltage output: 1.96 mV/擄C
Adjustment range: 鹵3% minimum
Excellent temperature stability: 8.5 ppm/擄C maximum
Low noise: 15 碌V 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
PIN CONFIGURATIONS
NC
8
NC
1
V
IN 2
NC
3
4
7
NC
6
V
OUT
5
TRIM
GROUND
(CASE)
NC = NO CONNECT. DO NOT CONNECT ANYTHING
ON THESE PINS. SOME OF THEM ARE RESERVED
FOR FACTORY TESTING PURPOSES.
00375-F-001
Figure 1. 8-Lead TO-99 (J-Suffix)
NC
1
8
NC
NC
V
OUT
TRIM
00375-F-002
V
IN 2
REF02
TOP VIEW
(Not to Scale)
7
TEMP
3
6
GENERAL DESCRIPTION
The REF02 precision voltage reference provides a stable 5 V
output that can be adjusted over a 鹵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.
GND
4
5
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
NC
NC
1
NC
3
2
20 19
NC
4
V
IN 5
NC
6
TEMP
7
NC
8
9
10 11 12 13
NC
18
NC
NC
NC
V
OUT
NC
REF02
TOP VIEW
(Not to Scale)
17
16
15
14
GND
NC
NC
TRIM
NC
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
883C PRODUCT
R9
18k鈩?/div>
R11
2k鈩?/div>
4.5k鈩?/div>
R12
6.1k鈩?/div>
15k鈩?/div>
Q8
Q7
Q14
Q13
R8
R7
R14
Q15
R15
2
INPUT
P, S, J, Z PACKAGES 18k鈩?/div>
Q9
Q12
Q11
C1
R6
R3
R4
Q4
R5
Q1
3 R1
TEMP
R2
Q2
Q20
Q3
Q10
Q6
Q5
R13
Q17
Q21
Q18
Q16
Q19
OUTPUT
6
R12*
R9*
鈮?/div>
1.23V
R11*
TRIM
5
GROUND
*SEE OUTPUT RESISTORS
4
Figure 4. Simplified Schematic
Rev. I
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
漏 2005 Analog Devices, Inc. All rights reserved.
00375-F-004
R10
00375-F-003
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