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5 V Precision Voltage
Reference/Temperature Transducer
REF02
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 © 2005 Analog Devices, Inc. All rights reserved.
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
00375-F-001
1
2
3
4
5
6
7
8
NC
GROUND
(CASE)
NC
V
IN
V
OUT
NC
NC TRIM
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)
00375-F-002
REF02
TOP VIEW
(Not to Scale)
NC
1
V
IN
2
TEMP
3
GND
4
NC
NC
V
OUT
TRIM
8
7
6
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)
00375-F-003
4
NC
5
V
IN
6
NC
7
TEMP
8
NC
18
NC
17
NC
16
NC
15
V
OUT
14
NC
19
NC
20
NC
1
NC
2
NC
3
NC
13
NC
12
TRIM
11
NC
10
GND
9
NC
REF02
TOP VIEW
(Not to Scale)
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)
REF02 OPTION R9 R11 R12
P, S, J, Z PACKAGES 18kΩ 4.5kΩ 15kΩ
OUTPUT RESISTORS
00375-F-004
C1
R3
R6
R4
R5
R1
Q1
R2
R10
OUTPUT
GROUND
R12*
TRIM
Q19
R15
INPUT
Q15
Q18
Q16
Q13
Q21
Q17
R13
Q20
Q4
Q3
Q5
Q6
Q9
Q7
Q14
Q12
Q11
Q8
R8
R7
R14
Q10
Q2
R11*
R9*
4
5
6
≈
1.23V
2
TEMP
3
*SEE OUTPUT RESISTORS
883C PRODUCT 18kΩ 2kΩ 6.1kΩ
Figure 4. Simplified Schematic
Verzeichnis
- ・ Konfiguration des Pinbelegungsdiagramms on Seite 1
- ・ Abmessungen des Paketumrisses on Seite 13
- ・ Teilenummerierungssystem on Seite 15
- ・ Blockdiagramm on Seite 1
- ・ Beschreibung der Funktionen on Seite 1
- ・ Technische Daten on Seite 1 Seite 3 Seite 7
- ・ Anwendungsbereich on Seite 1
- ・ Elektrische Spezifikation on Seite 3 Seite 8
