5 V Precision Voltage

Reference/Temperature Transducer

REF02

Rev. I

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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

1

2

3

4

5

6

7

8

NC

GROUND

(CASE)

NC

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)

REF02

TOP VIEW

(Not to Scale)

NC

NC

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)

4

NC

5

6

NC

7

TEMP

8

NC

18

NC

17

NC

16

NC

15

14

NC

19

20

1

2

3

13

12

11

10

9

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 18k

Ω

4.5k

Ω

15k

Ω

OUTPUT RESISTORS

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

2

TEMP

3

*SEE OUTPUT RESISTORS

883C PRODUCT

18k

Ω

2k

Ω

6.1k

Ω

Figure 4. Simplified Schematic