REV. C

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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. No license is granted by implication or otherwise

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a

REF01

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

www.analog.com

Fax: 781/326-8703

© Analog Devices, Inc., 2002

10 V Precision

Voltage Reference

SIMPLIFIED SCHEMATIC

C1

R3

R6

R4

R5

R1

Q1

R2

R10

OUTPUT

GROUND

R12

16.7k

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

2k

R9

50k

4

5

6

1.23V

2

FEATURES

10 V Output,

0.3% Max

Adjustment Range,

3% Min

Excellent Temperature Stability, 8.5 ppm/ C Max

Low Noise, 30

V p-p Max

Low Supply Current, 1.4 mA Max

Wide Input Voltage Range, 12 V to 40 V

High Load Driving Capability, 20 mA

No External Components

Short Circuit Proof

GENERAL DESCRIPTION

The REF01 precision voltage reference provides a stable 10 V

output that can be adjusted over a 3% range with minimal effect

on temperature stability. Single-supply operation over an input

voltage range of 12 V to 40 V, a 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

REF01 an excellent choice whenever a stable voltage reference

is required. Applications include D/A and A/D converters,

portable instrumentation, and digital voltmeters. Full military

temperature range devices with screening to MIL-STD-883

are available. For new designs, please refer to ADR01.

Epoxy MINI-DIP (P-Suffix)

8-Lead Hermetic DIP (Z-Suffix)

8-Lead SO (S-Suffix)

8

7

6

5

1

2

3

4

NC = NO CONNECT*

NC

NC

NC

NC

TRIM

GND

TOP VIEW

(Not to Scale)

REF01

TO-99 (J-Suffix)

7

8

1

4

5

6

3

2

NC

TRIM

GROUND

(CASE)

NC

NC

NC

NC = NO CONNECT*

PIN CONFIGURATION

*NC = No Connect. Do not connect anything on these pins as some

of them are reserved for factory testing purposes.