LM185-1.2/

LM285-1.2/LM385-1.2

1

FEATURES

DESCRIPTIO

APPLICATIO S

TYPICAL APPLICATIO

s

Portable Meter References

s

Portable Test Instruments

s

Battery Operated Systems

s

Current Loop Instrumentation

s

10

µA to 20mA Operating Range

s

Guaranteed 1% Initial Voltage Tolerance

s

Guaranteed 1

Ω Dynamic Impedance

s

Very Low Power Consumption

Micropower Voltage

Reference

Reverse Voltage Change with Current

The LM185-1.2 is a two terminal band gap reference diode

that has been designed for applications which require

precision performance with micropower operation. The

device provides guaranteed operating specifications at

currents as low as 10

µA. The nominal voltage is 1.235V

with both 1% and 2% tolerances available. Some addi-

tional features are: maximum dynamic impedance of 1

Ω,

low noise and excellent stability over time and tempera-

ture. Advanced design, processing and testing techniques

make Linear’s LM185-1.2 a superior choice over previous

designs. A micropower 5V reference application is shown

below. For guaranteed TC, micropower references, see the

LT1034 data sheet.

, LTC and LT are registered trademarks of Linear Technology Corporation.

Micropower 5V Reference

–

+

185/285/385 TA01a

LM385-1.2

LM334

LT1494

3

2

7

6

4

R

5.6k

150pF

3.01M

1%

1M

1%

7V TO 15V

5V

REVERSE CURRENT (mA)

10

8

6

4

2

0

–2

0.01

1

10

100

185/285/385 TA01b

0.1