DESCRIPTION

KEY FEA TURES

s

s

s

s

s GUARANTEED 1% INITIAL ACCURACY

(LM385B-1.2)

s

s

s

s

s GUARANTEED 2.5% INITIAL ACCURACY

(LM385-1.2)

s

s

s

s

s GUARANTEED 1.5% INITIAL ACCURACY

(LM385B-2.5)

s

s

s

s

s GUARANTEED 3% INITIAL ACCURACY

(LM385-2.5)

p GUARANTEED 20µA OPERATING CURRENT

p LOW TEMPERATURE COEFFICIENT

p OPERATING CURRENT OF 20µA TO 20mA

p VERY LOW DYNAMIC IMPEDANCE . . . 1Ω

The LM385/385B Micropower Voltage

References are two terminal bandgap

reference diodes designed and optimized

for accurate low power operation in

portable and other power sensitive

systems.

Operating currents are

guaranteed from as low as 15µA up to

20mA for the LM385/385B-1.2, and 20µA

up to 20mA for the LM385/385B-2.5,

giving designers a great deal of flexibility

in optimizing power consumption, noise

and ultimate application performance. As

an added feature, the references output

impedance is extraordinarily low over the

entire operating range of quiescent

currents. This enables an extremely wide

dynamic load range with little effect on

the overall reference accuracy.

The LM385 family is available in fixed

1.2V and 2.5V reference values. Process

and circuit design optimization provide

for high accuracy with initial tolerance

values of 1% for the LM385B-1.2, 2% for

the LM385-1.2, 1.5% for the LM385B-2.5,

and

3%

for

the

LM385-2.5.

Complementing their initial accuracy, the

bandgap reference is temperature

compensated

to

deliver

20ppm

performance over the 0° to 70°C

operating temperature range.

The LM385 family from Linfinity is a

pin-for-pin replacement for the LM385/

385B family of voltage references.

P ACKAGE ORDER INFORMA TION

T

1.2V

±30mV

LM385DM-1.2

LM385LP-1.2

0 to 70

±12mV

LM385BDM-1.2

LM385BLP-1.2

2.5V

±75mV

LM385DM-2.5

LM385LP-2.5

±38mV

LM385BDM-2.5

LM385BLP-2.5

Reference

Voltage

DM

Plastic TO-92

3-pin

LP

Plastic SOIC

8-pin

Initial

Tolerance

APPLICA TIONS

s

s

s

s

s PORTABLE METER REFERENCES

p PORTABLE TEST INSTRUMENTS

p BATTERY OPERATED SYSTEMS

p CURRENT LOOP INSTRUMENTATION

PRODUCT HIGHLIGHT

1.2V

LM385-1.2V

5V

38k

2.5V

LM385-2.5V

9V

200k

OF

Copyright © 1996

Rev. 1.2

7/96

FOR FUR THER INFORMA TION CALL (714) 898-8121

LM385/385B

1

Note: All surface-mount packages are available in Tape & Reel.

Append the letter "T" to part number. (i.e. LM385DM-2.5T)