LM2851.2, LM3851.2, LM385B1.2

MICROPOWER VOLTAGE REFERENCES

SLVS075H − APRIL 1989 − REVISED FEBRUARY 2005

2

POST OFFICE BOX 655303

description/ordering information (continued)

The design makes these devices exceptionally tolerant of capacitive loading and, thus, easier to use in most

reference applications. The wide dynamic operating temperature range accommodates varying current

supplies, with excellent regulation.

The extremely low power drain of this series makes them useful for micropower circuitry. These voltage

references can be used to make portable meters, regulators, or general-purpose analog circuitry, with battery

life approaching shelf life. The wide operating current range allows them to replace older references with

tighter-tolerance parts.

symbol

ANODE

CATHODE

schematic

CATHODE

Q13

Q12

Q7

Q4

600 k

Ω

7.5 k

Ω

ANODE

200 k

Ω

50 k

Ω

300 k

Ω

Q14

20 pF

20 pF

Q11

Q10

Q9

Q5

Q3

Q1

Q2

Q8

Q6

60 k

Ω

500

Ω

100 k

Ω

NOTE A: Component values shown are nominal.