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_______________General Description

The MAX6120 is the lowest-power 1.2V, precision,

three-terminal voltage reference offered in a SOT23

package. Ideal for 3V battery-powered equipment

where power conservation is critical, the MAX6120 is a

low-power alternative to existing two-terminal shunt ref-

erences. Unlike two-terminal references that throw

away battery current and require an external series

resistor, the MAX6120 has a 70µA maximum supply

current (typically only 50µA) that is independent of the

input voltage. This feature translates to maximum effi-

ciency at all battery voltages.

The MAX6120 operates from a supply voltage as low as

2.4V, and initial accuracy is ±1% for the SOT23 pack-

age. Output voltage temperature coefficient is typically

only 30ppm/°C, and is guaranteed to be less than

100ppm/°C in the SOT23 package. For a guaranteed

output voltage temperature coefficient of less than

50ppm/°C, see the MAX6520 data sheet.

________________________Applications

Battery-Powered Systems

Portable and Hand-Held Equipment

Data-Acquisition Systems

Instrumentation and Process Control

____________________________Features

o 3-Pin SOT23 Package

o Supply Current Independent of Input Voltage

Over Temperature

o 50µA Supply Current

o 2.4V to 11V Input Voltage Range

o 30ppm/°C Typical Tempco (SOT23)

o ±1% Initial Accuracy (SOT23)

Low-Cost, Micropower, Precision, 3-Terminal,

1.2V Voltage Reference

________________________________________________________________

Maxim Integrated Products

1

1

2

3

4

8

7

6

5

N.C.

N.C.

N.C.

GND

N.C.

N.C.

MAX6120

SO

TOP VIEW

1

2

3 GND

MAX6120

SOT23

_________________Pin Configurations

______________Ordering Information

GND

V+

2.4V to 11V

0V

0.1

µF

1.2V

MAX6120

__________Typical Operating Circuit

PART

MAX6120ESA

MAX6120EUR

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-PACKAGE

8 SO

3 SOT23-3

19-0458; Rev 1; 9/96