Advanced Monolithic Systems, Inc.

6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

Advanced

AMS255

Monolithic

MICROPOWER SHUNT VOLTAGE REFERENCE

Systems

FEATURES

APPLICATIONS

•• Low Temperature Coefficient

•• Battery Powered Systems

•• Low Output Noise

•• Instrumentation

•• Operating Current 100µµA to 5mA

•• Energy Management

•• Low Dynamic Impedance

•• Automotive

•• Tight Output Voltage Tolerance

•• Precision Audio Components

•• Available in the sub-miniature SOT-23 Package

•• Data Acquisition Systems

GENERAL DESCRIPTION

The AMS255 is a two-terminal band-gap voltage reference diode featuring low dynamic impedance and good temperature

coefficient, operating over a 100µA to 5mA current range. On-chip trimming is used to provide tight voltage tolerance. Since

the AMS255 band-gap reference uses only transistors and resistors, low noise and good long term stability result. The wide

dynamic operating range allows its use with widely varying supplies with excellent regulation. These voltage references can

be used to make portable meters, regulators or general purpose analog circuitry.

The AMS255 is operational in the full industrial temperature range of -40

°C to +85°C and is available in small space saving

SOT-23 package.

MAX.

PACKAGE TYPE

OPERATING

TEMPCO

3 LEAD SOT-23

TEMP. RANGE

50ppm/

°C

AMS255AM

-40 to +85

°C

100ppm/

°C AMS255BM

-40 to +85

°C

PIN CONNECTIONS

3L SOT-23

(M)

+

-

3 *

2

1

*This pin must be left floating

or connected to pin 2

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