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AMS4040A

Micropower shunt voltage reference

Advanced Monolithic Systems Inc 

Advanced

Monolithic

Systems

AMS4040

MICROPOWER SHUNT VOLTAGE REFERENCE

FEATURES

• Tight Output Voltage Tolerance

• Low Output Noise

• Operating Current 250µA to 100mA

• Low Dynamic Impedance

• Low Temperature Coefficient

• Available in the sub-miniature SOT-23 Package

• 1.2V Device ( AMS4041) also available

APPLICATIONS

• Battery Powered Systems

• Instrumentation

• Energy Management

• Automotive

• Precision Audio Components

• Product Testing

• Data Acquisition Systems

GENERAL DESCRIPTION

The AMS4040 is a two-terminal micropower band-gap voltage reference diode featuring a very low dynamic impedance and

good temperature coefficient, operating over a 250µA to 100mA current range. On-chip trimming is used to provide tight

voltage tolerance. Since the AMS4040 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. The

extremely low power drain of the AMS4040 makes these reference diodes 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 AMS4040 is operational in the full industrial temperature range of -40°C to +85°and is available in small space saving

TO-92, SO-8, SOT-89 and SOT-23 packages.

ORDERING INFORMATION:

TOL.

±0.25%

±0.5%

±1.0%

TO-92

AMS4040AN

AMS4040BN

AMS4040CN

PACKAGE TYPE

8 LEAD SOIC

SOT-89

AMS4040AS

AMS4040BS

AMS4040CS

AMS4040AL

AMS4040BL

AMS4040CL

3 LEAD SOT-23

AMS4040AM

AMS4040BM

AMS4040CM

OPERATING

TEMP. RANGE

-40 to +85° C

-40 to +85° C

-40 to +85° C

PIN CONNECTIONS

TO-92

Plastic Package (N)

N/C + -

321

Bottom View

8L SOIC

SO Package (S)

N/C 1

N/C 2

N/C 3

-4

8+

7 N/C

6 N/C

5 N/C

Top View

SOT-89

(L)

123

Top View

3L SOT-23

(M)

3*

1

2

+

-

*This pin must be left floating

or connected to pin 2

Top View

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140

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