Advanced Monolithic Systems, Inc.

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

Advanced

AMS1004-1.2

Monolithic

MICROPOWER VOLTAGE REFERENCE

Systems

FEATURES

APPLICATIONS

•• ±4 mV (±0.3%) max. initial tolerance (A grade)

•• Battery Powered Systems

•• Operating Current 10µµA to 20mA

•• Instrumentation

•• Low Voltage Reference 1.235V

•• A/D, D/A Converters

•• Max. 0.6Ω

Ω Dynamic Impedance (A grade)

•• Temperature measurement

•• Low Temperature Coefficient

•• Current sources

•• 2.5V Device also available, AMS1004-2.5

•• Notebook/Personal Computer

•• Monitors/ VCR/ TV

•• Pagers

GENERAL DESCRIPTION

The AMS1004-1.2 is a two-terminal micropower band-gap voltage reference diode. It features a very low dynamic impedance

and good temperature coefficient, operating over a 10µA to 20mA current range. On-chip trimming is used to provide tight

voltage tolerance. Since the AMS1004-1.2 is a band-gap reference, uses only transistors and resistors, low noise and good

long term stability result. Careful design of the AMS1004-1.2 has made the device exceptionally tolerant of capacitive

loading, making it easy to use in almost any reference application. The wide dynamic operating range allows its use with

widely varying supplies with excellent regulation. The extremely low power drain of the AMS1004-1.2 makes these reference

diodes useful for micropower circuitry. This voltage reference can be used to make portable meters, regulators or general

purpose analog circuitry with battery life approaching shelf life.

Further more, the wide operating current allows it to replace older references with a tight tolerance part, making it attractive

for use in systems where accuracy was previously obtained at the expense of power consumption and trimming.

The AMS1004-1.2 is operational over a temperature range of 0

°C to 70°C and is available in TO-92, SO-8 and SOT-89

packages. For extended temperature range contact factory.

ORDERING INFORMATION:

TOL.

PACKAGE TYPE

OPERATING

TO-92

8 LEAD SOIC

SOT-89

TEMPERATURE RANGE

±

4mV

AMS1004-1.2AN

AMS1004-1.2AS

AMS1004-1.2AL

0 to 70

° C

±

15mV AMS1004-1.2BN

AMS1004-1.2BS

AMS1004-1.2BL

0 to 70

° C