Advanced
Monolithic
Systems
FEATURES
•
±4
mV (±0.3%) max. initial tolerance (A grade)
•
Operating Current 10µA to 20mA
µ
•
Low Voltage Reference 1.235V
•
Max. 0.6Ω Dynamic Impedance (A grade)
Ω
•
Low Temperature Coefficient
•
2.5V Device also available, AMS1004-2.5
AMS1004-1.2
MICROPOWER VOLTAGE REFERENCE
APPLICATIONS
•
Battery Powered Systems
•
Instrumentation
•
A/D, D/A Converters
•
Temperature measurement
•
Current sources
•
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.
TO-92
±4mV
AMS1004-1.2AN
±15mV
AMS1004-1.2BN
PACKAGE TYPE
8 LEAD SOIC
AMS1004-1.2AS
AMS1004-1.2BS
SOT-89
AMS1004-1.2AL
AMS1004-1.2BL
OPERATING
TEMPERATURE RANGE
0 to 70° C
0 to 70° C
Advanced Monolithic Systems, Inc.
6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140
ADMOS [ ADVANCED MONOLITHIC SYSTEMS ]
