AMS385-1.2

Advanced Monolithic Systems FEATURES ±4 mV (±0.3%) max. initial tolerance (A grade) Operating Current 10µA to 20mA Low Voltage Reference 1.235 Max. 0.6Ω Dynamic Impedance (A grade) Low Temperature Coefficient 2.5V Device and Adjustable Device also available AMS285-2.5 and AMS285 series, respectively AMS385-2.5 and AMS385 series. AMS285-1.2/AMS385-1.2 MICROPOWER VOLTAGE REFERENCE DIODE RoHS compliant APPLICATIONS Battery Powered Systems Instrumentation A/D, D/A Converters Temperature measurement Current sources Notebook/Personal Computer Monitors/ VCR/ TV Pagers GENERAL DESCRIPTION The AMS285-1.2/AMS385-1.2 are two-terminal micropower band-gap voltage reference diodes. They feature 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 AMS285-1.2/AMS385-1.2 is a band-gap reference, uses only transistors and resistors, low noise and good long-term stability result. Careful design of the AMS285-1.2/AMS385-1.2 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 AMS285-1.2/AMS385-1.2 makes these reference diodes useful for micropower circuitry. These voltage references can be used to make portable meters, regulators or ...