AMS303 datasheet(6/7 Pages) AMS

6 / 7 page

Advanced Monolithic Systems, Inc.

www.advanced-monolithic.com

Phone (925) 443-0722 Fax (925) 443-0723

AMS303

APPLICATION INFORMATION

AMS303 is an open collector with a very low supply

current of typical 7uA. The advantage of this product is

the small space package and simplicity of application. It

operates from as low as +2.7V to +15Vand the output

pull-up resistor could be biased from higher or lower

voltage then Vcc. When a large input signal is applied,

an input resistor should be used to limit the input current

in case of excessive input voltage. If the input voltage is

pulled above the supply voltage Vcc, a set of clamp

diode should be used to protect the input circuit. Since

AMS303 is a high impedance input, PCB layout

precautions should be taken to avoid noise pick-up from

adjacent circuits or electrically noisy environments. A

good practice is to keep the input traces very short and

input components very close to the package. If long

conductors are necessary, shielded or twisted pairs

should be used.

VCC

R pull-up

VIN

RIN

AMS303 Datasheet(PDF) 6 Page - Advanced Monolithic Systems Ltd