CA3493

The CA3493 is designed as one kind of ultra-stable, precision-instrumentation, optional amplifiers that employ both PMOS and bipolar transistors on a single monolithic chip. It is internally phase-compensated and provides a gain-bandwidth product of 1.2MHz. It is pin-compatible with many industrial types such as 725, 108A, OP-5, LM11 and LM714 where positive nulling is employed.

CA3493 has five features. (1)Low Vio which would be max 500uV. (2)Low Vio/T which would be max 5uV/°C. (3)Low Iio and Ii. (4)Low Iio/T which would be max 150pA/°C. (5)Low Ii/T which would be max 3.7nA/°C. Those are all the main features.

CA3493 absolute maximum ratings have been concluded into several points as follow. (1)Its DC supply voltage would be +/-18V. (2)CA3493 differential mode input voltage would be +/-5V. (3)Its common mode DC input voltage would be (V+ -4) to V-. (4)Its input terminal current would be 1mA. (5)Its device dissipation would be 630mW up to 55°C and it would be derate linearly 6.67mW/°C above 55°C. (6)Its temperature range would be from -25°C to 85°C. (7)Its output short circuit duration would be indefinite. (8)Its lead temperature (during soldering) for 10 seconds would be +/-265°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics are concluded as follow. (1)CA3493 input offset voltage would be typ 300uV and max 500uV. (2)Its Vio at max temperature would be max 725uV. (3)Its input offset voltage temperature coefficient would be typ 1uV/°C and max 5uV/°C. (4)Its input offset current would be typ 5nA and max 10nA. (5)Its Iio at max temperature would be max 17nA. (6)Its input offset current temperature coefficient would be typ 0.04nA/°C and max 0.15nA/°C. (7)CA3493 input bias current would be typ 20nA and max 40nA. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!