3528AM

The 3528AM is designed as ultra low bias current FET operational amplifier. An excellent combination of specifications for applications requiring ultra low input bias currents are provided by the 3528 amplifier family. These applications include photometers, long term integrators and low droop sample hold circuits. It is unique in that in addition to providing bias currents as low as 75fA. 3528AM also provides very low offset drift and offset voltage. Thus user triming offset voltage with an external potentiometer is usually avoided.

3528AM has four features. (1)75fA max input bias current. (2)250uV max offset voltage. (3)5uV/°C max offset voltage drift. (4)typical applications include photodiode amplifier, photomultiplier tube amplifier, low drift integrator, current-to-voltage converter. Those are all the main features.

Some important electrical specifications of 3528AM have been concluded into several points as follow. (1)Its open loop gain DC would be min 88dB and typ 93dB at RL>=2K and would be min 94dB and typ 114dB at RL>=10K. (2)Its rated output voltage would be min +/-10V and typ +/-12V at RL=2Kohms and would be min +/-12V and typ +/-13V at RL=10Kohms. (3)Its rated output current would be min +/-5mA and typ +/-10mA. (4)Its output resistance open loop would be typ 1.5kohms and max 3kohms. (5)Its short circuit current would be typ 19mA. (6)Its dynamic response bandwidth unity gain would be typ 0.7MHz. (7)Its full power bandwidth would be min 5kHz and typ 11kHz. (8)Its slew rate would be min 0.3V/sec and would be typ 0.7V/sec. (9)Its setting time would be min 30us to 1% and wouldbe min 150us to 0.1% and would be min 1ms to 0.01%. (10)Its input offset voltage initial offset would be typ +/-200uV and max +/-500uV. (11)Its input bias current initial would be max -300fA. (12)Its input difference current initial would be typ +/-80fA. (13)Its input impedance differential would be typ 10^13||0.8 ohms||pF. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!