High-voltage op amp joins ASIC process

Edited by the Electronicstalk editorial team Apr 22, 2005

For use in custom specific ICs, Prema Semiconductor has designed a new high voltage operational amplifier for supply voltages of up to +/-60V or up to 120V single supply.

For use in custom specific ICs, Prema Semiconductor has designed the new high voltage operational amplifier OP601VHV for supply voltages of up to +/-60V or up to 120V single supply.

The common mode input voltage covers nearly the complete supply voltage range with a very good common mode and power supply rejection ratio of more than 110dB.

The output voltage can approximate the positive or negative supply voltage as close as 1V.

The temperature increase of the component remains small in spite of the high voltages due to the low quiescent current of only 180uA.

Fast control circuits may be designed with this OP601VHV due to the gain bandwidth product of up to 3.5MHz and a slew rate of nearly 4V/us.

The new high voltage operational amplifier OP601VHV has been developed and produced with the enhanced semiconductor process Modus U6 by the ASIC specialist Prema Semiconductor.

The OP601VHV can be used for example in a motor control circuit with current sensing using a shunt resistor at high potential.

The wide common mode input range allows high impedance measurements of small differential voltages at high potentials, for example in Wheatstone bridges.

Devices using higher voltages can be driven directly by the ASIC.

For the design of high voltage ASICs, Prema offers linear regulators, step-down convertors and several output drivers.

Several externally connected components can be saved because high voltage transistors and resistors can be integrated now into the ASIC.