A Novel Active Phase Compensated Inverting Amplifier

A new active phase compensation method for inverting amplifiers is given. The proposed circuit uses 2 op-amps and 4 resistors. Three special cases are discussed and the results are summarized in a table. It is shown that to minimize the phase and the magnitude errors and to provide for a maximum bandwidth only a single additional op-amp is necessary for the phase compensation of an inverting weighted summer. This new proposed wide bandwidth inverting weighted summer is considered to be the most economical phase compensated weighted summer available up to date.