H - Electricity – 03 – F
Patent
H - Electricity
03
F
330/22
H03F 3/45 (2006.01) H03F 3/345 (2006.01)
Patent
CA 1064583
Application for Patent of James E. Solomon and Ronald W. Russell for DIFFERENTIAL AMPLIFIER ABSTRACT OF THE DISCLOSURE An operational amplifier includes an input differential stage formed of a differential pair of transistors, a tail current source supplying that differential pair, and a pair of current source loads, each connected to a respective one of the transistors of the differential pair, A common mode feed- back loop is provided from a second stage of the differential amplifier to remove any excess current supplied by the tail current source which is not drawn by the current source loads. A single capacitor is employed for assymetric frequency com- pensation of the second stage, such that the above described common mode feedback can be applied without producing oscil- lations.
245376
Russell Ronald W.
Solomon James E.
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