OPERATIONAL AMPLIFIER Russian patent published in 2006 - IPC H03F3/45 

FIELD: radio and communication engineering.

SUBSTANCE: proposed operational amplifier designed for amplifying broadband and pulse signals in miscellaneous analog interface structures and characterized in maximum output voltage growth to 10 000 - 160 000 V/μs using micron technologies has input differential stage 1 built around transistors 2, 3 with first reference current supply 4; input differential stage 5 built around transistors 6, 7 with second reference current supply 8, main inputs 9, 10 of differential stage 1 being connected to inputs 11, 12 of differential stage 5; intermediate push-pull stage built around intermediate amplifiers 13, 15 whose inverting inputs are connected to collectors of transistors 2, 6, respectively, and their outputs 17, 29 are coupled through ac circuit with input 18 of output stage 19 and also with correcting capacitor 21. Output 22 of ac circuit of output stage 19 is coupled through first and second resistors 25 and 26, respectively, with emitters of transistors 2, 3 and with those of transistors 6, 7.

EFFECT: enhanced maximal speed of output voltage rise.

7 cl, 19 dwg