OPERATIONAL AMPLIFIER Russian patent published in 2005 - IPC

FIELD: radio and communications engineering.

SUBSTANCE: proposed operational amplifier designed for amplifying broadband signals, including pulsed ones, in analog interface structures of various functional applications has input stage 1 made in the form of differential amplifiers whose output current is unlimited at input voltage fluctuations up to several volts; p-n-p transistors 8, 9; and n-p-n transistors 10, 11. Emitters of transistors 8 through 11 are connected to respective antiphase current outputs of stage 1; collectors of transistors 9, 11 are integrated and coupled with correcting capacitor 16 and with output buffer amplifier 17. Current followers 19, 18 are introduced between collectors of transistors 8, 9 and collectors of transistors 10, 11. Use of micron technologies with layout standards of 1.5 to 2 μm provides for speed growth at level of 4000 - 6000 V/μs.

EFFECT: enhanced speed.

8 cl, 11 dwg