DIFFERENTIAL AMPLIFIER Russian patent published in 2005 - IPC

FIELD: radio and communications engineering; miscellaneous microelectronic amplifying devices.

SUBSTANCE: proposed differential amplifier has first and second parallel-balanced stages 1, 2 whose inputs are connected in parallel with transistors 1.1, 1.2 of first stage 1 whose polarity of conductivity is other than that of transistors 2.1, 2.2 of second stage 2; emitters of transistors 1.1, 1.2 are coupled with base of first additional transistor 5 whose emitter is connected through first auxiliary resistor 6 to integrated emitters of transistors 2.1, 2.2; integrated emitters of transistors 2.1, 2.2 are connected to base of second additional transistor 7 whose emitter is connected through auxiliary resistor 8 to integrated emitters of transistors 1.1, 1.2.

EFFECT: enlarged effective operating range; enhanced maximal rate of rise of output voltage.

2 cl, 15 dwg