| 摘要 |
FIELD: radio engineering; microelectronic devices for analog signal amplification and conversion. ^ SUBSTANCE: proposed differential amplifier has first and second input transistors 1 and 2 whose bases are connected to differential amplifier inputs 3 and 4; emitter of first transistor 1 is coupled with inverting potential input 1 of current mirror 5; emitter of second transistor 2 is coupled with noninverting potential input 6 of current mirror 5, current input 7 of the latter being connected to reference-current supply 8. Novelty is that collector of first transistor 1 and main current output 9 of current mirror 5 are connected to common-mode inputs 10, 11 of current adder 12 whose output 13 functions as differential amplifier output. In particular case current adder 12 can be built around current mirrors 14, 15. ^ EFFECT: enhanced common-mode signal attenuation constant. ^ 3 cl, 10 dwg |
