MULTIDIFFERENTIAL AMPLIFER Russian patent published in 2009 - IPC H03F3/45 

FIELD: radio engineering.

SUBSTANCE: multidifferential amplifier (MDA) contains first (1) and second (2) inputs concerted to bus (3) of positive supply source (SS), third (4) and forth (5) inputs concerted to bus (6) of negative supply source, first (7) and second (8) access transistors with joined bases which emitters are connected to corresponding first (1) and second (2) inputs, third (9) and fourth (10) access transistors with joined bases which emitters are connected to corresponding third (4) and fourth (5) inputs, at that collector of second (8) and fourth (10) access transistors are joined and connected to output circuit (11) of multidifferential amplifier. Additional first (12) and second (13) transistors are included in scheme, their bases are connected to circuit of setting of static potential (14), collector of first (12) additional transistor is connected to joined bases of first (7) and second (8) access transistors, collector of second (13) additional transistor is connected to joined bases of third (9) and fourth (10) access transistors, emitter of first (12) additional transistor is connected to collector of third (9) access transistor and by means of additional resistor (15) is connected to emitter of second (13) additional transistor and collector of first (7) access transistor.

EFFECT: reduction of current consumption and improvement of balance.

6 cl, 17 dwg