DIFFERENTIAL AMPLIFIER WITH ENHANCED VOLTAGE AMPLIFICATION FACTOR Russian patent published in 2008 - IPC H03F3/45 

FIELD: physics, radio.

SUBSTANCE: invention concerns radio technology and communication and can be applied as analog signal amplifier in analog microcircuit structures of various purpose (e.g., in operational amplifiers (OA), comparators). Differential amplifier (DA) includes first (1) and second (2) input transistors (T), current mirror (3) with its input connected to T (1) collector and its output connected to T (2) collector and first output T (4) base, static mode circuit (5) with its first (6) and second (7) outputs connected to T (1, 2) emitters, and featuring non-inverting input (8) against first output (6). Additional output T (9) is introduced to the circuit, with its emitter connected to T (4) collector, its base connected to non-inverting input (8) of static mode circuit (5), and its collector functioning as DA current output (10).

EFFECT: enhanced voltage amplification factor.

3 cl, 7 dwg