CASCODE AMPLIFIER Russian patent published in 2008 - IPC H03F3/45 

FIELD: physics, radio.

SUBSTANCE: invention concerns radio and communication technology and can be applied as analog signal amplifier, in analog microcircuit structure of various functional purpose (e.g., operation amplifiers (OA)). Cascode amplifier (CA) includes first input transistor (T) (1) with its emitter connected to first CA input (2) and first auxiliary resistor (R) (3), first loading impedor (4) connected to collector of T (1) and first CA output (5), second auxiliary T (6) with its emitter connected to second auxiliary R (7), its base connected to T (1) base, and its collector connected to second loading impedor (8). Additional differential cascade (9) is introduced into the circuit, with its non-inverting input connected to T (6) connector and second loading impedor (8), its inverting input connected to CA output 5, and its output connected to T (1) and T (6) bases.

EFFECT: increased marginal voltage amplification factor.

5 cl, 18 dwg