BUFFER AMPLIFIER WITH LOW ZERO-SHIFT VOLTAGE Russian patent published in 2010 - IPC H03F3/26 H03F3/50 

FIELD: radio engineering.

SUBSTANCE: invention can be used as buffer amplifier incorporated with various-purpose analog microcircuits (for example, precision transponders, communication line drivers, etc.). Buffer amplifier (BA) comprises first (1) and second (2) input transistors (T) with their bases connected to BA input (3), first (4) and second(5) output with their emitters connected to BA output (6), first (7) current-stabilising bipolar transistor (BT) connected to the base of first (4) output transistor, second (8) BT connected to the base of second (5) output transistor T. Emitter of first (1) input transistor is connected with the base of first (4) of output transistor via first (9) potential shift circuit and is connected to first (10) additional BT. Emitter of second (2) input transistor is connected with the base of second (5) output transistor via second (11) potential shift circuit and is connected to second (12) additional BT.

EFFECT: lower zero-shift voltage and temperature and/or radiation dependence.

4 cl, 9 dwg