FAST-ACTING ATTENUATOR FOR INPUT CIRCUITS OF ANALOGUE-TO-DIGITAL INTERFACES Russian patent published in 2014 - IPC H03H11/24 

FIELD: electricity.

SUBSTANCE: fast-acting attenuator for input circuits of analogue-to-digital interfaces comprises an input (1) and output (2) with the first (3) resistor coupled between them, the second (4) resistor coupled between output of the device (2) and common bus (5) for input and output signals, the first (6) capacitor in the load circuit. In the circuit there is the first (7) auxiliary transistor which base is connected to the device input (1) and collector is connected to the first (8) bus of the power supply unit while its emitter is connected to the second (9) bus of the power supply unit through the first (10) current-stabilizing two-terminal element and coupled to the device output (2) through the first (11) balancing capacitor.

EFFECT: expanding the operating frequency band for the device and improving its operating speed while operating with pulse signals of high amplitude.

2 cl, 9 dwg