ULTRA-HIGH-SPEED PARALLEL ANALOGUE-TO-DIGITAL CONVERTER WITH DIFFERENTIAL INPUT Russian patent published in 2014 - IPC H03M1/36 

FIELD: radio engineering, communication.

SUBSTANCE: ultra-high-speed parallel analogue-to-digital converter with a differential input has N sections of identical architecture. Each of the sections includes a voltage comparator (1), the first (2) input of which is connected to a first (3) input voltage source through a first (4) reference resistor, and the second (5) input of the voltage comparator (1) is connected to a second (6) input anti-phase voltage source through a second (7) reference resistor. The first (2) input of the voltage comparator (1) is connected to a first (8) reference current source and a first (9) parasitic capacitor, the second (5) input of the voltage comparator (1) is connected to a second (10) reference current source and a second (11) parasitic capacitor. The first (3) input voltage source is connected to the base of a first (12) additional transistor, the collector of which is connected to the bus of a first (13) power supply, and the emitter is connected to the bus of a second (14) power supply through a first (15) current-stabilising two-terminal device and through a first (16) balancing capacitor to the first (2) input of the voltage comparator (1).

EFFECT: multifold expansion of the frequency range of processed signals of an analogue-to-digital converter by reducing the transmission error of input differential voltages to voltage comparator inputs.

2 cl, 8 dwg