High frequency high resolution quantizer

Details High frequency high resolution quantizer High frequency high resolution quantizer

1994-05-11

1995-10-03

Young, Brian K.

Coded data generation or conversion

Quantizer

H03M 112

Patent

active

054555841

ABSTRACT:
A quantizer (20) includes a series of folding amplifiers (22) coupled by a binary weighted resistor ladder (44, 46, 48, 50). Each folding amplifier (22) includes resonant tunneling diodes (34, 36, 38, 40) to control switching of a transistor (32). The output of the folding amplifier (22), as determined by the switching state of the transistor (32), is compared to a reference voltage (V.sub.REF) by a comparator (42). The comparator (42) determines the correct output state of the folding amplifier (22) and generates a digital output signal (V.sub.01) representing a bit of the digital output. The binary weighted resistor ladder successively reduces the input swing received by each folding amplifier to provide fewer and fewer switching transitions at each successive folding amplifier to create the more significant bits of the digital output.

REFERENCES:
patent: 5247298 (1993-09-01), Wei et al.

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