Floating type analog-to-digital converter using delay units to a

Details Floating type analog-to-digital converter using delay units to a Floating type analog-to-digital converter using delay units to a

1998-06-16

2000-08-15

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Nonlinear

341118, H03M 162, H03M 106

Patent

active

06104329&

ABSTRACT:
A floating type analog-to-digital converter which is capable of converting an analog signal into a digital signal in a wide dynamic range, while exhibiting stable frequency characteristics due to the presence of symmetric pre-echo and post-echo in the impulse response waveform. An analog signal level adjusting device adjusts the level of an analog signal with different first gains, so as to generate a plurality of analog signals of different levels for analog-to-digital conversion. A plurality of analog-to-digital converters convert respective ones of the plurality of analog signals generated from the analog signal level adjusting device, into respective digital signals, and output the digital signals. A digital signal level adjusting device adjusts the levels of the digital signals with different second gains corresponding to respective inverses of the first gains, and generates the adjusted digital signals, which are then delayed and generated by a delay device. A switching device selects one of the digital signals generated from the delay device, based on the level of one digital signal selected from the digital signals generated from the plurality of analog-to-digital converters, and generates the selected one digital signal.

REFERENCES:
patent: 5241310 (1993-08-01), Tiemann
patent: 5561660 (1996-10-01), Kotowski et al.
patent: 5896101 (1999-04-01), Melanson

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