Sigma-delta converter with improved transfer function

Details Sigma-delta converter with improved transfer function Sigma-delta converter with improved transfer function

1989-09-20

1991-07-02

Fuller, Benjamin R.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341118, H03M 300

Patent

active

050289250

ABSTRACT:
A sigma-delta converter including a switching component controlled by a first clock having determined transitions for generating a train of sigma-delta code pulses corresponding to an analog input value. The sigma-delta includes circuits for generating a second clock of a same frequency as the first clock and having a negative transition followed after a defined period of time (d2) by a positive transition. The determined transitions of the first clock controlling the switching element occur during said defined period of time. There is also included a circuit controlled by the sigma-delta code pulse train and said second clock for generating a train of sigma-delta pulses insensitive to the mismatch of the rise and fall times of the switching element thereby improving the linearity and the signal-to-noise ratio of the converter. The control of the period of time allows varying of the energy of the pulses in order to provide pulse trains which, when applied to a sigma-delta decoder, provide an analog output value representative of, but attenuated with respect to, the analog input value.

REFERENCES:
patent: 3710056 (1973-01-01), Tomozawa
patent: 4009475 (1977-02-01), DeFreitas
patent: 4174502 (1979-11-01), Wilson et al.
patent: 4283786 (1981-08-01), Okamura
patent: 4746899 (1988-05-01), Swanson et al.
patent: 4897856 (1990-01-01), Cukier et al.

Affiliated with

Also associated with

Rating

Sigma-delta converter with improved transfer function does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sigma-delta converter with improved transfer function, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sigma-delta converter with improved transfer function will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1250182