Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Patent
1998-06-24
2000-05-23
Young, Brian
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
341144, H03M 176
Patent
active
060670371
ABSTRACT:
A digital-to-analog converter has a single capacitor array having plural weighted capacitors, a first capacitor connected between an output node of an operational amplifier and an inverted input node of the operational amplifier and a second capacitor both connected to the inverted input node, and a pulse signal, a polarity control signal maintained in one of the high level and the low level over each pulse period of the pulse signal and a multi-bit digital signal are supplied to a controller; the controller causes a switching unit to selectively supply a first reference voltage and a second reference voltage to the weighted capacitors depending upon the logic level of the data bits of the digital signal and, thereafter, a third reference voltage to the weighted capacitors in a certain pulse period, and the switching unit carries out the switching action in the opposite order to the previous pulse period so that the operational amplifier varies an analog output signal with respect to a potential level supplied to the non-inverted input node thereof.
REFERENCES:
patent: 5781139 (1998-07-01), Weisbrod
patent: 5892473 (1999-04-01), Shin
NEC Corporation
Young Brian
LandOfFree
Digital-to-analog converter implemented by simple switched capac does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital-to-analog converter implemented by simple switched capac, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital-to-analog converter implemented by simple switched capac will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1839896