Digital to analog converter

H - Electricity – 03 – M

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

354/97

H03M 1/00 (2006.01)

Patent

CA 1171967

DIGITAL TO ANALOG CONVERTER ABSTRACT An operational amplifier capable of selectively performing a variety of circuit functions is provided. A single operational amplifier utilizes switched capacitors for sampling and holding an input signal, for establishing a low frequency pole, for applying the sample to an output capacitance to charge the capacitance and for comparing the input signal with a reference. The multi function circuit provides a large savings in circuit area and permits versatility of circuit applications. One embodiment of the invention is to utilize a companding DAC having a capacitor array which may be used as the output capacitance of the operational amplifier circuit. The DAC provided utilizes an R ladder DAC coupled directly to a C DAC and has a switching structure that is simpler than comparable prior art circuits. The DAC is asynchronous and has programmable A- and Mu-255 law PCM conversion capability. Coupled directly to the C DAC is an operational amplifier receive filter circuit which utilizes the C DAC as an input capacitor thereby eliminating the need for a buffer amplifier and allowing the DAC to be used for both analog to digital and digital to analog conversion.

400925

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Digital to analog converter 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, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital to analog converter will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1241169

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.