Circuit and method for converting digital signal into correspond

Details Circuit and method for converting digital signal into correspond Circuit and method for converting digital signal into correspond

1988-12-20

1990-11-27

Shoop, Jr., William M.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

341145, H03M 178, H03M 168

Patent

active

049739794

ABSTRACT:
A circuit and method for converting a digital input into an analog quantity are disclosed in which a resistance ladder having a 2.sup.n/2 number of resistors corresponding to n-bit number of bits of the digital input for equally dividing a predetermined voltage to generate the analog quantities, a first decode/switch circuit for retrieving from the resistance ladder a first analog quantity corresponding to a digital quantity which is larger by 1 than upper digits of the digital input, a second decode/switch circuit for retrieving from the resistance ladder a second analog quantity corresponding to a digital quantity of a two's complement of lower digits of the digital input and a differential amplification circuit, responsive to the first and second analog quantities, for shifting down the second analog quantity by a digit number corresponding to the lower digits, subtracting the shifted down second analog quantity from the first analog quantity, and outputting an analog quantity corresponding to the digital input are provided so that the digital-to-analog converting circuit, the construction of which is described above, can easily be assembled on a semiconductor substrate with the number of parts of the digital-to-analog converting circuit reduced.

REFERENCES:
patent: 4430642 (1984-02-01), Weigand et al.
patent: 4533903 (1985-08-01), Yamada et al.
patent: 4612531 (1986-09-01), Dingwall et al.
patent: 4616212 (1986-10-01), Law et al.
patent: 4635036 (1987-01-01), Yoshizawa
patent: 4638303 (1987-01-01), Masuda et al.

Affiliated with

Also associated with

Rating

Circuit and method for converting digital signal into correspond does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit and method for converting digital signal into correspond, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit and method for converting digital signal into correspond will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1034638