The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 1981
Filed:
Jun. 28, 1979
Applicant:
Inventor:
John J Price, Jr, Mesa, AZ (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307362 ; 307542 ; 330252 ;
Abstract
A bit switch for use in a digital-to-analog converter comprises three differential pairs of transistors. The first pair receives a digital input signal and a reference voltage signal. The second pair switches the bit current to either an output bus or to ground depending upon the state of the input signal. A third differential pair of transistors is coupled between the first and second pairs for minimizing adverse effects of fast input transitions and parasitic capacitance.