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:
Jan. 03, 1995
Filed:
Feb. 17, 1993
Hiroyuki Mizomoto, Tokyo, JP;
Yoshiaki Kitamura, Tokyo, JP;
NEC Corporation, , JP;
Abstract
A digital-to-analog converter includes a decoder, a full differential type low-pass filter, and first to fourth switches. The decoder has first and second inputs and first and second outputs. The low-pass filter has first and second inputs and first and second outputs. The first switch has a first terminal connected to a first reference voltage source, a second terminal connected to the first input of the low-pass filter, and a third terminal as a control terminal connected to the first output of the decoder. The second switch has a first terminal connected to the first reference voltage source, a second terminal connected to the second input of the low-pass filter, and a third terminal as a control terminal connected to the second output of the decoder. The third switch has a first terminal connected to a second reference voltage source, a second terminal connected to the second input of the low-pass filter, and a third terminal as a control terminal connected to the first output of the decoder. The fourth switch has a first terminal connected to the second reference voltage source, a second terminal connected to the first input of the low-pass filter, and a third terminal connected to the second output of the decoder.