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:
Sep. 01, 1998
Filed:
Oct. 10, 1996
Applicant:
Inventors:
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341136 ; 341144 ;
Abstract
A current cell for converting a digital signal to an analog current signal is disclosed. The current cell includes a first PMOS transistor which receives the digital signal from a pre-stage processor by the gate. A drain of the first PMOS transistor is grounded. A second PMOS transistor has a source which is connected to the source of the first PMOS transistor, a gate which receives an inverse signal of the digital signal from the pre-stage processor, and a drain for providing the analog current signal. A third PMOS transistor is connected between a voltage source and the source of the first PMOS transistor. The third PMOS transistor has a gate to which a first reference voltage is applied.