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:
Jun. 07, 1994
Filed:
Dec. 28, 1992
Michael G Curtin, Limerick, IE;
Michael Byrne, Limerick, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
A D/A converter of the type provided with an amplifier to produce the analog output signal and formed as an IC chip. The chip includes a power voltage monitor to sense when the applied DC voltage is above a preset lower level and below a preset upper level. When that condition is sensed, the monitor activates a control circuit which in turn opens a transmission gate between the amplifier output circuit and the converter output terminal, and closes a transmission gate between the output terminal and ground. When the DC voltage goes above the preset upper level, and a valid digital word is loaded into the converter register and presented for conversion, the condition of the transmission gates is reversed to provide for normal operation of the converter.