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:
Jul. 17, 2012
Filed:
May. 02, 2011
Christian Steffen Birk, Innishannon, IE;
Christian Steffen Birk, Innishannon, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
A bootstrapped switch circuit can include at least one transistor, to receive an input signal and allow the input signal to pass through as an output signal based on a control signal, and a voltage-controlled voltage source, to provide first and second voltages between a gate and a source of the at least one transistor in response to the control signal. The voltage-controlled voltage source can include a differential pair and a current source. A gate of one of the differential pair can receive the control signal and a gate of the other of the differential pair can receive a logical inverse of the control signal. The current source can provide a current to connected sources of the differential pair. The first voltage can turn on the at least one transistor and be produced in response to a first logic state of the control signal resulting in the current of the current source flowing entirely through a first one of the differential pair. The second voltage can turn off the at least one transistor and be produced in response to a second logic state of the control signal resulting in the current of the current source flowing entirely through a second one of the differential pair.