Differential charge reduction

Patent metadata

Field	Value
Publication number	US-8941439-B2
Application number	US-201313769096-A
Country	US
Kind code	B2
Filing date	Feb 15, 2013
Priority date	Feb 15, 2013
Publication date	Jan 27, 2015
Grant date	Jan 27, 2015

Abstract

One embodiment relates to an apparatus configured to cancel charge injected on a node of a differential pair of nodes. A dummy circuit element can inject charge on an inverted node to cancel charge injected on a non-inverted node by a switch when the switch is switched off. In addition, another dummy circuit element can inject charge on the non-inverted node to cancel charge injected on the inverted node by another switch when the other switch is switched off. These dummy circuits elements can be cross-coupled.

First claim

What is claimed is:

1. An apparatus comprising:
a first switch configured to receive a first differential input and to provide the first differential input to a first node when switched on;
a second switch configured to receive a second differential input and to provide the second differential input to a second node when switched on, wherein the first node and the second node are a differential pair of nodes;
a first dummy circuit element configured to inject charge on the sec…

Assignees

• Analog Devices Inc

Inventors

• Bardsley Scott G
• Derounian Peter
• Murden Franklin M

Classifications

• H03M1/1225

  Electricity · mapped topic

• H03F1/3211

  Electricity · mapped topic

• H03F3/45179 Primary

  Electricity · mapped topic

• H03K17/005

  Electricity · mapped topic

• H03M1/0863

  Electricity · mapped topic