Patent ID: 7161442
Filing Date: 2007-01-09
Classification: H03B,H03K

Abstract:
1. A latch system comprising: a current source module for providing at least one DC current; a first cross-coupling module being electrically connected to the current source module, the first cross-coupling module comprising: an action module directly connected to the first and the second transistors wherein the action module comprises a plurality of action blocks, each of the action blocks comprises a first device and a second device, the first device and the second device of one of the action blocks are gate-coupled, and the action blocks are electrically connected to one another through cascading; a plurality of bias terminals, each of the bias terminals being coupled to the gates of the first device and the second device of one of the action blocks for providing an operating bias voltage, and the operating bias voltages provided by the bias terminals having different values; and an LC tank electrically connected to the first node of the first transistor and the third node of the second transistor, the LC tank having at least one capacitor and at least one inductor; wherein the first node of the first transistor is directly connected to the second device of a first action block, the second node of the first transistor being electrically connected to the first device of a second action block, the third node of the second transistor being directly connected to the first device of the first action block, the fourth node of the second transistor being electrically connected to the second device of the second action block.