Patent ID: 7298183
Filing Date: 2007-11-20
Classification: H03K

Abstract:
1. A divider circuit comprising: a differential circuit having first and second inputs to receive a first differential signal and first and second differential output nodes, wherein the differential circuit has a first bias current generated by a first bias generator; and a cross-coupled circuit having a first control terminal coupled to a second output of the cross-coupled circuit and the first differential output node and a second control terminal coupled to a first output of the cross coupled circuit and the second differential output node, and wherein the cross-coupled circuit has a second bias current generated by a second bias generator that is independent of the first bias current, wherein the differential circuit is coupled to a first transistor having a control terminal to receive a signal to be divided, and wherein the first bias generator is coupled to the differential circuit through the first transistor, and wherein the cross-coupled circuit is coupled to a second transistor having a control terminal to receive the complement of the signal to be divided, and wherein the second bias generator is coupled to the cross-coupled circuit through the second transistor.