Patent ID: 7116169
Filing Date: 2006-10-03
Classification: H03F

Abstract:
1. An apparatus for providing a drive signal for a device; said drive signal being related to a received signal; the apparatus operating between an upper voltage rail and a lower voltage rail; the apparatus comprising: (a) a signal switching circuit; said signal switching circuit receiving said received signal and presenting a control signal at at least one control output node; said control signal being related to said received signal; (b) at least one control circuit coupled with said signal switching circuit; said at least one control circuit responding to said at least one control signal for generating at least one drive control signal; (c) at least one current generating circuit coupled with said at least one control circuit, coupled with at least one output node and coupled with said lower voltage rail; said at least one current generating circuit responding to said at least one drive control signal to present said drive signal at said at least one output node; a selected output node of said at least one output node being coupled with said device, wherein said at least one control circuit is a first control circuit generating a first said drive control signal and a second control circuit generating a second said drive control signal; said first control circuit enabling a signal path for faster discharge by said second control circuit when said first control circuit is generating said first drive control signal; said second control circuit enabling a signal path for faster discharge by said first control circuit when said second control circuit is generating said second drive control signal.