Patent ID: 8040160
Filing Date: 2011-10-18
Classification: G06F,H03K,H04B,H04L

Abstract:
1. A driver arrangement, comprising: a charge pump based oscillator comprising a first charging element having a first capacitance, the oscillator being configured to generate an oscillator signal depending on the first capacitance and on a first charging current; a controllable current source configured to generate the first charging current depending on a current control signal and to generate a second charging current having a first predetermined scaling ratio with respect to the first charging current; a control unit configured to generate the current control signal; and an output circuit comprising a first switching device comprising a first switch coupled directly to a data input, a second switch coupled to the data input through an inverter element, a first current source coupled to a voltage input, a second current source coupled to a reference potential connection and a second charging element having a second capacitance, the output circuit being configured to generate an output signal depending on a data signal provided at the data input, on the second charging current and on the second capacitance, wherein the second capacitance has a second predetermined scaling ratio with respect to the first capacitance, and wherein a connection between the first and second switches forms an output of the first switching device and is coupled to the second charging element and a control input of a second switching device.