Patent ID: 9531337
Filing Date: 2016-12-27
CPC Classification: H02M,H03F,H03M

Claim Text:
1. An interface circuit of a transmitter for removing common-mode current from a pair of complementary current signals from a digital-to-analog converter (DAC), the circuit comprising: a generator unit configured to generate a common-mode voltage of the pair of complementary current signals comprising at least a first current signal and a second current signal; a measurement unit configured to measure and output a difference voltage; and first and second current removing units directly coupled to an output of the DAC of the transmitter, the first and second current removing units configured to receive a respective one of the first current signal and the second current signal output from the DAC; wherein the difference voltage is based on a difference between the common-mode voltage generated by the generator unit and a common-mode reference voltage.