Patent ID: 8855176
Filing Date: 2014-10-07
Classification: H03M,H04B,H04L

Abstract:
1. A method for operating an integrated circuit device, the method comprising: outputting a first input voltage and a second input voltage using an equalizer, the first input voltage carrying serial data at a frequency of at least 1 GHz, the second input voltage carrying serial data at a frequency of at least 1 GHz; outputting a first DAC signal and a second DAC signal using a digital to analog converter, the first DAC signal and the second DAC signals being characterized by a frequency of less than 0.5 GHz; outputting a first loopback signal and a second loopback signal using a loopback driver, the first loopback signal and the second loopback signal being characterized by a frequency of at least 1 GHz, the first loopback signal coupled to a first switch, the first switch comprising a first filter, the second loopback signal coupled to a second switch, the second switch comprising a second filter; and receiving a signal at a sense amplifier, the sense amplifier having a first input coupled to the first input voltage, a second input coupled to the second input voltage, a third input coupled to the first loopback signal through the first switch and the first DAC signal, a fourth input coupled to the second loopback signal through the second switch and the second DAC signal; whereupon the equalizer, the digital to analog converter, the loopback driver, and the sense amplifier are configured on the integrated circuit device.