4.5 Gsps MIPI D-PHY Receiver Circuit for Automatic Test Equipment

As signal transmission loss in automatic test equipment (ATE) is large, receiving a signal without an equalizer is difficult. This study designs a 4.5 Gsps mobile industry processor interface (MIPI) D-PHY analog front-end receiver circuit for ATE. The D-PHY signal uses a DC-coupled low-voltage signal, making the use of commercially available continuous time linear equalizer (CTLE)-included redrivers difficult. We propose a receiving circuit with an equalizer as an off-the-shelf device that can receive D-PHY signals from long distances. The developed receiving circuit achieved optimal signal restoration performance by tuning for the fixed loss characteristics. Additionally, using this receiving circuit, we verified the complete output-signal conversion into an image in a wafer mass production environment.