A Fully-Integrated Adaptive Temperature-Compensating Ethernet Equalizer for Automotive Applications

Abstract

In this paper, the Ethernet equalizer that compensates automotive temperature range is presented. More and more, the communications in automotive are important because of many electronics in the vehicle. Ethernet protocol can be candidate of automotive communications. However it should satisfy AEC-Q100. For meeting AEC-Q100, it should have an operational temperature range from -40 degree to 150 degree. This paper proposes the Ethernet equalizer that can recover the data until 100m CAT-5 cable adaptively at -40 degree to 150 degree. For supporting the wide temperature range, feedback system is used. The proposed equalizer has 31.25 MHz bandwidth and a fully-differential structure. The proposed automotive Ethernet equalizer is implemented in a Hynix 0.13 um BCDMOS technology.