Column Control DTX

Characterization of DDR4 Receiver Sensitivity Impact on Post-equalization Eye

White Papers

White Paper from DesignCon 2017

This white paper was first published at DesignCon in January, 2017. Reprinted with permission from DesignCon.

Abstract

The current DDR4 specification for the receiver (Rx) sensitivity defined at the Rx input does not account for equalization functionalities implemented in advanced Rx designs and may lead to over-design. In this paper we present a novel approach to characterize the Rx sensitivity impact on Rx post-equalization signal. We demonstrate that at the Rx output timing impairment is induced by common mode variation. The resulting jitter can be represented by a deterministic jitter model and incorporated in the statistical eye calculation. Timing margin and jitter in the post-equalization eye is measured at Vref to eliminate over-design.

 

×

Please have a salesperson contact me.

*Indicates required field

Preferred method of communication? *Required Field
Preferred method of communication? Change email?
Preferred method of communication?

By clicking the button, you are providing Keysight with your personal data. See the Keysight Privacy Statement for information on how we use this data.

Thank you.

A sales representative will contact you soon.

Column Control DTX