How do you define the ramp rate [Ramp] in the IBIS File? - How do you define the ramp rate [Ramp] in the IBIS File? Description While the rise and fall time is defined as the time it takes from the output to go from 20% to 80% of its final value, the ramp rate is defined as: dV 20% to 80% voltage swing --- = -------------------------------------------------------- dt Time it takes to swing the above voltage The ramp rate must be specified as an explicit fraction and must not be reduced. The [Ramp] values can use "NA" for the min and max values only. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']