Spice Models - Keysight N2800A User Manual

Keysight InfiniiMax III Series Probes
User's Guide

8 SPICE Models

SPICE Models for N5440/1/4/5/7A Probe Heads 130
SPICE Models for N2838A and N2836A Probe Head 136
Simplified InfiniiMax III Schematic 139
The SPICE models in this chapter are for the input impedances of the various
Infiniimax III+ probes heads. The input impedance is only a function of the probe
head, as the amplifier input does not significantly affect the input impedance.
Chapter 7, "Performance Plots shows the matching between the measured input
impedance and these modeled input impedances for the various probe heads.
129