Spice Models - Keysight InfiniiMax III+ Series User Manual

Keysight InfiniiMax III+ Series Probes
User's Guide

9 SPICE Models

N2848A QuickTip Head with N2849A QuickTip Tip
N5439A ZIF Probe Head with N5440A ZIF Tip
N5439A ZIF Probe Head with N2838A ZIF Tip
N2836A 26 GHz Solder-In Probe Heads
N5441A 16 GHz Solder-In Probe Head
N5445A Browser Probe Head
N5444A SMA Probe Head
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 6, "Performance Plots shows the matching between the measured input
impedance and these modeled input impedances for the various probe heads.
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