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InfiniiMax III Series Probes User’s Guide
8
SPICE Models
SPICE Models for N2838A, MX0109A, and N2836A Probe Heads
These are SPICE models for the input impedances of the various InfiniiMax III probes.
Generic SPICE sub-circuit files are listed so they can be copied and pasted into user’s
SPICE simulations.
, “Performance Plots” shows the matching between the measured input
impedance and these modeled input impedances for the various probe heads.
The following diagram shows the SPICE circuit used for these probe heads:
• N2838A 25 GHz PC Board ZIF Tip (with N5439A ZIF Probe Head)
• MX0109A 26 GHz Extreme Temperature Solder-In Probe Head
• N2836A 26 GHz Solder-In Probe Head
Figure 74
SPICE circuit to use for N2838A, MX0109A, and N2836A probe heads
The input impedance is only a function of the probe head; the amplifier input does not
significantly affect the input impedance.
Содержание InfiniiMax III N2800A Series
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Страница 47: ...InfiniiMax III Probe Heads 2 InfiniiMax III Series Probes User s Guide 47 Figure 41 Positioning Wires...
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Страница 112: ...112 InfiniiMax III Series Probes User s Guide 7 Performance Plots N2838A N5439A 25 GHz PCB ZIF Tip Head with N2803A...
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Страница 127: ...Performance Plots 7 InfiniiMax III Series Probes User s Guide 127 N5445A 30 GHz Browser Head 1 mm span with N2803A...
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