Keithley 4200-SCS - Vgid_Dc_Pulse_Pulseiv

4200-900-01 Rev. K / February 2017 Return to Section Topics 3-59
Model 4200-SCS User’s Manual Section 3: Common Device Characterization Tests
VgId_DC_Pulse_pulseiv
Description The VgId_DC _Pulse pulseiv sweep is used to perform a Pulsed vs DC Vg-Id
sweep using the 4200-PIV-A package. This test is similar to a typical Vg-Id but
only two sources are used: one for the DUT Gate and one for the DUT Drain.
Pulsed Measurements are made with the 2-channel scope, 4200-SCP2.
This routine can run the sweeps in three different ways: 1) DC only; 2) Pulse only;
3) Pulse and DC curves. This routine supports from one to 10 Vd-Id curves based
on up to 10 different Vgs values.
This routine also supports the 4200-PIV-A package using the 4200-RBT. For this
package, all test parameters and limits are given below, except the 4200-PIV-A
with the 4200-RBT has a max pulse width of 150 ns, not the 250 ns of the
4205-RBT.
All voltage levels specified below assume a 50 Ω DUT load.
Connection The source and body (well) of the DUT must be shorted together and connected to
the common low (outer shield) of the SMA cables on the AC+DC output of the
4205-RBT. The RBT connected to GateSMU (the RBT with the Power Divider)
should be connected to the gate. The RBT connected to DrainSMU should be
connected to the drain. Use either G-S-G probes for RF structures, or use DC
probes with the 4200-PRB-C adapter cables for DC structures.
Set the appropriate values for the Vds-Id parameters. Inputs, outputs and returned
values are provided in Table 3-16, Table 3-17 and Table 3-18.
-5 Invalid value for PulseWidth
-6 Invalid value for PulsePeriod
-7 Invalid value for AverageNum
-8 Invalid value for LoadLineCorr
-9 Array sizes do not match
-10 Array sizes not large enough for sweep
-11 Invalid VPUId
-12 Invalid GateSMU
-13 Invalid DrainSMU
-14 Unable to initialize PIV solution
Table 3-16
Inputs for Vgid_DC_Pulse_pulseiv
Input Type Description
Vds double The voltage value for Vd. For DC only sweeps, Vds must be
between -200 V to +200 V dependent on the type of SMU and the
current requirements of the DUT. For pulse and pulse and DC
Sweeps, Vds must be between -5 V to +5 V.
VgStart double The starting step value for Vg. For DC only sweeps, VgStart must be
between -200 V to +200 V dependent on the type of SMU and the
current requirements of the DUT. For pulse and pulse and DC
Sweeps, VgStart must be between -5 V to +5 V.
Table 3-15
Return values for vgsid_pulseiv (continued)
Value Description