Kdelay - Keithley S530 User Manual

S530 Parametric Test System Test Subroutine Library User's Manual
Details
This subroutine measures the substrate current when the gate voltage (V
V held constant. Maximum current measured is returned as the function result. The gate voltage at
BS
maximum current is also returned. In some cases, peak substrate current is referred to as I
A substrate connection is mandatory; the ismax parameter returns -1.0 if the sub parameter is less
than 1.
The typical value for the npts parameter is 10 to 20.
V/I polarities
N-channel +V
P-channel -V
Source-measure units (SMUs)

SMU1: Forces vds, maximum current limit

SMU2: Sweeps V

SMU3: Forces vbs, default current limit, measures I
Example
isubmx(d, g, s, sub, vds, vbs, vlow, vhigh, npts, &ismax, &vgmax)
Schematic

kdelay

This subroutine provides an appropriate delay time based on current and voltage values.
Usage
void kdelay(int npin, double i, double v)
npin
i
v
S530-907-01 Rev. A / September 2015
, +V and V , -V
DS low high BS
, -V and V , +V
DS low high BS
, default current limit
GS
Input The number of pins connected to the charging node
Input The current, in amperes
Input The voltage, in volts
Section 3: Test subroutine library reference
) is swept with V
GS
SX
and
DS
.
SX
3-47