Idsat - Keithley S530 User Manual

Section 3: Test subroutine library reference

idsat

This subroutine measures drain-source current (I
substrate-source voltage (V
Usage
double idsat(int d, int g, int s, int sub, double vds, double vbs)
d
g
s
sub
vds
vbs
Returns
Details
If a zero or negative substrate pin is specified, the substrate is left floating. If the pin number is
greater than 0 and V
connected and forced.
V/I polarities
N-channel +V
P-channel -V
Source-measure units (SMUs)

SMU1: Forces vds, default current limit, measures I

SMU2: Forces vbs, default current limit
Example
result = idsat(d, g, s, sub, vds, vbs)
Schematic
3-42
DS
). The gate is tied to the drain.
BS
Input The drain pin of the device
Input The gate pin of the device
Input The source pin of the device
Input The substrate pin of the device
Input Drain-source voltage, in volts
Input Substrate bias, in volts
Output The measured drain current
is less than 0.9 mV, the substrate is grounded. In all other cases, it is
BS
, -V
DS BS
, +V
DS BS
S530 Parametric Test System Test Subroutine Library User's Manual
) at a specified drain-source voltage (V
DS
) and
DS
S530-907-01 Rev. A / September 2015