3-10 Return to Section Topics 2600S-901-01 Rev. C / January 2008
Section 3: DUT Test Connections Series 2600 System SourceMeter® Instruments Reference Manual
Multiple SMU connections
Figure 3-8 shows how to use two SMUs to test a 3-terminal device, such as an N-channel JFET. A
typical application is for SMU B to source a range of gate voltages, while SMU A sources voltage
to power the device and measures current at each gate voltage.
Figure 3-8
Model 2602/2612
G
S
D
N-Channel
JFET
Keithley
Model 2602/2612
G
S
D
SMU A
SMU B
HI
LO
HI
LO
Equivalent Circuit
Channel
A
LO G
Lo
HI G G G
HI
SS
Channel
B
LOG
Lo
HIGGG
HI
SS
HI HILO
Model 2636, two SMUs connected to a 3-terminal device
(local sensing, floating)
two SMUs connected to a 3-terminal device (local sensing)
Figure 3-9 shows how to use three SMUs to test the same 3-terminal device. The third SMU is
connected to the source (S) terminal of the JFET. This allows the source terminal to be biased
above signal low. Setting this SMU to output 0V effectively connects the source terminal of the
JFET to signal low.
To Next Page
Loading...
Need help?
General
