Agilent Technologies Agilent E5250A User Manual page 276

Executing Sample Programs
HCI Measurement Program
User Function Setup:
NAME
Gm
Vtext
Gmmax
Vtci
Idlin
Display Setup:
NAME
SCALE
MIN
MAX
Also the DATA VARIAVLES fields set Vtext and Idlin.
Auto Analysis Function:
*LINE1: [ GRAD
[ VG ] = [ 5
[ ]
Gradient: [ 0
-----------------------------------------------------------
*LINE2: [ NORMAL
[ ID ] = [ 10u
[ ]
and a point [WHERE]
[ ID ] = [ 10u
-----------------------------------------------------------
*MARKER: At a point where
[ Gm ] = [ MAX(Gm)
[ ]
---------------------
*Interpolate: [ON ]
PARAM.MES setup file extracts Idlin and Vtci by using the 4155/4156 User
Function and Auto Analysis Function. These parameters are extracted with the
following conditions:
Idlin: Gate voltage VG=5 V
Substrate voltage VB=0V
W/L Ratio (Gate width/Gate length ratio) =10 μm/1 μm
Vtci:
For changing the conditions, refer to "Modifying the Program" on page 9-35.
9-20
UNIT
S DIFF(ID,VG)
V @MX-(@MY1/@MY2)-AT(VD,1)/2
S MAX(Gm)
V @L2X
A @L1Y1
Xaxis Y1axis
VG
LINEAR LINEAR
0 V
5 V
] line on [ Y1 ]
] line on [ Y1 ]
Agilent E5250A User's Guide, Edition 11
DEFINITION
Y2axis
ID Gm
LINEAR
0 A 0 S
2 mA 1.5 mS
at a point where
at a point where
]
]
]
]
]