Executing Sample Programs

HCI Measurement Program

User Function Setup:

 

NAME

UNIT

 

DEFINITION

 

 

 

 

 

 

 

 

 

Gm

S

DIFF(ID,VG)

 

 

Vtext

V

@MX-(@MY1/@MY2)-AT(VD,1)/2

 

Gmmax

S

MAX(Gm)

 

 

Vtci

V

@L2X

 

 

Idlin

A

@L1Y1

 

Display Setup:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Xaxis

 

Y1axis

 

Y2axis

 

 

 

 

 

 

 

 

NAME

VG

 

ID

 

Gm

 

SCALE

LINEAR

 

LINEAR

 

LINEAR

 

MIN

0 V

 

0 A

 

0 S

 

MAX

5 V

 

2 mA

 

1.5 mS

Also the DATA VARIAVLES fields set Vtext and Idlin.

Auto Analysis Function:

*LINE1: [ GRAD

[ 5

] line on [ Y1 ] at a point where

[ VG

]

=

]

[

]

 

[ 0

]

Gradient:

 

 

-----------------------------------------------------------

*LINE2: [ NORMAL

] line on [ Y1 ]

at a point where

[ ID

] = [

10u

]

[

]

[WHERE]

 

and a point

]

[ 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

Vtci:W/L Ratio (Gate width/Gate length ratio) =10 μm/1 μm

For changing the conditions, refer to “Modifying the Program” on page 9-35.

9-20

Agilent E5250A User’s Guide, Edition 9

Page 276
Image 276
Agilent Technologies Agilent E5250A manual User Function Setup, Auto Analysis Function