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Файл:Физика полупроводников и нанотехнологий. Учебно-методическое пособие
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0 2 4 6 8 10
U=0
-
0,5
-
1,0
-
1,5
!&/. 9.15, /#/(3)+( 6!&$!"# UR1=700 $. .#/-#)*-2 $/7(9 6#
3!(&-)*"#0 #/& ,!-(!&/(&- /#/(3)+( 200 $/ )"&, $/7(9
(#- 6# ;(#0 : #/& / 25(#$ (#1#, 5(# /#6!#(&3)"& !'&/(#! /#/(3)+( 100 $, !3" 2 $.
Рис. 9.15. $0/(3# 34,# "4, 3#)*(-$6!"4, ,!-(!&/(&- (!"'&/(#!
2N3458 " ;-!" #/%&))#/-#6 XSC2
! 2&!#3""# /$0/(3# ,!-(!&/(&- &//) 2$#1# (!"'&/(#! 6! /(3)"# " !&/. 9.16.
IC
$
8
6
4
2
Рис. 9.16. ! 2&!#3""# /$0/(3# 34,# "4,
,!-(!&/(&- (!"'&/(#! Q1
51
Задание 9.3
1. #9!(* /,$2 3 ! -(#! Multisim (/$. !&/. 9.12). -5/(3
&//) 2$#1# (!"'&/(#! 349!(* # &" &' (!"'&/(#!#3 2N3684,
2N3458, 2N3822, 2N3823, 2N3824, 2N3921 (A, B), &/6#)*'2$#1# 3 ' "&& 9.1.
2. 6! )&(* & '!1&/(!&!#3(* /$0/(3# 34,# "4, ,!-(!&/(&- (!"'&/(#!, ")#1&5"4, &'#9!:""4$ " !&/. 9.15.
3. 4 )&(* #( )*"# & 3/(3&(* 3 #(5( /$0/(3# ,!-(!&/(&-, ")#1&5"4, &'#9!:""4$ " !&/. 9.16. .!#3/(& #/& U & I
&, 6#)*'2+/* "/(!#0-$& #/%&))#/-#6#3 XSC1, XSC2 (!&/. 9.14,
9.15), 6!#1! 2&!#3(* &,.
Снятие выходных характеристик р-канального транзистора
с p-n переходом
)+ /"+(&+ 34,# "4, ,!-(!&/(&- (!"'&/(#! /#9&!(/+
/,$ (!&/. 9.17). " #()&5(/+ #( 6! 4 2<0 /,$4
(/$. !&/. 9.13) &'$""&$ 6#)+!"#/(& "6!+:"&+ V1, /$<"&$
(!21#)*"#1# "6!+:"&+, 1"!&!2$#1# XFG1 3"&', " (-5 ),
(-: &'$""&$ 6#)+!"#/(& 3,# #3 & #/%&))#/-#6 XSC2. $0/(3# ,!-(!&/(&- р--")*"#1# (!"'&/(#!, &'#9!:""#1# "
;-!" #/%&))#/-#6 XSC2, 6! /(3)"# " !&/. 9.18.
Задание 9.4
1. #9!(* /,$2 3 ! -(#! Multisim (/$. !&/. 9.17). -5/(3
&//) 2$#1# (!"'&/(#! 349!(* # &" &' (!"'&/(#!#3 2N2608,
2N2609, 2N4381, 2N5115, 2N5021, &/6#)*'2$#1# 3 ' "&& 9.2.
2. 6! )&(* & '!1&/(!&!#3(* /$0/(3# 34,# "4, ,!-(-
!&/(&- (!"'&/(#!, ")#1&5"4, &'#9!:""4$ " !&/. 9.18.
3. 4 )&(* #( )*"# & 3/(3&(* 3 #(5( /$0/(3# ,!-(!&-
/(&-, ")#1&5"4, &'#9!:""4$ " !&/. 9.16. .!#3/(& #/& U & I
&, 6#)*'2+/* "/(!#0-$& #/%&))#/-#6#3 XSC1, XSC2 (/$. !&/. 9.17,
9.18), 6!#1! 2&!#3(* &,. ) 2( &$(* 3 3& 2, 5(# "6!+:"&+
52
/(#- UC (!"'&/(#! &$8( #(!&%()*"28 6#)+!"#/(*, "6!+:-
Ext Trig
+
Ext Trig
+
"&+ '(3#! U – 6#)#:&()*"28.
U3A
1QA
1QB
1QC
1QD
V1
2 V
3
4
5
6
1
0
4
5
D0D1D2D3D4D5D6
Vref+
Vref-
VDAC8
A1
Output
XSC1
_
B
A
_+_
D7
+
A
+
XSC2
B
_+_
_
8
2
1CLR
1
1INA
74LS393D
XFG2
0
XFG1
2
0
R2
100kΩ
9
R1
10Ω
7
Q2
6
2N2608
0
Рис. 9.17. ,$ )+ /"+(&+ 34,# "4, ,!-(!&/(&-
р--")*"#1# (!"'&/(#!
Рис. 9.18. $0/(3# 34,# "4, ,!-(!&/(&- р--")*"#1#
(!"'&/(#! " ;-!" #/%&))#/-#6 XSC2
53
Практическое занятие № 10
'(3#!#$ (.
-
(!"'&/(#
!), (
MOS
FET
)
ОПРЕДЕЛЕНИЕ ХАРАКТЕРИСТИК ПОЛЕВОГО ТРАНЗИСТОРА МОП
ТИПА. ИЗУЧЕНИЕ ХАРАКТЕРИСТИК ПРЯМОЙ ПЕРЕДАЧИ И ВЫ-
ХОДНЫХ ХАРАКТЕРИСТИК ТРАНЗИСТОРА
Общие сведения
.#)34 (!"'&/(#!4 26!3)+8(/+ ;)-(!&5/-&$ 6#)$, "
(#-#$, -- 9&6#)+!"4 (!"'&/(#!4. #()&5& #( 9&6#)+!"4, (!"'&/(#!#3, (#- 5!' -#(#!4 #6! )+(/+ 3&:"&$ "#/&()0 '!+ #3 #9#&, '"-#3 – ;)-(!#"#3 & 4!#-, (#- 3 6#)34, (!"'&/(#!, #92/)#3)" 3&:"&$ "#/&()0 '!+ # "#1# '"-. /3+'& /
;(&$ 6#)34 (!"'&/(#!4 "'438( (-: униполярными.
')&58( 7/(* !')&5"4, (&6#3 6#)34, (!"'&/(#!#3 (field
effect transistor,-FET). .#)34 (!"'&/(#!4 )+(/+ " 3 1!2664 –
(!"'&/(#!4 / 26!3)+8<&$ p-n 6!,# #$ (junction FET) & (!"'&/(#!4 / 26!3)+8<&$ '(3#!#$, &)& .-(!"'&/(#!4 (Metall-
Oxyde-Semiconductor FET,-MOS FET).
)//&&-%&+ .-(!"'&/(#!#3 & &, /##(3(/(328<& #9#'"5"&+ 3 ;)-(!&5/-&, /,$, 6! /(3)"4 " !&/. 10.1.
.#)3#0 (!"'&/(#! / &'#)&!#3""4$
.-(!"'&/(#! #9 """#1# (&6 (/ 3/(!#-
p--")*"40 n--")*"40 p--")*"40 n--")*"40
.-(!"'&/(#! #9#1<""#1# (&6 (/ &" 2%&-
Рис. 10.1. )//&&-%&+ .-(!"'&/(#!#3 & &, 2/)#3"4
#9#'"5"&+ 3 ;)-(!&5/-&, /,$,
54
-#0 (!"'&/(#! &'1#(3)&3(/+ " #/"#3 6)/(&"4 -!$"&+
2
(6# )#:-&), &$8<0 343# .. #) 6!#/(28 -#"/(!2-%&8 &$(
.-(!"'&/(#! / &" 2%&!#3""4$ -")#$.
)*"4 (#-& '(3#!#3 .-(!"'&/(#!#3 3 /! "$ $"*7
1 6. ,# "4 /#6!#(&3)"&+ .-(!"'&/(#!#3 /#/(3)+8(
1013…1015 $.
")#1&5"# )"&8 9&6#)+!"4, (!"'&/(#!#3 " р-n-р & n-р-n
(!"'&/(#!4, 6#)34 (!"'&/(#!4 )+(/+ " р--")*"4 & n-
-")*"4. n--")*"4, 6#)34, (!"'&/(#!#3 (#- -") /("#3&(/+ ($ $"*7, 5$ /&)*" 6 ( 6#("%&) '(3#!.
6#)34, (!"'&/(#!#3 р--")*"4, "9)8 (/+ #9!("#
+3)"&.
Характеристики полевых транзисторов и параметры
малых сигналов
.!& 3)&5&", "6!+:"&0 U 9#)*7&, U0 (U0 < U < 0), 6! (#5"+ ,!-(!&/(&- (!"'&/(#! #6&/43(/+ 2!3""&$
U
U
З
, (10.1)
0
1 I
I I
= −
C S
–(#- /(#- ((#- "/4<"&+) 6!& U = 0.
S
1
!#$ 6! (#5"#0 ,!-(!&/(&-& '"5"& &$8( выходные, &)& /(#-#34 ,!-(!&/(&-& 6#)34, (!"'&/(#!#3.
4!:"& (10.1) $#:"# &/6#)*'#3(* (-: & )+ #6&/"&+ 6! (#5"4, ,!-(!&/(&- .-(!"'&/(#!#3, -- "#!$)*"# #(-
-!4(4,, (- & "#!$)*"# '-!4(4,, /)& 25/(* '"-& "6!+:"&0
U & U0. $0/(3# 34,# "4, (/(#-#34,) ,!-(!&/(&- n-
-")*"#1# .-(!"'&/(#! 6! /(3)"# " !&/. 10.2.
)+ "#!$)*"# '-!4(4, .-(!"'&/(#!#3 3 -5/(3 3)&5&"4 IS &/6#)*'2(/+ (#- /(#- 6!& UЗ= 2 U0. $4/) ;(#1# /("#3&(/+
+/"4$ 6!& /!3""&& 6! (#5"4, ,!-(!&/(&- .(!"'&/(#!#3 #9 """#1# & #9#1<""#1# (&6#3 (!&/. 10.3, &
55
!&/. 10.3, 9). 6!+:"& '(3#!-&/(#- )+ .-(!"'&/(#!#3
6
4
B
U0
$#:( 6#347(*/+ # 3)&5&"4 "6!+:"&+ 6!#9#+ #-/& "#1# /)#+,
/#/(3)+8<1# #-#)# 50 , 6#;(#$2 (#- /(#- (-&, (!"'&/(#!#3
$#:( '"5&()*"# 6!347(* 3)&5&"2 IS.
IС , $A
10
8
2
0
UЗ = 0 B
-0,5
-1,0
-1,5
-2,0
-2,5
0 2 4 6 8 10 UС , B
Рис. 10.2. $0/(3# 34,# "4, (/(#-#34,) ,!-(!&/(&-
n--")*"#1# .-(!"'&/(#!
IC , $
IC , $
IS
IS
0 UЗ,
0 U0 2U0 UЗ ,
9
Рис. 10.3. 4,# "+ ,!-(!&/(&- .-(!"'&/(#!:
а – 3,# "+ ,!-(!&/(&- .-(!"'&/(#! #9 """#1# (&6;
б – 3,# "+ ,!-(!&/(&- .-(!"'&/(#! #9#1<""#1# (&6
56
.# 6! (#5"#0 ,!-(!&/(&- (!"'&/(#! $#:( 94(* #6!-
U const
З C S
S U U I I
= − = ⋅
S C
I I
=
0
2
S
I
)" (-#0 1# 6!$(!, -- -!2(&'"
дI
=
дU
C
.
З
=
C
S
&!"%&!#3"&$ 34!:"&+ (10.1) $#:"# #6! )&(* -!2(&'"2 --
2
I
S
( )
2
U U
0 0
0
2
.
(10.2)
/#940 &"(!/ 6! /(3)+( '"5"& -!2(&'"4 6!&
#9#'"5$# 5!' SS. )+ 6#)34, (!"'&/(#!#3 / 26!3)+8<&$ р-n
6!,# #$ ;(# '"5"& -!2(&'"4 +3)+(/+ $-/&$)*"4$.
' 34!:"&+ (9.2) ",# &$
SU=
S
. (10.3)
6!* 6# )1-# #6! )+$4$ #64("4$ 62($ 6!$(!$ SS &
IS $#:"# 6!#/(# #6! )&(* "6!+:"& #(/5-&. &6#34 '"5"&+
6!$(!#3 $)#$#<"#1# 6#)3#1# (!"'&/(#! /#/(3)+8(
IS = 1…50 $, |U0|=0,5…5 , SS = 2…20 $/.
Снятие входной характеристики n-канального МОП-транзистора
с индуцированным каналом (обогащенного типа)
,
)+ /"+(&+ 3,# "#0 ,!-(!&/(&-& (!"'&/(#! /#9&!(/+ /,-
$ (!&/. 10.4).
)+ /"+(&+ ,!-(!&/(&-& " '(3#! (!"'&/(#! Q1 #( 1"!(#! XFG1 6# (/+ "6!+:"& (!21#)*"#0 #!$4 $6)&(2 #0 4 .
/(!#0-& 1"!(#! &'#9!:"4 " !&/. 10.5.
@(# : "6!+:"& 6#/(26( " 3,# #/%&))#/-#6 XSC2, "
1# 3,# 6#/(26( "6!+:"&, 6!#6#!%&#")*"# (#-2 /(#-
(!"'&/(#! Q1. .!& 3-)85"&& !:&$ / #/%&))#/-#6 " 1#
;-!" #(#9!:(/+ 3,# "+ ,!-(!&/(&- (!"'&/(#! (!&/. 10.6).
57
1
)"&
Рис. 10.4. ,$ )+ /"+(&+ 3,# "#0 ,!-(!&/(&-&
n--")*"#1# (!"'&/(#! / &" 2%&!#3""4$ -")#$
)+ 2 #9/(3 !//$#(!"&+ /&1") " -") /$<" 3"&' "
3 )"&+ (" 100 $).
Рис. 10.5. /(!#0-& 1"!(#! XFG1
@(2 : ,!-(!&/(&-2 /) 2( &'#9!'&(* #( )*"#, / 1! 2&!#3""4$& #/+$& U & I (!&/. 10.7). #- I #6! )+(/+ 6# #!$2)
U
IR=
C
.!& ;(#$ $/7(9 6# 3!(&-)*"#0 #/& /#/(3)+( 5
B
, UB – "6!+:"& " 3,# -") #/%&))#/-#6 XSC2.
$
58
.
- 3& "# &' !//$#(!"&+ ;(#0 ,!-(!&/(&-&, "6!+:"& U0
З
U
∆
∆
#(/5-& (!"'&/(#! !3"# +1,2 ), -!2(&'" ,!-(!&/(&-&
I
S
C
=
– 6!&$!"# 8 $/, $/7(9"40 (#- (6!& U = 2 U0)
IS=5 $, #/((#5"40 (#- I0 (6!& U < U0) 6!&$!"# !3" 0,45 $.
Рис. 10.6. !-(!&/(&- (!"'&/(#! Q1 " ;-!" #/%&))#/-#6 XSC2
IC $
25
20
15
10
5
0
-2 -1 0 1 2 3 4 U
Рис. 10.7. ! 2&!#3""+ 3,# "+ ,!-(!&/(&- (!"'&/(#! Q1
59
Задание 10.1
1. #9!(* /,$2 )+ /"+(&+ 3,# "#0 ,!-(!&/(&-& n-
-")*"#1# .-(!"'&/(#! / &" 2%&!#3""4$ -")#$. !&"(4
(!"'&/(#!#3: BSD215, ZVN0124A, ZVN2106A, ZVN3306A.
2. "+(* ,!-(!&/(&-2 (!"'&/(#! ")#1&5"# (#0, 5(# &'#9-
!:" " !&/. 10.6.
3. '#9!'&(* ,!-(!&/(&-2 (!"'&/(#! / 1! 2&!#3""4$&
#/+$& ")#1&5"# !&/. 10.7.
4. 6! )&(* "6!+:"& #(/5-& U0 (!"'&/(#!, -!2(&'"2 ,-
!-(!&/(&-& S, $/7(9"40 (#- IS, #/((#5"40 (#- I0.
Снятие входной характеристики n-канального
МОП-транзистора с встроенным каналом
)+ /"+(&+ 3,# "#0 ,!-(!&/(&-& (!"'&/(#! /#9&!(/+ /,$ (!&/. 10.8).
Рис. 10.8. ,$ )+ /"+(&+ 3,# "#0 ,!-(!&/(&-&
n--")*"#1# (!"'&/(#!
/(!#0-& 1"!(#! XFG1 &'#9!:"4 " !&/. 10.9.
60
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