Микросхемотехника / amelina_m_a_amelin_s_a_programma_shemotehnicheskogo_modeliro
.pdf11. Ɇɨɞɟɥɢ ɷɥɟɤɬɪɨɧɧɵɯ ɤɨɦɩɨɧɟɧɬɨɜ ɢ ɜɵɱɢɫɥɟɧɢɟ ɢɯ ɩ ɪ ɦɟɬɪɨɜ |
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f1(VBD) |
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ȿɫɥɢ |
VBD ̓FC PBSW(T) ɬɨ |
f 2(VBD) |
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ɂɧɚɱɟ f 2(VBD) |
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ɍɪɚɜɧɟɧɢɹ ɞɥɹ ɲɭɦɨɜ MOSFET
ɍɪɚɜɧɟɧɢɹ ɞɥɹ ɲɭɦɨɜ, ɩɪɢɜɟɞɟɧɧɵɟ ɧɢɠɟ, ɩɪɢɦɟɧɹɸɬɫɹ ɜ ɦɨɞɟɥɹɯ ɭɪɨɜ- ɧɟɣ (Level) 1, 2, 3, 4, 5 ɢ ɜ ɦɨɞɟɥɢ EKV. Ɍɚɤɠɟ ɨɧɢ ɢɫɩɨɥɶɡɭɸɬɫɹ ɞɥɹ ɦɨɞɟɥɟɣ BSIM3 (Level 8) ɢ BSIM4 (Level 14) ɜ ɬɨɦ ɫɥɭɱɚɟ, ɟɫɥɢ ɦɨɞɟɥɶɧɵɣ ɩɚɪɚɦɟɬɪ NLEV ɭɤɚɡɚɧ. ȿɫɥɢ NLEV ɧɟ ɨɩɪɟɞɟɥɟɧ, ɬɨ ɞɥɹ ɪɚɫɱɟɬɚ ɲɭɦɨɜ ɦɨɞɟɥɟɣ ɭɤɚ- ɡɚɧɧɵɯ ɭɪɨɜɧɟɣ ɢɫɩɨɥɶɡɭɸɬɫɹ ɢɫɯɨɞɧɵɟ ɦɨɞɟɥɢ BSIM3 ɢ BSIM4.
ɉɚɪɚɡɢɬɧɵɣ ɬɟɩɥɨɜɨɣ ɲɭɦ ɜɵɜɨɞɨɜ ɪɟɡɢɫɬɨɪɨɜ:
IRG2 |
4 k T |
IRD2 |
4 |
k T |
IRS2 |
4 k T |
IRB2 |
4 k T |
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RG |
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RD |
RS |
RB |
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Ʉɚɧɚɥɶɧɵɣ ɞɪɨɛɨɜɨɣ ɢ ɮɥɢɤɤɟɪ ɲɭɦɵ:
Ichannel2 = Ishot2 + Iflicker2
ȼɧɭɬɪɟɧɧɢɣ ɮɥɢɤɤɟɪ-ɲɭɦ:
ȿɫɥɢ NLEV = 0 |
Iflicker2 |
KF IdrainAF |
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COX Leff 2 f |
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ȿɫɥɢ NLEV = 1 |
Iflicker2 |
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KF IdrainAF |
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COX Weff Leff f |
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ȿɫɥɢ NLEV = 2 ɢɥɢ 3 |
Iflicker2 |
KF GmAF |
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COX Weff Leff f AF |
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ȼɧɭɬɪɟɧɧɢɣ ɞɪɨɛɨɜɨɣ ɲɭɦ: |
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ȿɫɥɢ NLEV < 3, |
Ishot2 = (8/3) k T gm |
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ȿɫɥɢ NLEV=3 |
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Ishot2 GDSNOI |
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k T gm beta (Vgs-Vth) |
1 a |
a2 |
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ɝɞɟ a 1 Vds /Vdsat , ɟɫɥɢ Vds Vdsat (ɥɢɧɟɣɧɚɹ ɨɛɥɚɫɬɶ) ɢ a=0 ɜɨ ɜɫɟɯ ɨɫ- ɬɚɥɶɧɵɯ ɫɥɭɱɚɹɯ.
512 |
ɉɪɨɝɪ ɦɦ ɫɯɟɦɨɬɟɯɧɢɱɟɫɤɨɝɨ ɦɨɞɟɥɢɪɨɜ ɧɢɹ Micro-Cap. ȼɟɪɫɢɢ 9, 10 |
11.5.4.Ɉɩɪɟɞɟɥɟɧɢɟ ɩɚɪɚɦɟɬɪɨɜ ɦɨɞɟɥɢ ɆɈɉ-ɬɪɚɧɡɢɫɬɨɪɚ
Ɍɚ ɛ ɥ ɢ ɰ ɚ 1 1 . 1 0 . ɗɤɪɚɧɵ ɩɪɨɝɪɚɦɦɵ MODEL ɞɥɹ ɨɩɪɟɞɟɥɟɧɢɹ ɩɚɪɚɦɟɬɪɨɜ
ɦɨɞɟɥɢ ɆɈɉ-ɬɪɚɧɡɢɫɬɨɪɚ
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ɉɟɪɟɞɚɬɨɱɧɚɹ ɩɪɨɜɨɞɢɦɨɫɬɶ |
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Gfs vs. Ids |
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ȼɯɨɞɧɵɟ |
Ɍɚɛɥɢɰɚ ɡɚɜɢɫɢɦɨɫɬɢ ɩɪɨɜɨɞɢɦɨɫɬɢ ɩɪɹɦɨɣ ɩɟɪɟɞɚɱɢ Gfs ɨɬ ɬɨɤɚ |
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ɞɚɧɧɵɟ |
ɫɬɨɤɚ Id |
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Ɉɰɟɧɢɜɚɟɦɵɟ |
ɄɊ, RS, W, VTO, L |
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ɩɚɪɚɦɟɬɪɵ |
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Beta |
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KP |
W |
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t1 |
2 Ids beta 0,5 , |
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ɍɪɚɜɧɟɧɢɹ |
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L |
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t1 |
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Gfs |
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RS t1 |
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Ʉɨɦɦɟɧɬɚɪɢɢ |
Ɍɪɟɛɭɟɬɫɹ ɜɜɨɞɢɬɶ ɞɚɧɧɵɟ ɞɥɹ ɛɨɥɶɲɢɯ ɬɨɤɨɜ Id, ɱɬɨ ɩɨɜɵɲɚɟɬ |
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ɬɨɱɧɨɫɬɶ ɨɰɟɧɤɢ ɫɨɩɪɨɬɢɜɥɟɧɢɹ RS |
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ɋɨɩɪɨɬɢɜɥɟɧɢɟ ɤɚɧɚɥɚ ɜ ɪɟɠɢɦɟ "ɜɤɥɸɱɟɧɨ" Ron vs. Id |
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ȼɯɨɞɧɵɟ |
Ɍɚɛɥɢɰɚ ɡɚɜɢɫɢɦɨɫɬɢ ɫɬɚɬɢɱɟɫɤɨɝɨ ɫɨɩɪɨɬɢɜɥɟɧɢɹ ɫɬɨɤ-ɢɫɬɨɤ Ron |
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ɞɚɧɧɵɟ |
ɨɬ ɬɨɤɚ ɫɬɨɤɚ Id |
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ɍɫɥɨɜɢɹ |
ɇɚɩɪɹɠɟɧɢɟ ɡɚɬɜɨɪ-ɢɫɬɨɤ Vgs |
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Ɉɰɟɧɢɜɚɟɦɵɟ |
RD |
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ɩɚɪɚɦɟɬɪɵ |
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Beta |
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KP |
W |
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Vgst Vgs |
VTO Id RS , |
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L |
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2 |
2 Id ·0,5 |
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ɍɪɚɜɧɟɧɢɹ |
Vds |
vgst |
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¨vgst |
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beta ¹ |
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Ron |
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beta vgst |
Vds |
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Ʉɨɦɦɟɧɬɚɪɢɢ |
Ɍɪɟɛɭɟɬɫɹ ɜɜɨɞɢɬɶ ɞɚɧɧɵɟ ɞɥɹ ɦɚɥɵɯ ɬɨɤɨɜ Id ɞɥɹ ɩɨɜɵɲɟɧɢɹ |
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ɬɨɱɧɨɫɬɢ ɜɵɱɢɫɥɟɧɢɹ ɫɨɩɪɨɬɢɜɥɟɧɢɹ RD |
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11. Ɇɨɞɟɥɢ ɷɥɟɤɬɪɨɧɧɵɯ ɤɨɦɩɨɧɟɧɬɨɜ ɢ ɜɵɱɢɫɥɟɧɢɟ ɢɯ ɩ ɪ ɦɟɬɪɨɜ |
513 |
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ɉɪɨɞɨɥɠɟɧɢɟ ɬɚɛɥ. 11.10 |
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ȼɵɯɨɞɧɚɹ ɯɚɪɚɤɬɟɪɢɫɬɢɤɚ Ids vs. Vds |
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ȼɯɨɞɧɵɟ |
Ɍɚɛɥɢɰɵ ɢɡ ɬɪɟɯ ɡɧɚɱɟɧɢɣ |
Ids, Vds ɢ Vgs |
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ɞɚɧɧɵɟ |
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Ɉɰɟɧɢɜɚɟɦɵɟ |
W, VTO, RD, RS, LAMBDA, KP, L |
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ɩɚɪɚɦɟɬɪɵ |
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Id=0 |
ɩɪɢ Vgs < VTO, |
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Ids |
KP W |
Vgs VTO |
0,5 Vds Vds (1 |
LAMBDA Vds), |
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L |
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ɍɪɚɜɧɟɧɢɹ |
ɩɪɢ Vgs-Vth>Vds, |
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Ids |
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0,5 KP W |
(Vgs |
VTO)2 (1 LAMBDA Vds) |
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L |
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ɉɪɢ Vgs-Vth<Vds
ȿɫɥɢ ɢɫɩɨɥɶɡɨɜɚɥɢɫɶ ɩɪɟɞɵɞɭɳɢɟ ɫɟɚɧɫɵ (ɝɪɚɮɢɤɢ) ɨɩɬɢɦɢɡɚɰɢɢ,
ɧɟ ɫɥɟɞɭɟɬ ɞɟɥɚɬɶ ɢɧɢɰɢɚɥɢɡɚɰɢɸ ɩɟɪɟɞ ɜɵɩɨɥɧɟɧɢɟɦ ɬɟɤɭɳɟɣ ɨɩɬɢɦɢɡɚɰɢɢ. ȿɫɥɢ ɷɬɨ ɩɟɪɜɵɣ ɫɟɚɧɫ ɨɩɬɢɦɢɡɚɰɢɢ, ɬɨ ɢɧɢɰɢɚɥɢɡɚ- Ʉɨɦɦɟɧɬɚɪɢɢ ɰɢɸ ɩɪɨɢɡɜɨɞɢɬɶ ɧɟɨɛɯɨɞɢɦɨ. ȿɫɥɢ ɷɤɫɩɟɪɢɦɟɧɬɚɥɶɧɵɟ ɞɚɧɧɵɟ ɜɵɯɨɞɧɵɯ ɯɚɪɚɤɬɟɪɢɫɬɢɤ ɧɟɞɨɫɬɭɩɧɵ, ɩɪɨɩɭɫɬɢɬɟ ɷɬɨɬ ɫɟɚɧɫ (ɝɪɚ- ɮɢɤ) ɢ ɞɚɥɟɟ ɢɫɩɨɥɶɡɭɣɬɟ ɩɚɪɚɦɟɬɪɵ, ɩɨɞɨɛɪɚɧɧɵɟ ɜ ɩɪɟɞɵɞɭɳɢɯ
3-ɯ ɫɟɚɧɫɚɯ.
ɋɨɩɪɨɬɢɜɥɟɧɢɟ ɭɬɟɱɤɢ ɤɚɧɚɥɚ ɩɪɢ ɧɭɥɟɜɨɦ ɫɦɟɳɟɧɢɢ ɧɚ ɡɚɬɜɨɪɟ Idss vs. Vds
ȼɯɨɞɧɵɟ |
ɉɚɪɚ ɡɧɚɱɟɧɢɣ: |
ɬɨɤ ɫɬɨɤɚ Idss, |
ɧɚɩɪɹɠɟɧɢɟ ɫɬɨɤ-ɢɫɬɨɤ Vds |
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ɞɚɧɧɵɟ |
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ɍɫɥɨɜɢɹ |
ɇɚɩɪɹɠɟɧɢɟ Vgs=0 |
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Ɉɰɟɧɢɜɚɟɦɵɟ |
RDS |
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ɩɚɪɚɦɟɬɪɵ |
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ɍɪɚɜɧɟɧɢɹ |
RDS |
Vds |
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Idss |
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ȼɵɯɨɞɧɚɹ ɟɦɤɨɫɬɶ |
Cds vs. Vds |
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ȼɯɨɞɧɵɟ |
Ɍɚɛɥɢɰɚ ɡɧɚɱɟɧɢɣ Ciss, Coss, Crss |
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ɞɚɧɧɵɟ |
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Ɉɰɟɧɢɜɚɟɦɵɟ |
CBD, PB, FC, MJ |
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ɩɚɪɚɦɟɬɪɵ |
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Cds |
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CBD |
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Vds ·MJ |
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ɍɪɚɜɧɟɧɢɹ |
§ |
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¨ |
1 |
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¸ |
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© |
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PB ¹ |
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11. Ɇɨɞɟɥɢ ɷɥɟɤɬɪɨɧɧɵɯ ɤɨɦɩɨɧɟɧɬɨɜ ɢ ɜɵɱɢɫɥɟɧɢɟ ɢɯ ɩ ɪ ɦɟɬɪɨɜ |
515 |
Ɇɨɞɟɥɶ 3-ɝɨ ɭɪɨɜɧɹ (LEVEL 3) — ɷɬɨ ɭɫɨɜɟɪɲɟɧɫɬɜɨɜɚɧɧɚɹ ɦɨɞɟɥɶ Ȼɨɣ- ɥɹ, ɩɨɞɨɛɧɚɹ ɦɨɞɟɥɢ ɢɫɩɨɥɶɡɭɟɦɨɣ ɜ ɞɪɭɝɢɯ SPICE ɩɪɨɝɪɚɦɦɚɯ ɜ ɜɢɞɟ ɩɨɞ- ɫɯɟɦɵ. Ɉɧɚ, ɨɞɧɚɤɨ, ɧɟ ɹɜɥɹɟɬɫɹ ɦɚɤɪɨɨɩɪɟɞɟɥɟɧɢɟɦ ɢɥɢ ɩɨɞɫɯɟɦɨɣ, ɚ ɹɜɥɹ- ɟɬɫɹ ɩɨɥɧɨɰɟɧɧɨɣ ɜɫɬɪɨɟɧɧɨɣ ɜ Micro-Cap ɦɨɞɟɥɶɸ ɨɩɟɪɚɰɢɨɧɧɨɝɨ ɭɫɢɥɢɬɟ- ɥɹ. Ɉɧɚ ɦɨɞɟɥɢɪɭɟɬ ɨɝɪɚɧɢɱɟɧɢɟ ɫɤɨɪɨɫɬɢ ɧɚɪɚɫɬɚɧɢɹ ɢ ɫɩɚɞɚ, ɨɝɪɚɧɢɱɟɧɢɟ ɤɨɷɮɮɢɰɢɟɧɬɚ ɩɟɪɟɞɚɱɢ, ɜɵɯɨɞɧɨɟ ɫɨɩɪɨɬɢɜɥɟɧɢɟ ɧɚ ɩɨɫɬɨɹɧɧɨɦ ɢ ɩɟɪɟ- ɦɟɧɧɨɦ ɬɨɤɟ, ɧɚɩɪɹɠɟɧɢɹ ɢ ɬɨɤɢ ɫɦɟɳɟɧɢɹ ɧɭɥɹ, ɮɚɡɨɜɵɟ ɫɞɜɢɝɢ, ɩɨɥɨɫɭ ɩɪɨɩɭɫɤɚɧɢɹ, 3 ɜɢɞɚ ɞɢɮɮɟɪɟɧɰɢɚɥɶɧɵɯ ɜɯɨɞɨɜ, ɨɝɪɚɧɢɱɟɧɢɟ ɜɵɯɨɞɧɨɝɨ ɧɚ- ɩɪɹɠɟɧɢɟ ɢ ɨɝɪɚɧɢɱɟɧɢɟ ɬɨɤɚ.
Ɏɨɪɦɚɬ ɬɟɤɫɬɨɜɨɣ ɞɢɪɟɤɬɢɜɵ ɦɨɞɟɥɢ ɨɩɟɪɚɰɢɨɧɧɨɝɨ ɭɫɢɥɢɬɟɥɹ
.MODEL <ɢɦɹ ɦɨɞɟɥɢ> OPA([ɩɚɪɚɦɟɬɪɵ ɦɨɞɟɥɢ])
ɉɪɢɦɟɪɵ:
.MODEL LM709 OPA (A=45K VOFF=.001 SRP=250K GBW=1E6)
.MODEL LF155 OPA (LEVEL=2 TYPE=1 A=50K SRP=330K)
11.6.2.ɉɚɪɚɦɟɬɪɵ ɦɨɞɟɥɢ ɨɩɟɪɚɰɢɨɧɧɨɝɨ ɭɫɢɥɢɬɟɥɹ
Ɍɚ ɛ ɥ ɢ ɰ ɚ 1 1 . 1 1 . ɉɚɪɚɦɟɬɪɵ ɦɨɞɟɥɟɣ ɨɩɟɪɚɰɢɨɧɧɵɯ ɭɫɢɥɢɬɟɥɟɣ
Ɉɛɨɡɧɚɱɟɧɢɟ |
ɍɪɨɜɟɧɶ ɦɨɞɟɥɢLEVEL |
ɋɨɞɟɪɠɚɧɢɟ |
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Ɋɚɡɦɟɪɧɨɫɬɶ |
Ɂɧɚɱɟɧɢɟ ɩɨ ɭɦɨɥɱɚɧɢɸ |
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LEVEL |
1—3 |
ɍɪɨɜɟɧɶ ɦɨɞɟɥɢ (1 , 2, 3) |
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1 |
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TYPE |
3 |
Ɍɢɩ ɜɯɨɞɧɨɝɨ ɬɪɚɧɡɢɫɬɨɪɚ: |
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1 |
1 — NPN, 2 — PNP, 3 — JFET |
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ɋ |
3 |
ȿɦɤɨɫɬɶ ɤɨɪɪɟɤɰɢɢ |
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Ɏ |
30E-12 |
A |
1—3 |
Ʉɨɷɮɮɢɰɢɟɧɬ ɭɫɢɥɟɧɢɹ ɛɟɡ ɨɛɪɚɬɧɨɣ |
— |
2E5 |
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ɫɜɹɡɢ ɧɚ ɩɨɫɬɨɹɧɧɨɦ ɬɨɤɟ |
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ROUTAC |
1—3 |
ȼɵɯɨɞɧɨɟ ɫɨɩɪɨɬɢɜɥɟɧɢɟ |
ɩɨ |
ɩɟɪɟ- |
Ɉɦ |
75 |
ɦɟɧɧɨɦɭ ɬɨɤɭ |
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ROUTDC |
1—3 |
ȼɵɯɨɞɧɨɟ ɫɨɩɪɨɬɢɜɥɟɧɢɟ |
ɩɨ |
ɩɨɫɬɨ- |
Ɉɦ |
125 |
ɹɧɧɨɦɭ ɬɨɤɭ |
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VOFF |
3 |
ɇɚɩɪɹɠɟɧɢɟ ɫɦɟɳɟɧɢɹ ɧɭɥɹ |
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ȼ |
0.001 |
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IOFF |
3 |
Ɋɚɡɧɨɫɬɶ ɜɯɨɞɧɵɯ ɬɨɤɨɜ ɫɦɟɳɟɧɢɹ |
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1E-9 |
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SRP |
2, 3 |
Ɇɚɤɫɢɦɚɥɶɧɚɹ ɫɤɨɪɨɫɬɶ ɧɚɪɚɫɬɚɧɢɹ |
ȼ/ɫ |
5E5 |
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ɜɵɯɨɞɧɨɝɨ ɧɚɩɪɹɠɟɧɢɹ |
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SRN |
2, 3 |
Ɇɚɤɫɢɦɚɥɶɧɚɹ ɫɤɨɪɨɫɬɶ |
ɫɩɚɞɚ ɜɵ- |
ȼ/ɫ |
5E5 |
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ɯɨɞɧɨɝɨ ɧɚɩɪɹɠɟɧɢɹ |
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IBIAS |
3 |
ȼɯɨɞɧɨɣ ɬɨɤ ɫɦɟɳɟɧɢɹ |
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1E-7 |
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VCC |
3 |
ɉɨɥɨɠɢɬɟɥɶɧɨɟ ɧɚɩɪɹɠɟɧɢɟ ɩɢɬɚɧɢɹ |
ȼ |
15 |
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VEE |
3 |
Ɉɬɪɢɰɚɬɟɥɶɧɨɟ ɧɚɩɪɹɠɟɧɢɟ ɩɢɬɚɧɢɹ |
ȼ |
-15 |
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518 |
ɉɪɨɝɪ ɦɦ ɫɯɟɦɨɬɟɯɧɢɱɟɫɤɨɝɨ ɦɨɞɟɥɢɪɨɜ ɧɢɹ Micro-Cap. ȼɟɪɫɢɢ 9, 10 |
Ɋɢɫ. 11.17. ɗɤɜɢɜɚɥɟɧɬɧɚɹ ɫɯɟɦɚ ɦɨɞɟɥɢ Ɉɍ ɫ ɩɨɥɟɜɵɦɢ ɬɪɚɧɡɢɫɬɨɪɚɦɢ ɧɚ ɜɯɨɞɟ
LEVEL3
11.6.3. ɍɪɚɜɧɟɧɢɹ ɦɨɞɟɥɢ ɨɩɟɪɚɰɢɨɧɧɨɝɨ ɭɫɢɥɢɬɟɥɹ
T — ɬɟɦɩɟɪɚɬɭɪɚ ɤɪɢɫɬɚɥɥɚ ɜ ɝɪɚɞɭɫɚɯ Ʉɟɥɶɜɢɧɚ
VT kT — ɬɟɦɩɟɪɚɬɭɪɧɵɣ ɩɨɬɟɧɰɢɚɥ q
BETA1 — ɩɪɹɦɨɟ beta ɬɪɚɧɡɢɫɬɨɪɚ Q1 BETA2 — ɩɪɹɦɨɟ beta ɬɪɚɧɡɢɫɬɨɪɚ Q2 BJT1IS — ɬɨɤ ɧɚɫɵɳɟɧɢɹ (IS) ɬɪɚɧɡɢɫɬɨɪɚ Q1 BJT2IS — ɬɨɤ ɧɚɫɵɳɟɧɢɹ (IS) ɬɪɚɧɡɢɫɬɨɪɚ Q2 V(A1) — ɧɚɩɪɹɠɟɧɢɟ ɜ ɭɡɥɟ A1
V(A2) — ɧɚɩɪɹɠɟɧɢɟ ɜ ɭɡɥɟ A2
V(CM) — ɧɚɩɪɹɠɟɧɢɟ ɜ ɭɡɥɟ CM
I(VS1) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VS1
I(VC) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VC
I(VE) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VE
I(VLP) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VLP
I(VLN) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VLN V(VCC) — ɧɚɩɪɹɠɟɧɢɟ ɧɚ ɢɫɬɨɱɧɢɤɟ VCC V(VEE) — ɧɚɩɪɹɠɟɧɢɟ ɧɚ ɢɫɬɨɱɧɢɤɟ VEE I(VS2) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ VS2
I(GA) — ɬɨɤ ɱɟɪɟɡ ɢɫɬɨɱɧɢɤ GA
