inara1(2018/09/05 Wed 02:25) [ 編集 ] [ 返信 ]
LMC662はLTspiceで使っています。添付図はLMC662を使った電流−電圧変換回路です。
LMC662のSPICEモデル(subフォルダに保存する)と記号ファイル(symフォルダに保存する)を以下に添付します。ファイル名はSPICEモデルはLMC662.lib、記号ファイルはLMC662.asyとしてください。
(LMC662のSPICEモデル)
* LMC662 CMOS Dual Operational Amplifier
* ///////////////////////////////////////////
*
* Connections: Non-inverting input
* | Inverting input
* | | Positive power supply
* | | | Negative power supply
* | | | | Output
* | | | | |
* | | | | |
.SUBCKT LMC662A 1 2 99 50 28
* CAUTION: SET .OPTIONS GMIN=1E-16 TO CORRECTLY MODEL INPUT BIAS CURRENT.
*
* Features:
* Operates from single supply
* Rail-to-rail output swing
* Low offset voltage (max) = 3mV
* Ultra low input current = 2fA
* Slew rate = 1.1V/uS
* Gain-bandwidth product = 1.4 MHz
* Low supply current = 375uA/Amplifier
*
* NOTE: - Model is for single device only and simulated
* supply current is 1/2 of total device current.
* - Noise is not modeled.
* - Asymmetrical gain is not modeled.
*
CI1 1 50 2P
CI2 2 50 2P
* 1.4 Hz pole capacitor
C3 98 9 11.35N
* 2.95 MHz pole capacitor
C4 6 5 4.93P
* Drain-substrate capacitor
C6 50 4 10P
* 35 MHz pole capacitor
C7 98 11 4.54F
DP1 1 99 DA
DP2 50 1 DX
DP3 2 99 DB
DP4 50 2 DX
D1 9 8 DX
D2 10 9 DX
D3 15 20 DX
D4 21 15 DX
D5 26 24 DX
D6 25 27 DX
D7 22 99 DX
D8 50 22 DX
D9 0 14 DX
D10 12 0 DX
EH 97 98 99 49 1.0
EN 0 96 0 50 1.0
* Input offset voltage -|
EOS 7 1 POLY(1) 16 49 3M 1
EP 97 0 99 0 1.0
E1 97 19 99 15 1.0
* Sourcing load +Vs current
F1 99 0 VA2 1
* Sinking load -Vs current
F2 0 50 VA3 1
F3 13 0 VA1 1
G1 98 9 5 6 0.1
G2 98 11 9 49 1U
G3 98 15 11 49 1U
* DC CMRR
G4 98 16 POLY(2) 1 49 2 49 0 3.54E-8 3.54E-8
I1 99 4 48.19U
I2 99 50 308.1U
* Load dependent pole
L1 22 28 40.4U
* CMR lead
L2 16 17 7.95M
M1 5 2 4 99 MX
M2 6 7 4 99 MX
R3 5 50 5.47K
R4 6 50 5.47K
R5 98 9 1E7
R8 99 49 133.3K
R9 49 50 133.3K
R12 98 11 1E6
R13 98 17 1K
* -Rout
R16 23 24 75
* +Rout
R17 23 25 70
* +Isc slope control
R18 20 29 144.6K
* -Isc slope control
R19 21 30 185K
R21 98 15 1E6
R22 22 28 900
VA1 19 23 0V
VA2 14 13 0V
VA3 13 12 0V
V2 97 8 0.721V
V3 10 96 0.721V
V4 29 22 0.63V
V5 22 30 0.63V
V6 26 22 0.63V
V7 22 27 0.63V
.MODEL DA D (IS=1.3E-14)
.MODEL DB D (IS=1.2E-14)
.MODEL DX D (IS=1.0E-14)
.MODEL MX PMOS (VTO=-2.45 KP=7.0547E-4)
.ENDS
*$
(LMC662の記号ファイル)
Version 4
SymbolType CELL
LINE Normal -32 32 32 64
LINE Normal -32 96 32 64
LINE Normal -32 32 -32 96
LINE Normal -28 48 -20 48
LINE Normal -28 80 -20 80
LINE Normal -24 84 -24 76
LINE Normal 0 32 0 48
LINE Normal 0 96 0 80
LINE Normal 4 44 12 44
LINE Normal 8 40 8 48
LINE Normal 4 84 12 84
WINDOW 0 16 32 Left 0
WINDOW 3 16 96 Left 0
SYMATTR Value LMC662A
SYMATTR Prefix X
SYMATTR Description LMC662A/NS
SYMATTR SpiceModel LMC662.lib
SYMATTR Value2 LMC662A
PIN -32 80 NONE 0
PINATTR PinName In+
PINATTR SpiceOrder 1
PIN -32 48 NONE 0
PINATTR PinName In-
PINATTR SpiceOrder 2
PIN 0 32 NONE 0
PINATTR PinName V+
PINATTR SpiceOrder 3
PIN 0 96 NONE 0
PINATTR PinName V-
PINATTR SpiceOrder 4
PIN 32 64 NONE 0
PINATTR PinName OUT
PINATTR SpiceOrder 5