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Hi, I am working on a non-inverting operational amplifier circuit simulation with LTspice. I am using spice code of opa694 as op-amp but there is something wrong because It gives me approximately 12V as output signal which is too high than expected. When I draw the circuit with voltage dependent voltage source instead of opa694 I took the output voltage as microvolt level which is expected. Might be any problem with this opamp code or something else? I am adding LTspice netlist below. If you please help me, It will be very useful.
* opa694 .asc V1 0 N001 PWL(0 0 10n 2u 20n 0 30n 0) D9 N001 0 D D10 0 N001 D R30 0 N001 200 R31 N003 N004 3.6K R32 0 N003 470 R35 N004 0 100 XIC1 N001 N004 N005 N002 N003 opa694 CD1 N005 0 22nF CD2 0 N002 22nF Vee2 0 N002 {V} Vcc5 N005 0 {V} .model D D .lib C:\Program Files (x86)\LTC\LTspiceIV\lib\cmp\standard.dio .PARAM V=5 .tran 0 300n 0 *.subckt D 1 2 ******************************************* * *PMLL4448 * *NXP Semiconductors * *High-speed diodes * * * * * * * * * * * *VRRM = 100V *IFRM = 450 mA *trr = 4ns * * *Package pinning does not match Spice model pinning. *Package: SOD80C * *Package Pin 1 : Cathode *Package Pin 2 : Anode * * * * *Simulator: PSPICE * ******************************************* *# .SUBCKT PMLL4448 1 2 * * The resistor R1 does not reflect * a physical device. Instead it * improves modeling in the reverse * mode of operation. * R1 1 2 5.827E+9 D1 1 2 PMLL4448 * .MODEL PMLL4448 D + IS = 4.352E-9 + N = 1.906 + BV = 110 + IBV = 0.0001 + RS = 0.6458 + CJO = 7.048E-13 + VJ = 0.869 + M = 0.03 + FC = 0.5 + TT = 3.48E-9 .ENDS * .PARAM E=1000000 .lib opa694.lib * 3 * 2 .backanno .end
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Hi, I cannot send you .asc file because I could not upload the system It is not allowed so I send you .cir file. It also works. Thank you for your help.opa694 .cir
Zehra,
TI cannot support LTSpice due to the EULA that LT has placed on the tool. We provide PSpice models that should work in simulators that fully support PSpice model constructs. We also provide TINA-TI models and reference designs for many products.
I am attaching the TINA-TI reference design .cir file that has been tested and functions correctly in PSpice.
We have verified the PSpice model in both TINA-TI and PSpice.