Hi, I'm new to SPICE. I'm using MacSpice to simulate a TL072 amplifier circuit. The following is my code:

OPAMP AMPLIFIER
*
VS 1 0 AC 1 SIN (0 1 40Hz)
*
R2 2 0 430
R1 2 5 15K
C1 2 5 1n
XOP 1 2 3 4 5 TL072
VPOS 3 0 5
VNEG 0 4 5
*
* TL072 OPERATIONAL AMPLIFIER "MACROMODEL" SUBCIRCUIT
* CREATED USING PARTS RELEASE 4.01 ON 06/16/89 AT 13:08
* (REV N/A) SUPPLY VOLTAGE: +/-15V
* CONNECTIONS: NON-INVERTING INPUT
* | INVERTING INPUT
* | | POSITIVE POWER SUPPLY
* | | | NEGATIVE POWER SUPPLY
* | | | | OUTPUT
* | | | | |
.SUBCKT TL072 1 2 3 4 5
*
C1 11 12 3.498E-12
C2 6 7 15.00E-12
DC 5 53 DX
DE 54 5 DX
DLP 90 91 DX
DLN 92 90 DX
DP 4 3 DX
EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5
FB 7 99 POLY(5) VB VC VE VLP VLN 0 4.715E6 -5E6 5E6 5E6 -5E6
GA 6 0 11 12 282.8E-6
GCM 0 6 10 99 8.942E-9
ISS 3 10 DC 195.0E-6
HLIM 90 0 VLIM 1K
J1 11 2 10 JX
J2 12 1 10 JX
R2 6 9 100.0E3
RD1 4 11 3.536E3
RD2 4 12 3.536E3
RO1 8 5 150
RO2 7 99 150
RP 3 4 2.143E3
RSS 10 99 1.026E6
VB 9 0 DC 0
VC 3 53 DC 2.200
VE 54 4 DC 2.200
VLIM 7 8 DC 0
VLP 91 0 DC 25
VLN 0 92 DC 25
.MODEL DX D(IS=800.0E-18)
.MODEL JX PJF(IS=15.00E-12 BETA=270.1E-6 VTO=-1)
.ENDS
*
* ANALYSIS
.AC DEC 100 1 100K
.PROBE
.END
*************************************
As I simulated it, it prompt this message:

Circuit: OPAMP AMPLIFIER
Note: MacSpice converts spice2 'polys' to spice3 'B' sources, use 'listing physical expand' to inspect the result(s).
Note: Spice2 'poly' source translated at line 30.
Note: Spice2 'poly' source translated at line 31.
On line 52: .model op:jx pjf(is=15.00e-12 beta=270.1e-6 vto=-1)
Missing level parameter - using level=1
On line 57: .probe
Warning: .probe control card ignored.

I wonder what's wrong with the .probe? Do I miss something? And what does it mean "Missing level parameter - using level=1"? Can anyone please shed some light on these problems? Thanks in advance.

Btw, I got the TL072 model from Internet.

 

Hi,

I just found that .Probe is a PSPICE command, and MacSpice does not recognize it. So I change to this:

.PLOT dB(V(5))

And I've also added the level parameter (level=1) to the model. But nothing was generated other than this message:

Note: MacSpice converts spice2 'polys' to spice3 'B' sources,
use 'listing physical expand' to inspect the result(s).
Note: Spice2 'poly' source translated at line 30.
Note: Spice2 'poly' source translated at line 31.

So I typed "listing physical expand", and got these:

OPAMP AMPLIFIER

1 : OPAMP AMPLIFIER
3 : vs 1 0 ac 1 sin(0 1 40hz)
5 : r2 2 0 430
6 : r1 2 5 15k
7 : c1 2 5 1n
23 : cp:1 op:11 op:12 3.498e-12
24 : cp:2 op:6 op:7 15.00e-12
25 : dp:c 5 op:53 op:dx
26 : dp:e op:54 5 op:dx
27 : dp:lp op:90 op:91 op:dx
28 : dp:ln op:92 op:90 op:dx
29 : dp 4 3 op:dx
30 : * egnd 99 0 poly(2) (3,0) (4,0) 0 .5 .5
30 : bp:sp2_egnd op:99 0 v=(0+v(3)*.5+v(4)*.5)
31 : * fb 7 99 poly(5) vb vc ve vlp vln 0 4.715e6 -5e6 5e6 5e6 -5e6
31 : bp:sp2_fb op:7 op:99 i=(0+i(vp:b)*4.715e6+i(vp:c)*(-5e6)+i(vp:e)*5e6+i(vp:lp)*5e6+i(vp:ln)*(-5e6))
32 : gp:a op:6 0 op:11 op:12 282.8e-6
33 : gp:cm 0 op:6 op:10 op:99 8.942e-9
34 : ip:ss 3 op:10 dc 195.0e-6
-- hit return for more, ? for help --
35 : hp:lim op:90 0 vp:lim 1k
36 : jp:1 op:11 2 op:10 op:jx
37 : jp:2 op:12 1 op:10 op:jx
38 : rp:2 op:6 op:9 100.0e3
39 : rp:d1 4 op:11 3.536e3
40 : rp:d2 4 op:12 3.536e3
41 : rp1 op:8 5 150
42 : rp2 op:7 op:99 150
43 : rp 3 4 2.143e3
44 : rp:ss op:10 op:99 1.026e6
45 : vp:b op:9 0 dc 0
46 : vp:c 3 op:53 dc 2.200
47 : vp:e op:54 4 dc 2.200
48 : vp:lim op:7 op:8 dc 0
49 : vp:lp op:91 0 dc 25
50 : vp:ln 0 op:92 dc 25
51 : .model op:dx d(is=800.0e-18)
52 : .model op:jx pjf(is=15.00e-12 beta=270.1e-6 vto=-1 level=1)
9 : vpos 3 0 5
10 : vneg 0 4 5
56 : .ac dec 100 1 100k

The problem is, I have no idea where and what to figure out in the codes. How can I plot the frequency response for the circuit?

Thanks.

 

Can someone please help?