Hi,
The pspice model of the opa132 (that I downloaded as Jan 27, 2104) has a strange open loop gain, the phase is rising. I have not encountered this problem with other pspice models of Texas Instruments amplifiers.
Could you please check the model ?
Thanks
Francois,
I believe you are not simulating open-loop gain properly; AOL needs to be tested using the inverting configuration and post-process using: AOL=Vout/Vos. This is shown in the TINA-TI Reference design schematic - see below.
The results are shown below - no phase rising you allude to.
If you do simulate AOL as outlined above and continue to have the issue, this may be related to a problem created during scrambling of the netlist. Attached please find original netlist for OPA132 macro-model - please use it for your simulation.
I'am actually using LTspice. I have already imported the "pspice" models of OPA657, OPA847, … without trouble.
With the model you sent here is the result I obtain the following curve. The phase does not behave well, and the unity gain is not ok. If I change the op amp with opa627 pspice model everything is ok.
I have not done any particular math, and the vertical scale is in dB log.
I add a figure with the same circuit, except that the op amp which is an op627, simultaneous with the op132.
I have used the models of opa847, opa657, opa827, ad797, ...
thanks for your help,
I've modified the netlist, especially the vswitch instructions according to the lines of www.intusoft.com/Pspice2IsSpice.htm. Here are the new netlist and simulation result, looks ok with ltspice.
* OPA132 PSpice Model (PSpice format)
********************************************
** This file was created by TINA **
** (c) 1996-2006 DesignSoft, Inc. **
********************************************
* OPA132 REV A CREATED BY MAREK LIS
* GREEN-LIS MACRO-MODEL ARCHITECTURE
* DECEMBER 20, 2013
*
* THIS MACROMODEL HAS BEEN OPTIMIZED TO MODEL THE AC, DC, NOISE, AND TRANSIENT RESPONSE PERFORMANCE WITHIN
* THE DEVICE DATA SHEET SPECIFIED LIMITS. CORRECT OPERATION OF THIS MACROMODEL HAS BEEN VERIFIED ON DESIGNSOFT
* TINA VERSION 7.0.80.224 SF. FOR HELP WITH OTHER ANALOG SIMULATION SOFTWARE, PLEASE CONSULT THE SOFTWARE SUPPLIER.
*
* COPYRIGHT 2011 BY TEXAS INSTRUMENTS CORPORATION
*
* BEGIN MODEL OPA132
*
*GREEN-LIS MACRO-MODEL SIMULATED TYPICAL PARAMETERS:
*
*OPEN LOOP GAIN AND PHASE VS FREQUENCY WITH RL AND CL EFFECTS
*INPUT COMMON MODE REJECTION WITH FREQUENCY
*POWER SUPPLY REJECTION WITH FREQUENCY
*INPUT IMPEDANCE VS FREQUENCY
*OUTPUT IMPEDANCE VS FREQUENCY AND OUTPUT CURRENT
*INPUT VOLTAGE NOISE VS FREQUENCY
*INPUT CURRENT NOISE VS FREQUENCY
*OUTPUT VOLTAGE SWING VS OUTPUT CURRENT
*SHORT-CIRCUIT OUTPUT CURRENT
*QUIESCENT CURRENT VS SUPPLY VOLTAGE
*SETTLING TIME VS CAPACITIVE LOAD
*SLEW RATE
*SMALL SIGNAL OVERSHOOT VS CAPACITIVE LOAD
*LARGE SIGNAL RESPONSE
*OVERLOAD RECOVERY TIME
*INPUT BIAS CURRENT
*INPUT VOLTAGE OFFSET
*INPUT COMMON MODE RANGE
*OUTPUT CURRENT COMING THROUGH THE SUPPLY RAILS
* CONNECTIONS: NON-INVERTING INPUT
* | INVERTING INPUT
* | | POSITIVE POWER SUPPLY
* | | | NEGATIVE POWER SUPPLY
* | | | | OUTPUT
* | | | | |
.SUBCKT OPA132 88 89 91 92 93
V7 15 56 2.8
Vos 28 47 -100.1U
V11 58 59 100M
V10 60 61 100M
V6 11 66 10
V5 67 11 10
V4 63 65 10
V1 64 62 10
V9 78 16 2.8
IS2 91 28 5P
IS1 91 92 4M
IS3 52 92 -7P
V3 82 11 40
V2 11 83 47
R37 29 30 100MEG
C4 31 29 1.00000000000000E-0016 IC=0
C1 11 32 1N IC=0
EVCVS1 10 11 7 33 -1
R38 32 34 10
VCCVS2_in 33 8
HCCVS2 34 11 VCCVS2_in 1K
XU7 32 11 33 30 VC_RES_0
C25 10 31 2P IC=0
C24 10 9 90N IC=0
R32 9 31 10.5K
R31 31 30 100MEG
R30 10 31 500K
EVCVS2 30 11 11 31 20MEG
S14 9 10 12 11 S_VSWITCH_1
S13 10 9 11 13 S_VSWITCH_2
XR105 14 11 RNOISE_FREE_0
XR105_2 35 11 RNOISE_FREE_1
R24 11 20 1K
R17 11 21 1K
R11 11 36 1K
R10 11 37 1K
R9 11 12 1K
R8 11 13 1K
L4 11 38 17M IC=0
L1 39 11 1F IC=0
R2 39 40 1
GVCCS8 11 40 11 41 1
XR109 42 11 RNOISE_FREE_1
C3 42 11 3F IC=0
GVCCS4 11 42 25 11 1U
C2 43 11 3F IC=0
XR109_2 43 11 RNOISE_FREE_2
GVCCS3 11 43 42 11 1M
R4 44 23 10M
CinDiff 45 46 2P IC=0
CinpCM 46 11 5P IC=0
CinnCM 11 45 5P IC=0
XIn11 47 45 FEMT_0
L2 48 11 1F IC=0
XR109_3 25 11 RNOISE_FREE_1
XR109_4 49 11 RNOISE_FREE_1
XVn11 46 47 VNSE_0
XU14 50 11 51 52 VCVS_LIMIT_0
L3 53 11 350U IC=0
R1 48 50 1
GVCCS2 11 50 11 54 1
XU13 15 55 IDEAL_D_0
EVCVS5 56 11 92 11 1
C11 49 11 4F IC=0
XR109_5 24 11 RNOISE_FREE_2
GVCCS12 11 25 49 11 1U
XU5 17 11 91 18 VCVS_LIMIT_1
XU6 11 17 19 92 VCVS_LIMIT_2
C15 91 92 10P IC=0
C22 11 22 1P IC=0
R29 22 14 1
C23 11 26 1P IC=0
C9 57 11 10P IC=0
R26 57 17 10
C21 11 12 1P IC=0
C20 11 13 1P IC=0
C19 20 11 1P IC=0
C17 21 11 1P IC=0
C16 11 36 1P IC=0
C12 37 11 1P IC=0
R13 7 26 1
R36 26 61 1M
R35 26 59 1M
S12 62 58 20 11 S_VSWITCH_3
S11 60 63 11 21 S_VSWITCH_4
R34 26 64 1K
R33 26 65 1K
S10 67 14 22 11 S_VSWITCH_5
S9 14 66 11 22 S_VSWITCH_6
R25 68 20 1
R19 69 21 1
R16 70 36 1
R14 71 37 1
R12 72 12 1
R7 73 13 1
R5 74 24 10M
R6 75 14 10M
R15 0 11 100MEG
C13 24 11 1F IC=0
GVCCS1 11 24 43 11 1M
GIsinking 92 11 76 11 1M
GIsourcing 91 11 77 11 1M
R23 76 11 10K
S7 17 76 57 11 S_VSWITCH_7
R21 11 77 10K
S8 17 77 57 11 S_VSWITCH_8
S4 75 72 12 11 S_VSWITCH_9
S3 73 75 11 13 S_VSWITCH_10
XU3 63 27 73 11 VCVS_LIMIT_3
XU1 62 27 72 11 VCVS_LIMIT_3
S2 44 68 20 11 S_VSWITCH_11
S1 69 44 11 21 S_VSWITCH_12
XU8 28 91 IDEAL_D_1
XU12 92 28 IDEAL_D_1
EVCVS6 78 11 91 11 1
R22 79 55 100
EVCVS4 79 11 28 11 1
XU2 55 16 IDEAL_D_0
S6 74 70 36 11 S_VSWITCH_13
S5 71 74 11 37 S_VSWITCH_14
XU26 55 52 11 80 VCCS_LIMIT_0
XU4 80 11 11 14 VCCS_LIMIT_1
LPSR 81 11 3.16M IC=0
XVCVSPSRR 40 11 51 45 VCVS_LIMIT_4
XU22 82 17 69 11 VCVS_LIMIT_5
XU21 83 17 68 11 VCVS_LIMIT_5
XU20 19 93 70 11 VCVS_LIMIT_5
XU19 18 93 71 11 VCVS_LIMIT_6
XU11 92 52 IDEAL_D_1
XU10 52 91 IDEAL_D_1
C10 23 11 1F IC=0
C5 25 11 4F IC=0
XR109_6 23 11 RNOISE_FREE_2
GVCCS15 11 23 24 11 1M
GVCCS10 11 49 35 11 1U
R20 88 46 100
R18 89 45 100
GVCCS6 11 35 27 11 1U
XR102 84 85 RNOISE_FREE_1
XR101 86 84 RNOISE_FREE_1
C6 84 0 1 IC=0
XR105_3 27 11 RNOISE_FREE_1
XR103 11 80 RNOISE_FREE_1
EVCVS34 11 0 84 0 1
RPSR 81 41 1
GVCCS11 11 41 91 92 5U
RCM 53 54 1
EVCVS29 86 0 91 0 1
EVCVS28 85 0 92 0 1
GVCCS7 11 54 28 11 10U
VCCVS1_in 8 93
HCCVS1 17 11 VCCVS1_in 1K
GVCCS5 11 27 14 11 1U
Ccc 14 11 3.8U IC=0
EVCVS3 7 11 23 11 1
.MODEL S_VSWITCH_1 SW (RON=1 ROFF=100MEG VT=0 VH=100M)
.MODEL S_VSWITCH_2 SW (RON=1 ROFF=100MEG VT=0 VH=100M)
.MODEL S_VSWITCH_3 SW (RON=1 ROFF=10MEG VT=0 VH=100M)
.MODEL S_VSWITCH_4 SW (RON=1 ROFF=10MEG VT=0 VH=100M)
.MODEL S_VSWITCH_5 SW (RON=10M ROFF=100MEG VT=10 VH=140)
.MODEL S_VSWITCH_6 SW (RON=10M ROFF=100MEG VT=10 VH=140)
.MODEL S_VSWITCH_7 SW (RON=1M ROFF=10MEG VT=-5M VH=-5M)
.MODEL S_VSWITCH_8 SW (RON=1M ROFF=10MEG VT=5M VH=5M)
.MODEL S_VSWITCH_9 SW (RON=1 ROFF=10MEG VT=0 VH=1)
.MODEL S_VSWITCH_10 SW (RON=1 ROFF=10MEG VT=0 VH=1)
.MODEL S_VSWITCH_11 SW (RON=1 ROFF=1G VT=0 VH=10)
.MODEL S_VSWITCH_12 SW (RON=1 ROFF=1G VT=0 VH=10)
.MODEL S_VSWITCH_13 SW (RON=1 ROFF=1G VT=0 VH=10)
.MODEL S_VSWITCH_14 SW (RON=1 ROFF=1G VT=0 VH=10)
.ENDS
*VOLTAGE CONTROLLED RESISTOR
.SUBCKT VC_RES_0 1 2 3 4
* vcp vcm RES1 RES2
ERES 3 40 VALUE = {(I(VSENSE) * (ABS(V(1,2))*ABS(V(1,2))*0.000352-0.02359*ABS(V(1,2))+0.5922))*140000*24200*50*2/414500}
VSENSE 40 4 DC 0
.ENDS VC_RES_0
* NOISELESS RESISTOR
.SUBCKT RNOISE_FREE_0 1 2
*ROHMS = VALUE IN OHMS OF NOISELESS RESISTOR
.PARAM ROHMS=1E4
ERES 1 3 VALUE = { I(VSENSE) * ROHMS }
RDUMMY 30 3 1
VSENSE 30 2 DC 0V
.ENDS RNOISE_FREE_0
* NOISELESS RESISTOR
.SUBCKT RNOISE_FREE_1 1 2
*ROHMS = VALUE IN OHMS OF NOISELESS RESISTOR
.PARAM ROHMS=1E6
ERES 1 3 VALUE = { I(VSENSE) * ROHMS }
RDUMMY 30 3 1
VSENSE 30 2 DC 0V
.ENDS RNOISE_FREE_1
* NOISELESS RESISTOR
.SUBCKT RNOISE_FREE_2 1 2
*ROHMS = VALUE IN OHMS OF NOISELESS RESISTOR
.PARAM ROHMS=1E3
ERES 1 3 VALUE = { I(VSENSE) * ROHMS }
RDUMMY 30 3 1
VSENSE 30 2 DC 0V
.ENDS RNOISE_FREE_2
* BEGIN PROG NSE FEMTO AMP/RT-HZ
.SUBCKT FEMT_0 1 2
* BEGIN SETUP OF NOISE GEN - FEMPTOAMPS/RT-HZ
* INPUT THREE VARIABLES
* SET UP INSE 1/F
* FA/RHZ AT 1/F FREQ
.PARAM NLFF=.001
* FREQ FOR 1/F VAL
.PARAM FLWF=0.001
* SET UP INSE FB
* FA/RHZ FLATBAND
.PARAM NVRF=0.1
* END USER INPUT
* START CALC VALS
.PARAM GLFF={PWR(FLWF,0.25)*NLFF/1164}
.PARAM RNVF={1.184*PWR(NVRF,2)}
.MODEL DVNF D KF={PWR(FLWF,0.5)/1E11} IS=1.0E-16
* END CALC VALS
I1 0 7 10E-3
I2 0 8 10E-3
D1 7 0 DVNF
D2 8 0 DVNF
E1 3 6 7 8 {GLFF}
R1 3 0 1E9
R2 3 0 1E9
R3 3 6 1E9
E2 6 4 5 0 10
R4 5 0 {RNVF}
R5 5 0 {RNVF}
R6 3 4 1E9
R7 4 0 1E9
G1 1 2 3 4 1E-6
C1 1 0 1E-15
C2 2 0 1E-15
C3 1 2 1E-15
.ENDS
* END PROG NSE FEMTO AMP/RT-HZ
* BEGIN PROG NSE NANO VOLT/RT-HZ
.SUBCKT VNSE_0 1 2
* BEGIN SETUP OF NOISE GEN - NANOVOLT/RT-HZ
* INPUT THREE VARIABLES
* SET UP VNSE 1/F
* NV/RHZ AT 1/F FREQ
.PARAM NLF=83
* FREQ FOR 1/F VAL
.PARAM FLW=1
* SET UP VNSE FB
* NV/RHZ FLATBAND
.PARAM NVR=7.5
* END USER INPUT
* START CALC VALS
.PARAM GLF={PWR(FLW,0.25)*NLF/1164}
.PARAM RNV={1.184*PWR(NVR,2)}
.MODEL DVN D KF={PWR(FLW,0.5)/1E11} IS=1.0E-16
* END CALC VALS
I1 0 7 10E-3
I2 0 8 10E-3
D1 7 0 DVN
D2 8 0 DVN
E1 3 6 7 8 {GLF}
R1 3 0 1E9
R2 3 0 1E9
R3 3 6 1E9
E2 6 4 5 0 10
R4 5 0 {RNV}
R5 5 0 {RNV}
R6 3 4 1E9
R7 4 0 1E9
E3 1 2 3 4 1
C1 1 0 1E-15
C2 2 0 1E-15
C3 1 2 1E-15
.ENDS
* END PROG NSE NANOV/RT-HZ
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_0 vcp vcm VOUTp VOUTm
*
.PARAM GAIN = 1
.PARAM VPOS = 10M
.PARAM VNEG = -10M
E1 VOUTp VOUTm VALUE={LIMIT(GAIN*V(vcp,vcm),VNEG,VPOS)}
.ENDS VCVS_LIMIT_0
*TG IDEAL DIODE
.SUBCKT IDEAL_D_0 A C
D1 A C DNOM
.MODEL DNOM D (TT=10P CJO=1E-18 IS=1E-15 RS=1E-3)
.ENDS IDEAL_D_0
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_1 vcp vcm VOUTp VOUTm
*
E1 VOUTp VOUTm TABLE {ABS(V(vcp,vcm))} = (0.0,0.9)(20,2.0)(30,2.6)(39.9,3.7)
.ENDS VCVS_LIMIT_1
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_2 vcp vcm VOUTp VOUTm
*
E1 VOUTp VOUTm TABLE {ABS(V(vcp,vcm))} = (0.0,0.3)(3,0.3)(5,0.5)(6,0.9)(46.9,3.3)
.ENDS VCVS_LIMIT_2
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_3 vcp vcm VOUTp VOUTm
*
.PARAM GAIN = 100
.PARAM VPOS = 6000
.PARAM VNEG = -6000
E1 VOUTp VOUTm VALUE={LIMIT(GAIN*V(vcp,vcm),VNEG,VPOS)}
.ENDS VCVS_LIMIT_3
*TG IDEAL DIODE
.SUBCKT IDEAL_D_1 A C
D1 A C DNOM
.MODEL DNOM D (TT=10P CJO=1E-18 IS=1E-15 RS=1E-3)
.ENDS IDEAL_D_1
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCCS_LIMIT_0 vcp vcm IOUTp IOUTm
*
.PARAM GAIN = 1M
.PARAM IPOS = .5
.PARAM INEG = -.5
G1 IOUTp IOUTm VALUE={LIMIT(GAIN*V(vcp,vcm),INEG,IPOS)}
.ENDS VCCS_LIMIT_0
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCCS_LIMIT_1 vcp vcm IOUT+ IOUT-
*
.PARAM GAIN = 200M
.PARAM IPOS = 76
.PARAM INEG = -76
G1 IOUT+ IOUT- VALUE={LIMIT(GAIN*V(vcp,vcm),INEG,IPOS)}
.ENDS VCCS_LIMIT_1
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_4 vcp vcm VOUTp VOUTm
*
.PARAM GAIN = -1
.PARAM VPOS = 10M
.PARAM VNEG = -10M
E1 VOUTp VOUTm VALUE={LIMIT(GAIN*V(vcp,vcm),VNEG,VPOS)}
.ENDS VCVS_LIMIT_4
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_5 VCp VCm VOUTp VOUTm
*
.PARAM GAIN = 100
.PARAM VPOS = 5000
.PARAM VNEG = -5000
E1 VOUTp VOUTm VALUE={LIMIT(GAIN*V(VCp,VCm),VNEG,VPOS)}
.ENDS VCVS_LIMIT_5
*VOLTAGE CONTROLLED SOURCE WITH LIMITS
.SUBCKT VCVS_LIMIT_6 vcp vcm VOUTp VOUTm
*
.PARAM GAIN = 100
.PARAM VPOS = 5000
.PARAM VNEG = -5000
E1 VOUTp VOUTm VALUE={LIMIT(GAIN*V(vcp,vcm),VNEG,VPOS)}
.ENDS VCVS_LIMIT_6
.END
