Application Report
SLOA038 - October 1999
THS3001 SPICE Model Performance
Jim Karki
Mixed Signal Products
ABSTRACT
This application report outlines the SPICE model of the THS3001 high-speed monolithic operational
amplifier. General information about the model file structure, performance comparison, model listing,
and a brief comment about symbols are included. The listing can be copied and pasted into an ASCII
editor, or it can be down loaded by visiting the THS3001 product folder at
http://www.ti.com/sc/docs/products/analog/THS3001.html.
Contents
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
File Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4
Schematic and Subcircuit Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5
About Building a Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
List of Figures
1 Output Voltage (pk) vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Output Voltage (pk) vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Supply Current vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Supply Current vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Bias Current vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Bias Curent vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Input Offset Voltage vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Input Offset Voltage vs Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Common-Mode Rejection Ratio vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Common-Mode Rejection Ratio vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11 Power Supply Rejection Ratio vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12 Power Supply Rejection Ratio vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13 Equivalent Input Voltage Noise vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 Equivalent Input Current Noise vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15 Slew Rate vs Output Voltage (pp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16 Slew Rate vs Output Voltage (pp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
17 2nd Harmonic vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18 2nd Harmonic vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19 3rd Harmonic vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20 3rd Harmonic vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
4
4
4
4
4
5
5
5
5
6
6
6
6
7
7
7
7
8
8
1
SLOA038
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Differential Gain vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Differential Phase vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Differential Gain vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Differential Phase vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Differential Gain vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Differential Phase vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Differential Gain vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Differential Phase vs Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Closed-Loop Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output Impedance vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output Voltage vs Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Gain and Phase vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Open Loop Transimpedance Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Open Loop Transimpedance Gain vs Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
THS3001 SPICE Model Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
List of Tables
1 Subcircuit Node to Symbol Pin Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2
THS3001 SPICE Model Performance
SLOA038
1
Introduction
SPICE modeling has become commonplace today, especially with the advent of affordable PCs
with more computing power than main frames of a few years ago.
A big concern in SPICE modeling is the accuracy of the models. Without a good model,
simulation results are little more than verification of rudimentary circuit operation. The Boyle
operational amplifier (op amp) model introduced during the mid ‘70s came from the need for a
model that did not use a lot of computing resources, and gave reasonable results for the µA741.
In the years since, people have enhanced the Boyle model to add more accuracy.
Today, full-transistor models simulate with speed and accuracy on modest home systems. The
goal, when creating the SPICE model of the THS3001 high-speed monolithic operational
amplifier, is to provide a model that will accurately simulate the actual device in a circuit. The
model is derived from the full-transistor model used internally by TI design. Simplifications are
made to speed simulation time, and various performance parameters are adjusted to match the
model to measured device performance.
2
File Structure
The THS3001 SPICE model file, THS3001.lib, is written in ASCII file format and is compatible
with a wide variety of computing platforms. The model is written in subcircuit format and has
been tested with MicroSim PSpice release 8 and OrCAD PSpice version 9. It should be
compatible with most SPICE2- and SPICE3-based simulation programs.
The THS3001.lib file contains the subcircuit definition for the THS3001. The model begins with a
.SUBCKT statement and ends with a .ENDS statement.
3
Performance
Typical performance parameters are modeled, and normal part-to-part variations experienced in
real life cannot be expected. At frequencies above a few hundred MHz, performance becomes
increasingly dependent on parasitic devices associated with the circuit, and modeling suffers.
So, even though the model is very accurate, always verify circuit performance with lab testing.
An EVM is available upon request.
The following graphs compare simulation results to measured device data. In all graphs, the
simulation results are dashed lines and the measured data are solid lines. Device performance
is measured using the THS3001 EVM, or is taken from the data sheet. SPICE simulation was
done using MicroSim PSpice release 8. Most of the parameters are measured using
Vcc=±15 V, and performance follows at lower voltages.
THS3001 SPICE Model Performance
3
SLOA038
13.6
RL = 1 kΩ
13.2
13
12.8
RL = 150 Ω
12.6
12.4
12.2
–40
0
20
40
60
80
RL = 1 kΩ
3.4
VI
3.3
3.2
RL = 150 Ω
–20
T – Temperature – °C
I CC – Supply Current – mA
I CC – Supply Current – mA
5
4
3
20
40
60
80
100
5
4
3
–20
0
20
40
60
80
100
T – Temperature – °C
Figure 4. Supply Current vs Temperature
2.5
2.5
VCC = ±5 V
VCC = ±15 V
2
Bias Current – µ A
2
Bias Current – µ A
100
SPICE
Measured
Figure 3. Supply Current vs Temperature
1.5
1
1.5
1
0.5
0.5
SPICE
Measured
SPICE
Measured
–20
0
20
40
60
80
100
T – Temperature – °C
Figure 5. Bias Current vs Temperature
4
80
6
1
–40
T – Temperature – °C
0
–40
60
2
SPICE
Measured
0
40
VCC = ±5 V
6
–20
20
7
VCC = ±15 V
7
1
–40
0
Figure 2. Output Voltage (pk) vs Temperature
9
2
1 kΩ
T – Temperature – °C
Figure 1. Output Voltage (pk) vs Temperature
8
500 Ω
SPICE
Measured
2.9
–40
100
+
–
THS3001 SPICE Model Performance
0
–40
–20
0
20
40
60
80
VO
RL
3.1
3
SPICE
Measured
–20
G = 3, Rf = 1 kΩ,
VCC = ±5 V
3.5
VO – Output Voltage – V
VO – Output Voltage – V
13.4
3.6
G = 3, Rf = 1 kΩ,
VCC = ±15 V
100
T – Temperature – °C
Figure 6. Bias Curent vs Temperature
SLOA038
VIO – Input Offset Voltage – mV
1.6
0.5
VCC = ±15 V
VIO – Input Offset Voltage – mV
1.8
1.4
1.2
1
0.8
0.6
0.4
0.2
SPICE
Measured
0
VCC = ±5 V
0.4
0.3
0.2
0.1
0
–0.1
SPICE
Measured
–0.2
–40–30–20–10 0 10 20 30 40 50 60 70 80
–0.2
–40–30–20–10 0 10 20 30 40 50 60 70 80
T – Temperature – °C
T – Temperature – °C
80
VCC = ±15 V
70
60
50
40
30
20
10
0
101
SPICE
Measured
102
103
104
105
106
107
108
Figure 8. Input Offset Voltage vs Temperature
CMRR – Common-Mode Rejection Ratio – dB
CMRR – Common-Mode Rejection Ratio – dB
Figure 7. Input Offset Voltage vs Temperature
80
VCC = ±5 V
70
60
50
40
30
20
10
0
101
SPICE
Measured
102
103
104
105
106
107
108
f – Frequency – Hz
f – Frequency – Hz
Figure 9. Common-Mode Rejection Ratio vs Frequency
1 kΩ
1 kΩ
1 kΩ
+
–
VI
VO
1 kΩ
Figure 10. Common-Mode Rejection Ratio vs Frequency
THS3001 SPICE Model Performance
5
SLOA038
PSRR – Power Supply Rejection Ratio – dB
PSRR – Power Supply Rejection Ratio – dB
80
VCC = ±15 V
70
60
50
40
30
20
10
SPICE
Measured
0
103
104
105
106
107
108
90
70
60
50
40
30
20
10
0
103
1 kΩ
104
105
106
1 kΩ
+
–
1 kΩ
SPICE
Measured
VO
+
–
VI
VCC
VCC
Figure 12. Power Supply Rejection Ratio vs Frequency
1000
VCC = ±15 V
Equivalent Input Current Noise –pA/rt Hz
Equivalent Input Voltqge Noise – nV/rt Hz
10
SPICE
Measured
102
103
104
105
f – Frequency – Hz
Figure 13. Equivalent Input Voltage Noise
vs Frequency
6
VO
1 kΩ
Figure 11. Power Supply Rejection Ratio vs Frequency
1
101
108
1 kΩ
1 kΩ
VI
1 kΩ
107
f – Frequency – Hz
f – Frequency – Hz
1 kΩ
VCC = ±5 V
80
THS3001 SPICE Model Performance
VCC = ±15 V
100
10
SPICE
Measured
1
101
102
103
104
105
f – Frequency – Hz
Figure 14. Equivalent Input Current Noise vs Frequency
SLOA038
10000
10000
VCC = ±15 V
Slew Rate – V/ µ s
Slew Rate – V/ µ s
VCC = ±5 V
1000
SPICE
Measured
SPICE
Measured
100
0
1
2
3
4
1000
100
0
5
5
VO – Output Voltage (pp) – V
VI
10
VI
+
_
15
+
_
VO
VO
150 Ω
150 Ω
250 Ω
250 Ω
1 kΩ
Figure 15. Slew Rate vs Output Voltage (pp)
1 kΩ
Figure 16. Slew Rate vs Output Voltage (pp)
–70
–80
VCC = ±5 V
VCC = ±15 V
–80
–90
Harmonic – dBc
Harmonic – dBc
20
VO – Output Voltage (pp) – V
–90
–100
–100
–110
SPICE
Measured
–110
106
SPICE
Measured
107
–120
106
107
f – Frequency – Hz
VI
+
–
f – Frequency – Hz
VI
VO = 2Vpp
+
–
150 Ω
750 Ω
750 Ω
Figure 17. 2nd Harmonic vs Frequency
VO = 2Vpp
150 Ω
750 Ω
750 Ω
Figure 18. 2nd Harmonic vs Frequency
THS3001 SPICE Model Performance
7
SLOA038
–70
–80
VCC = ±5 V
VCC = ±15 V
–75
Harmonic – dBc
Harmonic – dBc
–90
–80
–85
–90
–100
–110
–95
SPICE
Measured
–100
106
SPICE
Measured
107
–120
106
107
f – Frequency – Hz
VI
+
–
f – Frequency – Hz
VI
VO = 2Vpp
+
–
150 Ω
750 Ω
750 Ω
750 Ω
750 Ω
Figure 19. 3rd Harmonic vs Frequency
Figure 20. 3rd Harmonic vs Frequency
0.4
0.025
3.58 MHz,
VCC = ±5 V
3.58 MHz,
VCC = ±5 V
Differential Phase – deg
0.020
Differential Gain – %
VO = 2Vpp
150 Ω
0.015
0.010
0.3
0.2
0.1
0.005
SPICE
Measured
SPICE
Measured
0
0
1
2
3
4
5
6
7
1
8
2
3
4
Figure 21. Differential Gain vs Loads
7
8
0.4
3.58 MHz,
VCC = ±15 V
3.58 MHz,
VCC = ±15 V
Differential Phase – deg
0.035
Differential Gain – %
6
Figure 22. Differential Phase vs Loads
0.040
0.030
0.025
0.020
0.015
0.010
0.005
SPICE
Measured
1
2
3
4
5
6
7
8
150 Loads
Figure 23. Differential Gain vs Loads
THS3001 SPICE Model Performance
SPICE
Measured
0.3
0.2
0.1
0
0
8
5
150 Loads
150 Loads
1
2
3
4
5
6
7
8
150 Loads
Figure 24. Differential Phase vs Loads
SLOA038
0.5
0.045
4.43 MHz,
VCC = ±5 V
4.43 MHz,
VCC = ±5 V
0.040
0.4
Differential Phase – deg
Differential Gain – %
0.035
0.030
0.025
0.020
0.015
0.010
0.005
SPICE
Measured
0.3
0.2
0.1
SPICE
Measured
0
0
1
2
3
4
6
5
7
1
8
2
3
4
Figure 25. Differential Gain vs Loads
7
8
0.4
4.43 MHz,
VCC = ±15 V
0.035
0.030
VI
+
–
0.025
VO
RL
0.020
750 Ω
0.015
750 Ω
0.010
0.005
Differential Phase – deg
4.43 MHz,
VCC = ±15 V
0.040
Differential Gain – %
6
Figure 26. Differential Phase vs Loads
0.045
SPICE
Measured
1
2
3
4
5
6
7
0.3
SPICE
Measured
750 Ω
1
2
3
4
6
7
8
Figure 28. Differential Phase vs Loads
3
G = 1,
VCC = ±5 V
0
Rf = 750 Ω
VI
+
–
–2
Rf = 1 kΩ
Rf
–3
Rf = 1.5 kΩ
–4
SPICE
Measured
106
107
VO
150 Ω
ACL – Closed-Loop Gain – dB
2
1
–6
105
5
150 Loads
3
–5
VO
750 Ω
0.1
8
Figure 27. Differential Gain vs Loads
–1
+
–
RL
150 Loads
2
VI
0.2
0
0
ACL – Closed-Loop Gain – dB
5
150 Loads
150 Loads
1
0
–1
109
f – Frequency – Hz
Figure 29. Closed-Loop Gain vs Frequency
Rf = 750 Ω
VI
+
–
Rf = 1 kΩ
–2
–3
VO
150 Ω
Rf
Rf = 1.5 kΩ
–4
–5
108
G = 1,
VCC = ±15 V
–6
105
SPICE
Measured
106
107
108
109
f – Frequency – Hz
Figure 30. Closed-Loop Gain vs Frequency
THS3001 SPICE Model Performance
9
SLOA038
9
9
G = 2,
VCC = ±5 V
7
6
VI
Rf = 560 Ω
5
4
+
–
VO
RL
Rf = 750 Ω
Rf
3
Rf
2
Rf = 1 kΩ
1
–1
105
106
107
7
6
Rf = 560 Ω
5
108
Rf
Rf = 1 kΩ
1
SPICE
Measured
106
107
108
109
f – Frequency – Hz
Figure 31. Closed-Loop Gain vs Frequency
Figure 32. Closed-Loop Gain vs Frequency
17
17
G = 5,
VCC = ±5 V
15
14
Rf = 390 Ω
13
VI
12
+
–
VO
RL
Rf = 620 Ω
11
10
Rf
Rf = 1 kΩ
9
Rf
4
8
7
SPICE
Measured
6
5
105
106
G = 5,
VCC = ±15 V
16
ACL – Closed-Loop Gain – dB
16
ACL – Closed-Loop Gain – dB
VO
RL
Rf
2
f – Frequency – Hz
107
15
14
Rf = 390 Ω
13
VI
12
Rf = 560 Ω
11
Rf
Rf = 1 kΩ
8
109
Rf
4
7
SPICE
Measured
5
105
106
107
108
109
f – Frequency – Hz
Figure 34. Closed-Loop Gain vs Frequency
Figure 33. Closed-Loop Gain vs Frequency
100
Z O – Output Impedance – Ω
VCC = ±15 V
10
1
+
–
0.1
1 kΩ
0.01
0.001
105
SPICE
Measured
106
107
108
f – Frequency – Hz
109
Figure 35. Output Impedance vs Frequency
THS3001 SPICE Model Performance
VO
VO
RL
9
6
108
+
–
10
f – Frequency – Hz
10
+
–
3
–1
105
109
VI
Rf = 680 Ω
4
0
SPICE
Measured
0
G = 2,
VCC = ±15 V
8
ACL – Closed-Loop Gain – dB
ACL – Closed-Loop Gain – dB
8
50 Ω
VI
SLOA038
10
G = 4.9, Rf = 390 Ω,
RL = 150 Ω, VCC = ±15 V
0
Bessel, Fc = 159 kHz,
R = 1 kΩ, C = 1 nF,
K = 1, Rf = 1 kΩ, VCC = ±15 V
0
–50
–100
–10
Phase
–20
–150
–200
–30
Gain
–40
–250
–300
–50
–60
SPICE
Measured
0
10
20
30
40
50
60
70
80
–350
SPICE
Measured
–70
104
105
106
107
108
–400
109
f – Frequency – Hz
t – Time – ns
VI
Phase – deg
15
13
11
9
7
5
3
1
–1
–3
–5
–7
–9
–11
–13
–15
GAIN AND PHASE
vs
FREQUENCY
Gain – dB
VO– Output Voltage – V
OUTPUT VOLTAGE
vs
TIME
1 nF
+
–
VO
1 kΩ
150 Ω
1 kΩ
VI
390 Ω
+
–
1 nF
100 Ω
VO
1 kΩ
Figure 36. Output Voltage vs Time
Figure 37. Gain and Phase vs Frequency
140
120
–20
110
–40
90
80
70
–80
–100
–120
–140
–160
60
–180
50
–200
SPICE
Measured
40
30
102
VCC = ±15 V
–60
100
Phase – deg
Gain – dB Ω
20
0
VCC = ±15 V
130
103
104
105
106
107
108
109
f – Frequency – Hz
Figure 38. Open Loop Transimpedance Gain
vs Frequency
–220
–240
102
SPICE
Measured
103
104
105
106
107
108
109
f – Frequency – Hz
Figure 39. Open Loop Transimpedance Gain
vs Frequency
THS3001 SPICE Model Performance
11
SLOA038
4
Schematic and Subcircuit Listing
The schematic representation of the model and the subcircuit listing follow.
Figure 40. THS3001 SPICE Model Schematic
12
THS3001 SPICE Model Performance
SLOA038
* [Disclaimer] (C) Copyright Texas Instruments Incorporated 1999 All rights reserved
* Texas Instruments Incorporated hereby grants the user of this SPICE Macro–model a
* non–exclusive, nontransferable license to use this SPICE Macro–model under the following
* terms. Before using this SPICE Macro–model, the user should read this license. If the
* user does not accept these terms, the SPICE Macro–model should be returned to Texas
* Instruments within 30 days. The user is granted this license only to use the SPICE
* Macro–model and is not granted rights to sell, load, rent, lease or license the SPICE
* Macro–model in whole or in part, or in modified form to anyone other than user. User may
* modify the SPICE Macro–model to suit its specific applications but rights to derivative
* works and such modifications shall belong to Texas Instruments. This SPICE Macro–model is
* provided on an ”AS IS” basis and Texas Instruments makes absolutely no warranty with
* respect to the information contained herein. TEXAS INSTRUMENTS DISCLAIMS AND CUSTOMER
* WAIVES ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. The entire risk as to quality and performance is with
* the Customer. ACCORDINGLY, IN NO EVENT SHALL THE COMPANY BE LIABLE FOR ANY DAMAGES,
* WHETHER IN CONTRACT OR TORT,INCLUDING ANY LOST PROFITS OR OTHER INCIDENTAL, CONSEQUENTIAL,
* EXEMPLARY, OR PUNITIVE DAMAGES ARISING OUT OF THE USE OR APPLICATION OF THE SPICE
* Macro–model provided in this package. Further, Texas Instruments reserves the right to
* discontinue or make changes without notice to any product herein to improve reliability,
* function, or design. Texas Instruments does not convey any license under patent rights or
* any other intellectual property rights, including those of third parties.
*
* THS3001 SUBCIRCUIT
* HIGH SPEED, CURRENT FEEDBACK, OPERATIONAL AMPLIFIER
* WRITTEN 8/10/99
* TEMPLATE=X^@REFDES %IN+ %IN– %Vcc+ %Vcc– %OUT @MODEL
* CONNECTIONS:
NON–INVERTING INPUT
*
| INVERTING INPUT
*
| | POSITIVE POWER SUPPLY
*
| | | NEGATIVE POWER SUPPLY
*
| | | | OUTPUT
*
| | | | |
*
| | | | |
*
| | | | |
.SUBCKT THS3001
1 2 3 4 5
*
* INPUT *
Q1 31 32 2 NPN_IN 4
QD1 32 32 1 NPN 4
Q2 7 15 2 PNP_IN 4
QD2 15 15 1 PNP 4
* PROTECTION DIODES *
D1 1 3 Din_N
D2 4 1 Din_P
D3 5 3 Dout_N
D4 4 5 Dout_P
* SECOND STAGE *
Q3 17 31 11 PNP 2
Q4 16 7 13 NPN 2
QD3 30 30 17 PNP 3
THS3001 SPICE Model Performance
13
SLOA038
QD4 30 30 16 NPN 3
C1 30 3 0.4p
C2 4 30 0.4p
F1 3 31 VF1 1
VF1 33 34 0V
F2 7 4 VF2 1
VF2 35 6 0V
F3 3 12 VF3 1
VF3 34 11 0V
F4 14 4 VF4 1
VF4 13 35 0V
* FREQUENCY SHAPING *
E1 18 0 17 0 1
E2 19 0 16 0 1
R1 44 18 25
R2 19 42 25
C3 0 14 9p
C4 0 12 9p
L1 44 14 2.8n
L2 42 12 2.8n
* OUTPUT *
Q5 3 14 28 NPN 128
Q6 4 12 29 PNP 128
C5 28 9 7p
R5 9 5 100
L3 28 10 30n
R7 10 5 8
Re 28 29 Rt 50
C6 29 21 7p
R4 21 5 100
L4 29 22 30n
R6 22 5 8
* BIAS SOURCES *
G1 3 32 VALUE = { 308e–6+1.656e–6*V(3, 4) }
G2 15 4 VALUE = { 307e–6+1.656e–6*V(3, 4) }
V1 3 33 0.83
V2 6 4 0.83
.MODEL Rt RES TC1=–0.006
* DIODE MODELS *
.MODEL Din_N D IS=10E–21 N=1.836 ISR=1.565e–9 IKF=1e–4
CJO=2E–12 VJ=.5 M=.3333
.MODEL Din_P D IS=10E–21 N=1.836 ISR=1.565e–9 IKF=1e–4
CJO=2E–12 VJ=.5 M=.3333
.MODEL Dout_N D IS=10E–21 N=1.836 ISR=1.565e–9 IKF=1e–4
CJO=2E–12 VJ=.5 M=.3333
.MODEL Dout_P D IS=10E–21 N=1.836 ISR=1.565e–9 IKF=1e–4
CJO=2E–12 VJ=.5 M=.3333
* TRANSISTOR MODELS *
.MODEL NPN_IN NPN
+ IS=170E–18 BF=100 NF=1 VAF=100 IKF=0.0389 ISE=7.6E–18
14
THS3001 SPICE Model Performance
BV=30 IBV=100E–6 RS=105 TT=11.54E–9
BV=30 IBV=100E–6 RS=160 TT=11.54E–9
BV=30 IBV=100E–6 RS=60
TT=11.54E–9
BV=30 IBV=100E–6 RS=105 TT=11.54E–9
SLOA038
+ NE=1.13489 BR=1.11868 NR=1 VAR=4.46837 IKR=8 ISC=8E–15
+ NC=1.8 RB=251.6 RE=0.1220 RC=197 CJE=120.2E–15 VJE=1.0888 MJE=0.381406
+ VJC=0.589703 MJC=0.265838 FC=0.1 CJC=133.8E–15 XTF=272.204 TF=12.13E–12
+ VTF=10 ITF=0.294 TR=3E–09 XTB=1 XTI=5 KF=25E–15
.MODEL NPN NPN
+ IS=170E–18 BF=100 NF=1 VAF=100 IKF=0.0389 ISE=7.6E–18
+ NE=1.13489 BR=1.11868 NR=1 VAR=4.46837 IKR=8 ISC=8E–15
+ NC=1.8 RB=251.6 RE=0.1220 RC=197 CJE=120.2E–15 VJE=1.0888 MJE=0.381406
+ VJC=0.589703 MJC=0.265838 FC=0.1 CJC=133.8E–15 XTF=272.204 TF=12.13E–12
+ VTF=10 ITF=0.147 TR=3E–09 XTB=1 XTI=5
.MODEL PNP_IN PNP
+ IS=296E–18 BF=100 NF=1 VAF=100 IKF=0.021 ISE=494E–18
+ NE=1.49168 BR=0.491925 NR=1 VAR=2.35634 IKR=8 ISC=8E–15
+ NC=1.8 RB=251.6 RE=0.1220 RC=197 CJE=120.2E–15 VJE=0.940007 MJE=0.55
+ VJC=0.588526 MJC=0.55 FC=0.1 CJC=133.8E–15 XTF=141.135 TF=12.13E–12
+ VTF=6.82756 ITF=0.267 TR=3E–09 XTB=1 XTI=5 KF=25E–15
.MODEL PNP PNP
+ IS=296E–18 BF=100 NF=1 VAF=100 IKF=0.021 ISE=494E–18
+ NE=1.49168 BR=0.491925 NR=1 VAR=2.35634 IKR=8 ISC=8E–15
+ NC=1.8 RB=251.6 RE=0.1220 RC=197 CJE=120.2E–15 VJE=0.940007 MJE=0.55
+ VJC=0.588526 MJC=0.55 FC=0.1 CJC=133.8E–15 XTF=141.135 TF=12.13E–12
+ VTF=6.82756 ITF=0.267 TR=3E–09 XTB=1 XTI=5
.ENDS
*$
5
About Building a Symbol
The first line of the subcircuit definition – .SUBCKT THS3001_NN 1 2 3 4 5 – defines the name
of the model and the subcircuit nodes available for external connection. When creating a symbol
in PSpice, the subcircuit node assignments need to match the TEMPLATE device property,
and the MODEL value must equal the model name. The comment line in the file * TEMPLATE =
X^@REFDES %IN+ %IN– %VCC+ %VCC– %OUT @MODEL gives the proper value for the
TEMPLATE property. This associates the symbol pin names with subcircuit nodes available for
external connections. The symbol pin numbers are used for packaging purposes and are not
used for simulation. Using the forgoing results in the following associations:
Table 1. Subcircuit Node to Symbol Pin Summary
Subcircuit Node
THS3001
Symbol Pin Name
2
IN–
3
Vcc+
4
Vcc–
5
OUT
THS3001 SPICE Model Performance
15
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TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
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Copyright  1999, Texas Instruments Incorporated