LIBRARY
Analog.Semiconductors.Tests.PMOSTest ​
Test circuit for PMOS: the polarity mirror of the NMOS test bench.
Source and bulk sit on the 1.8 V rail and the drain is loaded by 1 kOhm to ground, so drain current pulls the output node up. The gate ramps 1.8 V down to 0 over 1 s, crossing the same three regions with every comparison reversed.
Vt is negative here, -1.0 V on the default MSL card. The device conducts once ugst = (Vgate - 1.8 - Vt)*K5 goes negative, i.e. below Vgate = 0.8.
m.d.i is the drain pin current and is negative throughout; cout.v rises from 0 toward the rail as the device turns on.
Usage ​
ElectricalComponents.Analog.Semiconductors.Tests.PMOSTest()
Behavior ​
Source ​
dyad
"""
Test circuit for PMOS: the polarity mirror of the NMOS test bench.
Source and bulk sit on the 1.8 V rail and the drain is loaded by 1 kOhm to ground, so
drain current pulls the output node up. The gate ramps 1.8 V down to 0 over 1 s,
crossing the same three regions with every comparison reversed.
**`Vt` is negative here**, `-1.0` V on the default MSL card. The device conducts once
`ugst = (Vgate - 1.8 - Vt)*K5` goes negative, i.e. below `Vgate = 0.8`.
`m.d.i` is the drain pin current and is negative throughout; `cout.v` rises from 0
toward the rail as the device turns on.
"""
test component PMOSTest
"Supply rail level (1.8 V)"
supply_lvl = BlockComponents.Sources.Constant(k = 1.8) {
"Dyad": {"placement": {"diagram": {"x1": 160, "y1": 576, "x2": 260, "y2": 676}}}
}
"Supply rail"
supply = ElectricalComponents.Analog.Sources.VoltageSource() {
"Dyad": {"placement": {"diagram": {"x1": 295, "y1": 681, "x2": 395, "y2": 781}}}
}
"Gate ramp: 1.8 V down to 0 over 1 s"
gate_sig = BlockComponents.Sources.Ramp(offset = 1.8, height = -1.8, duration = 1) {
"Dyad": {"placement": {"diagram": {"x1": 290, "y1": 276, "x2": 390, "y2": 376}}}
}
"Gate drive"
gate = ElectricalComponents.Analog.Sources.VoltageSource() {
"Dyad": {"placement": {"diagram": {"x1": 435, "y1": 566, "x2": 535, "y2": 666}}}
}
"Drain load resistor (1 kΩ)"
rd = ElectricalComponents.Analog.Basic.Resistor(R = 1000) {
"Dyad": {"placement": {"diagram": {"x1": 35, "y1": 476, "x2": 135, "y2": 576}}}
}
"MOSFET under test"
m = ElectricalComponents.Analog.Semiconductors.PMOS() {
"Dyad": {"placement": {"diagram": {"x1": 565, "y1": 666, "x2": 665, "y2": 766}}}
}
"Output node capacitance (1 µF); supplies the differential state"
cout = ElectricalComponents.Analog.Basic.Capacitor(C = 1u) {
"Dyad": {"placement": {"diagram": {"x1": 165, "y1": 376, "x2": 265, "y2": 476}}}
}
"Ground reference"
ground = ElectricalComponents.Analog.Basic.Ground() {
"Dyad": {"placement": {"diagram": {"x1": 570, "y1": 75, "x2": 670, "y2": 175}}}
}
relations
"Gate starts at the rail, so the device is off and the output sits at ground"
initial cout.v = 0
connect(supply_lvl.y, supply.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 345, "y": 626}], "E": 2}], "path": {}}}
connect(gate_sig.y, gate.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 485, "y": 326}], "E": 2}], "path": {}}}
connect(supply.p, m.s, m.b) {
"Dyad": {
"edges": [
{
"S": 1,
"M": [{"x": 280, "y": 731}, {"x": 280, "y": 831}, {"x": 615, "y": 831}],
"E": 2
},
{
"S": 2,
"M": [{"x": 615, "y": 781}, {"x": 680, "y": 781}, {"x": 680, "y": 716}],
"E": 3
}
],
"path": {}
}
}
connect(m.d, rd.p, cout.p) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 615, "y": 225}, {"x": 20, "y": 225}], "E": -1},
{"S": -1, "M": [{"x": 20, "y": 526}], "E": 2},
{"S": -1, "M": [], "E": 3}
],
"junctions": [{"x": 20, "y": 426}],
"path": {}
}
}
connect(gate.p, m.g) {
"Dyad": {
"edges": [{"S": 1, "M": [{"x": 420, "y": 616}, {"x": 420, "y": 716}], "E": 2}],
"path": {}
}
}
connect(rd.n, cout.n, supply.n, gate.n, ground.g) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 280, "y": 526}], "E": -1},
{"S": -1, "M": [], "E": 2},
{"S": -1, "M": [], "E": -2},
{"S": -2, "M": [{"x": 410, "y": 731}], "E": 3},
{"S": -2, "M": [{"x": 410, "y": 316}], "E": -3},
{"S": -3, "M": [{"x": 550, "y": 616}], "E": 4},
{
"S": 4,
"M": [{"x": 550, "y": 616}, {"x": 550, "y": 20}, {"x": 620, "y": 20}],
"E": 5
}
],
"junctions": [{"x": 280, "y": 426}, {"x": 410, "y": 426}, {"x": 550, "y": 316}],
"path": {}
}
}
metadata {
"Dyad": {
"tests": {"case1": {"stop": 1, "expect": {"signals": ["m.d.i", "m.ugst", "cout.v"]}}}
}
}
endFlattened Source
dyad
"""
Test circuit for PMOS: the polarity mirror of the NMOS test bench.
Source and bulk sit on the 1.8 V rail and the drain is loaded by 1 kOhm to ground, so
drain current pulls the output node up. The gate ramps 1.8 V down to 0 over 1 s,
crossing the same three regions with every comparison reversed.
**`Vt` is negative here**, `-1.0` V on the default MSL card. The device conducts once
`ugst = (Vgate - 1.8 - Vt)*K5` goes negative, i.e. below `Vgate = 0.8`.
`m.d.i` is the drain pin current and is negative throughout; `cout.v` rises from 0
toward the rail as the device turns on.
"""
test component PMOSTest
"Supply rail level (1.8 V)"
supply_lvl = BlockComponents.Sources.Constant(k = 1.8) {
"Dyad": {"placement": {"diagram": {"x1": 160, "y1": 576, "x2": 260, "y2": 676}}}
}
"Supply rail"
supply = ElectricalComponents.Analog.Sources.VoltageSource() {
"Dyad": {"placement": {"diagram": {"x1": 295, "y1": 681, "x2": 395, "y2": 781}}}
}
"Gate ramp: 1.8 V down to 0 over 1 s"
gate_sig = BlockComponents.Sources.Ramp(offset = 1.8, height = -1.8, duration = 1) {
"Dyad": {"placement": {"diagram": {"x1": 290, "y1": 276, "x2": 390, "y2": 376}}}
}
"Gate drive"
gate = ElectricalComponents.Analog.Sources.VoltageSource() {
"Dyad": {"placement": {"diagram": {"x1": 435, "y1": 566, "x2": 535, "y2": 666}}}
}
"Drain load resistor (1 kΩ)"
rd = ElectricalComponents.Analog.Basic.Resistor(R = 1000) {
"Dyad": {"placement": {"diagram": {"x1": 35, "y1": 476, "x2": 135, "y2": 576}}}
}
"MOSFET under test"
m = ElectricalComponents.Analog.Semiconductors.PMOS() {
"Dyad": {"placement": {"diagram": {"x1": 565, "y1": 666, "x2": 665, "y2": 766}}}
}
"Output node capacitance (1 µF); supplies the differential state"
cout = ElectricalComponents.Analog.Basic.Capacitor(C = 1u) {
"Dyad": {"placement": {"diagram": {"x1": 165, "y1": 376, "x2": 265, "y2": 476}}}
}
"Ground reference"
ground = ElectricalComponents.Analog.Basic.Ground() {
"Dyad": {"placement": {"diagram": {"x1": 570, "y1": 75, "x2": 670, "y2": 175}}}
}
relations
"Gate starts at the rail, so the device is off and the output sits at ground"
initial cout.v = 0
connect(supply_lvl.y, supply.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 345, "y": 626}], "E": 2}], "path": {}}}
connect(gate_sig.y, gate.V) {"Dyad": {"edges": [{"S": 1, "M": [{"x": 485, "y": 326}], "E": 2}], "path": {}}}
connect(supply.p, m.s, m.b) {
"Dyad": {
"edges": [
{
"S": 1,
"M": [{"x": 280, "y": 731}, {"x": 280, "y": 831}, {"x": 615, "y": 831}],
"E": 2
},
{
"S": 2,
"M": [{"x": 615, "y": 781}, {"x": 680, "y": 781}, {"x": 680, "y": 716}],
"E": 3
}
],
"path": {}
}
}
connect(m.d, rd.p, cout.p) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 615, "y": 225}, {"x": 20, "y": 225}], "E": -1},
{"S": -1, "M": [{"x": 20, "y": 526}], "E": 2},
{"S": -1, "M": [], "E": 3}
],
"junctions": [{"x": 20, "y": 426}],
"path": {}
}
}
connect(gate.p, m.g) {
"Dyad": {
"edges": [{"S": 1, "M": [{"x": 420, "y": 616}, {"x": 420, "y": 716}], "E": 2}],
"path": {}
}
}
connect(rd.n, cout.n, supply.n, gate.n, ground.g) {
"Dyad": {
"edges": [
{"S": 1, "M": [{"x": 280, "y": 526}], "E": -1},
{"S": -1, "M": [], "E": 2},
{"S": -1, "M": [], "E": -2},
{"S": -2, "M": [{"x": 410, "y": 731}], "E": 3},
{"S": -2, "M": [{"x": 410, "y": 316}], "E": -3},
{"S": -3, "M": [{"x": 550, "y": 616}], "E": 4},
{
"S": 4,
"M": [{"x": 550, "y": 616}, {"x": 550, "y": 20}, {"x": 620, "y": 20}],
"E": 5
}
],
"junctions": [{"x": 280, "y": 426}, {"x": 410, "y": 426}, {"x": 550, "y": 316}],
"path": {}
}
}
metadata {
"Dyad": {
"tests": {"case1": {"stop": 1, "expect": {"signals": ["m.d.i", "m.ugst", "cout.v"]}}}
}
}
endTest Cases ​
Test Case case1 ​
julia
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julia
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julia
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