"""Resistor components for IHP PDK."""
from typing import Literal
import gdsfactory as gf
from .. import tech
from .ihp_pycell import CbResCalc, CbResCurrent, eng_string_to_float
from .ihp_pycell import rhigh as rhighIHP
from .ihp_pycell import rppd as rppdIHP
from .ihp_pycell import rsil as rsilIHP
from .utils import *
[docs]
@gf.cell
def rhigh(
length: float = 0.96,
width: float = 0.5,
bends: int = 0,
polySpace: float = 0.18,
numberOfSegments: int = 1,
segmentConnection: Literal["None", "Serial", "Parallel"] = "Serial",
segmentSpacing: float = 2,
guardRingType: Literal["none", "nwell", "psub"] = "none",
guardRingDistance: float = 1,
) -> gf.Component:
"""Create a high-resistance polysilicon resistor layout.
This function generates a parametric high-resistance polysilicon resistor
with configurable width, length, bends, and multiple segments. Optional
guard rings can be added for isolation.
Args:
length: Length of the resistor in micrometers.
width: Width of the resistor in micrometers.
bends: Number of bends in the resistor path.
polySpace: Spacing between polysilicon lines in micrometers.
numberOfSegments: Number of resistor segments.
segmentConnection: Connection type between segments. Options:
- 'None': Segments not connected.
- 'Serial': Segments connected in series.
- 'Parallel': Segments connected in parallel.
segmentSpacing: Spacing between segments in micrometers.
guardRingType: Type of guard ring to include. Options:
- 'none': No guard ring.
- 'nwell': N-well guard ring.
- 'psub': P-substrate guard ring.
guardRingDistance: Distance between the resistor and guard ring in micrometers.
Returns:
gdsfactory.Component: The generated high-resistance polysilicon resistor layout.
"""
params = {
"cdf_version": tech.techParams["CDFVersion"],
"Display": "Selected",
"Calculate": "l", # TODO check what to do
"Recommendation": "No",
"model": tech.techParams["rhigh_model"],
"R": CbResCalc(
"R", 0, length * 1e-6, width * 1e-6, bends, polySpace * 1e-6, "rhigh"
), # TODO Is this used?
"w": width * 1e-6, # Length in μm
"l": length * 1e-6, # Length in μm
"b": bends,
"ps": polySpace * 1e-6,
"Imax": CbResCurrent(
width * 1e-6, tech.techParams["epsilon2"], "rhighG2"
), # TODO Is this used?
"bn": "sub!",
"Wmin": eng_string_to_float(tech.techParams["rhigh_minW"]) * 1e-6,
"Lmin": eng_string_to_float(tech.techParams["rhigh_minL"]) * 1e-6,
"PSmin": eng_string_to_float(tech.techParams["rhigh_minPS"]) * 1e-6,
"Rspec": tech.techParams["rhigh_rspec"],
"Rkspec": tech.techParams["rhigh_rkspec"],
"Rzspec": tech.techParams["rhigh_rzspec"],
"tc1": -2300e-6, # hardcoded in the PCell
"tc2": 2.1e-6, # hardcoded in the PCell
"PWB": "No",
"m": 1, # Multiplier
"trise": 0,
"NumberOfSegments": numberOfSegments,
"SegmentConnection": segmentConnection,
"SegmentSpacing": segmentSpacing * 1e-6,
"guardRingType": guardRingType,
"guardRingDistance": guardRingDistance * 1e-6,
}
c = generate_gf_from_ihp(
cell_name="rhigh", cell_params=params, function_name=rhighIHP()
)
# add ports to the component
gf.add_ports.add_ports_from_boxes(
c,
pin_layer=(tech.LAYER.Metal1pin),
port_type="electrical",
ports_on_short_side=False,
)
return c
[docs]
@gf.cell
def rppd(
length: float = 0.5,
width: float = 0.5,
bends: int = 0,
polySpace: float = 0.18,
numberOfSegments: int = 1,
segmentConnection: Literal["None", "Serial", "Parallel"] = "Serial",
segmentSpacing: float = 2,
guardRingType: Literal["none", "nwell", "psub"] = "none",
guardRingDistance: float = 1,
) -> gf.Component:
"""Create a high-resistance polysilicon resistor layout.
This function generates a parametric high-resistance polysilicon resistor
with configurable width, length, bends, and multiple segments. Optional
guard rings can be added for isolation.
Args:
length: Length of the resistor in micrometers.
width: Width of the resistor in micrometers.
bends: Number of bends in the resistor path.
polySpace: Spacing between polysilicon lines in micrometers.
numberOfSegments: Number of resistor segments.
segmentConnection: Connection type between segments. Options:
- 'None': Segments not connected.
- 'Serial': Segments connected in series.
- 'Parallel': Segments connected in parallel.
segmentSpacing: Spacing between segments in micrometers.
guardRingType: Type of guard ring to include. Options:
- 'none': No guard ring.
- 'nwell': N-well guard ring.
- 'psub': P-substrate guard ring.
guardRingDistance: Distance between the resistor and guard ring in micrometers.
Returns:
gdsfactory.Component: The generated high-resistance polysilicon resistor layout.
"""
params = {
"cdf_version": tech.techParams["CDFVersion"],
"Display": "Selected",
"Calculate": "l", # TODO check what to do
"Recommendation": "No",
"model": tech.techParams["rppd_model"],
"R": CbResCalc(
"R", 0, length * 1e-6, width * 1e-6, bends, polySpace * 1e-6, "rppd"
), # TODO Is this used?
"w": width * 1e-6, # Length in μm
"l": length * 1e-6, # Length in μm
"b": bends,
"ps": polySpace * 1e-6,
"Imax": CbResCurrent(
width * 1e-6, tech.techParams["epsilon2"], "rppdG2"
), # TODO Is this used?
"bn": "sub!",
"Wmin": eng_string_to_float(tech.techParams["rppd_minW"]) * 1e-6,
"Lmin": eng_string_to_float(tech.techParams["rppd_minL"]) * 1e-6,
"PSmin": eng_string_to_float(tech.techParams["rppd_minPS"]) * 1e-6,
"Rspec": tech.techParams["rppd_rspec"],
"Rkspec": tech.techParams["rppd_rkspec"],
"Rzspec": tech.techParams["rppd_rzspec"],
"tc1": -170e-6, # hardcoded in the PCell
"tc2": 0.4e-6, # hardcoded in the PCell
"PWB": "No",
"m": 1, # Multiplier
"trise": 0,
"NumberOfSegments": numberOfSegments,
"SegmentConnection": segmentConnection,
"SegmentSpacing": segmentSpacing * 1e-6,
"guardRingType": guardRingType,
"guardRingDistance": guardRingDistance * 1e-6,
}
c = generate_gf_from_ihp(
cell_name="rppd", cell_params=params, function_name=rppdIHP()
)
# add ports to the component
gf.add_ports.add_ports_from_boxes(
c,
pin_layer=(tech.LAYER.Metal1pin),
port_type="electrical",
ports_on_short_side=False,
)
return c
[docs]
@gf.cell
def rsil(
length: float = 0.5,
width: float = 0.5,
polySpace: float = 0.18,
resistance: float = 24.9,
numberOfSegments: int = 1,
segmentConnection: Literal["None", "Serial", "Parallel"] = "Serial",
segmentSpacing: float = 2,
guardRingType: Literal["none", "nwell", "psub"] = "none",
guardRingDistance: float = 1,
) -> gf.Component:
"""Create a high-resistance polysilicon resistor layout (RSIL type).
This function generates a parametric high-resistance polysilicon resistor
of RSIL type with configurable width, length, target resistance, bends,
multiple segments, and optional guard rings for isolation.
Args:
length: Length of the resistor in micrometers.
width: Width of the resistor in micrometers.
polySpace: Spacing between polysilicon lines in micrometers.
resistance: Target resistance value in ohms.
numberOfSegments: Number of resistor segments.
segmentConnection: Connection type between segments. Options:
- 'None': Segments not connected.
- 'Serial': Segments connected in series.
- 'Parallel': Segments connected in parallel.
segmentSpacing: Spacing between segments in micrometers.
guardRingType: Type of guard ring to include. Options:
- 'none': No guard ring.
- 'nwell': N-well guard ring.
- 'psub': P-substrate guard ring.
guardRingDistance: Distance between the resistor and guard ring in micrometers.
Returns:
gdsfactory.Component: The generated RSIL polysilicon resistor layout.
"""
params = {
"cdf_version": tech.techParams["CDFVersion"],
"Display": "Selected",
"Calculate": "l", # TODO check what to do
"Recommendation": "No",
"model": tech.techParams["rsil_model"],
"R": resistance, # TODO IHP function defines it as user parameter but also calculates it
"w": width * 1e-6, # Length in μm
"l": length * 1e-6, # Length in μm
"ps": polySpace * 1e-6,
"Imax": CbResCurrent(
width * 1e-6, tech.techParams["epsilon2"], "rsilG2"
), # TODO Is this used?
"bn": "sub!",
"Wmin": eng_string_to_float(tech.techParams["rsil_minW"]) * 1e-6,
"Lmin": eng_string_to_float(tech.techParams["rsil_minL"]) * 1e-6,
"PSmin": eng_string_to_float(tech.techParams["rsil_minPS"]) * 1e-6,
"Rspec": tech.techParams["rsil_rspec"],
"Rkspec": tech.techParams["rsil_rkspec"],
"Rzspec": tech.techParams["rsil_rzspec"],
"tc1": -170e-6, # hardcoded in the PCell
"tc2": 0.4e-6, # hardcoded in the PCell
"PWB": "No",
"m": 1, # Multiplier
"trise": 0,
"NumberOfSegments": numberOfSegments,
"SegmentConnection": segmentConnection,
"SegmentSpacing": segmentSpacing * 1e-6,
"guardRingType": guardRingType,
"guardRingDistance": guardRingDistance * 1e-6,
}
c = generate_gf_from_ihp(
cell_name="rsil", cell_params=params, function_name=rsilIHP()
)
# add ports to the component
gf.add_ports.add_ports_from_boxes(
c,
pin_layer=(tech.LAYER.Metal1pin),
port_type="electrical",
ports_on_short_side=False,
)
return c
if __name__ == "__main__":
# Test the components
c1 = rsil(width=1.0, length=10.0)
c1.show()
c2 = rppd(width=0.8, length=20.0)
c2.show()
c3 = rhigh(width=1.4, length=50.0)
c3.show()
