4.6. Capacitor Devices

4.6.1. cmim

Device Information

Metal-Insulator-Metal capacitor
Property	Value
Description	Metal5 - insulator - TopMetal1 capacitor, scalable rectangular shape.
Device Recognition	MIM, VMIM, Metal5, TopMetal1
Model Name	cap_cmim
Layout Cell Name	sg13g2_pr - cmim
Parameters	w, l, A, P, m
Netlist Syntax	C0 PLUS MINUS cap_cmim w=6.99u l=6.99u m=1
Additional Notes	Capacitor body is defined by MIM drawing. Not available with Cu BEOL.
	Within MIM capacitor layer Vmim can be used instead of TopVia1.

Parameters Information

Schematic and LVS views Compatibility for cmim Parameters
Parameter	Description	Schematic-View	LVS-View	LVS-Comparison
W	Capacitor Width	✅	✅	❌
L	Capacitor Length	✅	✅	❌
A	Capacitor Area	✅	✅	✅
P	Capacitor Perimeter	✅	✅	✅
m/MF	Number of capacitors (multiplicity)	❌	✅	✅

Layout Information (Refer to Layout Layers)

Figure 4.6.1 Layout for cmim capacitor device

Device Information

Metal-Insulator-Metal RF capacitor
Property	Value
Description	Metal5 - insulator - TopMetal1 capacitor with ptap surrounding and special RF model.
Device Recognition	MIM, VMIM, Metal5, TopMetal1, PWell.blk, ptap (Activ + pSD)
Model Name	rfcmim
Layout Cell Name	sg13g2_pr - rfcmim
Parameters	w, l, A, P, wfeed
Netlist Syntax	C1 PLUS MINUS sub! rfcmim w=7u l=7u wfeed=3u

Parameters Information

Schematic and LVS views Compatibility for rfcmim Parameters
Parameter	Description	Schematic-View	LVS-View	LVS-Comparison
W	Capacitor Width	❌	✅	✅
L	Capacitor Length	❌	✅	✅
A	Capacitor Area	✅	✅	✅
P	Capacitor Perimeter	✅	✅	✅
wfeed	Capacitor feed width	❌	✅	✅

Layout Information (Refer to Layout Layers)

Figure 4.6.2 Layout for rfcmim capacitor device

Device Information

variable capacitor - MOSFET
Property	Value
Description	Variable capacitor, available only with thick oxide.
Device Recognition	Activ, GatPoly, pSD, Nwell, nBuLay, ThickGateOx
Model Name	SVaricap
Layout Cell Name	sg13g2_pr - SVaricap
Parameters	w, l
Netlist Syntax	C1 G1 W G2 sub! sg13_hv_svaricap l=0.3u w=3.74u
Additional Notes	Only two combinations of width and length are allowed.

Parameters Information

Schematic and LVS views Compatibility for SVaricap Parameters
Parameter	Description	Schematic-View	LVS-View	LVS-Comparison
W	Capacitor Width	❌	✅	✅
L	Capacitor Length	❌	✅	✅

Layout Information (Refer to Layout Layers)

Figure 4.6.3 Layout for SVaricap capacitor device