4.9. Tap Devices

4.9.1. ptap1

Device Information

P-well (substrate) diffusion contact.

Property	Value
Description	Substrate contact which keeps the substrate a separate net.
Device Recognition	Activ, pSD, Substrate, text (sub!)
Model Name	ptap1
Layout Cell Name	sg13g2_pr - ptap1
Parameters	W, L, A, P/Perim, R
Netlist Syntax	R1 net1 sub! ptap1 A=608.4f P=3.12u
Additional Notes	Used in analog designs.
	The resistance value is not accurate (~ 262 Ω).
	The regular ptap is not recognized as a device.

Parameters Information

Schematic and LVS views Compatibility for ptap1 Parameters

Parameter	Description	Schematic-View	LVS-View	LVS-Comparison
W	Active width	❌	❌	❌
L	Active length	❌	❌	❌
A	Active area	❌	✅	✅
P/Perim	Active perimeter	❌	✅	✅
R	Resistance Value	❌	❌	❌

Tip

• You have the option to use either W/L or A/P in your netlist.

Layout Information (Refer to Layout Layers)

Figure 4.9.1 Layout for ptap1 device

4.9.2. ntap1

Device Information

N-well diffusion contact.

Property	Value
Description	Nwell contact which keeps the nwell a separate net.
Device Recognition	Activ, Nwell, text (well)
Model Name	ntap1
Layout Cell Name	sg13g2_pr - ntap1
Parameters	W, L, A, P/Perim, R
Netlist Syntax	R1 net1 WELL ntap1 A=608.4f P=3.12u
Additional Notes	Used in analog designs.
	The resistance value is not accurate (~ 262 Ω)
	The regular ntap is not recognized as a device.

Parameters Information

Schematic and LVS views Compatibility for ntap1 Parameters

Parameter	Description	Schematic-View	LVS-View	LVS-Comparison
W	Active width	❌	❌	❌
L	Active length	❌	❌	❌
A	Active area	❌	✅	✅
P/Perim	Active perimeter	❌	✅	✅
R	Resistance Value	❌	❌	❌

Tip

• You have the option to use either W/L or A/P in your netlist.

Layout Information (Refer to Layout Layers)

Figure 4.9.2 Layout for ntap1 device