[SOLVED] ELDO netlist format, what is the last one stand for?

* Component pathname : $SIL013_KIT/lib/nmos4 [ELDOSPICE]
*
* .include /EDA/Mentor/sil013_mentor/lib/nmos4/nm_hp

* Component pathname : $SIL013_KIT/lib/pmos4 [ELDOSPICE]
*
* .include /EDA/Mentor/sil013_mentor/lib/pmos4/pm_hp

*
* MAIN CELL: Component pathname : /home/nurahmad/soc/opamp/schem/opamp1
*
CC N$39 OUT 3P
X_M9 N$42 N$42 VDD VDD pm_hp L=0.13u W=2u M=1
X_M6 OUT N$39 VDD VDD pm_hp L=0.13u W=64u M=1
X_M4 N$39 N$14 VDD VDD pm_hp L=0.13u W=16u M=1
X_M3 N$14 N$14 VDD VDD pm_hp L=0.13u W=16u M=1
X_M7 OUT N$42 VSS VSS nm_hp L=0.13u W=30u M=1
X_M8 N$42 N$42 VSS VSS nm_hp L=0.13u W=15u M=1
X_M5 N$10 N$42 VSS VSS nm_hp L=0.13u W=15u M=1
X_M2 N$39 IN+ N$10 VSS nm_hp L=0.13u W=48u M=1
X_M1 N$14 IN- N$10 VSS nm_hp L=0.13u W=48u M=1
*
.end

Hi guys,
Above is the Eldo netlist generated from the Mentor Graphics, this netlist is the conventional CMOS op-amp (OTA) netlist.

Here is question:

Format:
X_M9 N$42 N$42 VDD VDD pm_hp L=0.13u W=2u M=1

Label D G S B Pmos length width ???

What is the last one M=1 stand for? is it the number of fingers?

M is the 'multiplier'. M=10 would mean 10 identical transistors in parallel.

Keith

keith1200rs said:

M is the 'multiplier'. M=10 would mean 10 identical transistors in parallel.

Keith

Click to expand...

X_M6 OUT N$39 VDD VDD pm_hp L=0.13u W=64u M=1

So, in this case, if i want to have a transistor M6 that have the width (W=64u and M=1), can I change it to (W=16u and M=4) ?

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keith1200rs said:

M is the 'multiplier'. M=10 would mean 10 identical transistors in parallel.

Keith

Click to expand...

Thank you Keith...I simulated the op amp with (W=64u, M=1) and (W=16u, M=4), it gives the same result. So M means the multiplier, indicate same transistors in parallel.

Thank you again Keith !