where can i get standard cells in cadence

[balu304]

hi
i want to simulate a analog circuit quickly which contain many components like opamps...etc.can anybody tell how to use standard cells like opamp....and where can i get those standard cell in cadence.
can anybody upload a pnp model file plssss.....

 

[khorram]

What do you mean?

If you run IC5 package, you will have a schematic editor to design what you want. Therfore you can select some cells from the library.

Regards,
KH

 

[Hughes]

Ideal opamp can be modeled by vcvs in cadence. Precise models should be obtained from foundry. But if you just want models for studying, below is a pnp model for vertical pnp in standard CMOS technology.

.model pnp pnp
+LEVEL  = 1             IS     = 2.23E-17    BF     = 2.72
+NF     = 1.01          VAF    = 276.5       IKF    = 1.42E-03
+ISE    = 1.14E-18      NE     = 1.11        BR     = 8.89E-03
+NR     = 1.01          VAR    = 11.59       IKR    = 4.86E-03
+ISC    = 1.32E-17      NC     = 1.22        RB     = 116.2
+IRB    = 1.50E-03      RBM    = 2.0         RE     = 5.0
+RC     = 15.0          XTI    = 3.0         EG     = 1.17
+CJE    = 1.62E-13      VJE    = 1.23        MJE    = 0.65
+CJC    = 3.25E-14      VJC    = 0.49        MJC    = 0.23
+TREF   = 25.0          NKF    = 0.5         TLEV   = 0
+TLEVC  = 1             XTB    = 0.00        TBF1   = 4.22E-3
+TBF2   = 0.00          TBR1   = 1.5E-4      TIKF1  = -3.9E-3
+CTC    = 8.65E-4       CTE    = 7.9E-4      TVJC   = 1.73E-3
+TVJE   = 1.53E-3       SUBS   = 1

 

[aryajur]

When using the vcvs to emulate an ideal opamp it does not exhibit the clipping at the high and low defined voltage limits, so it cannot be used as an ideal opamp. I would also like to know how to use it?