cmos invertors lecture #3. step 1: select foundary

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CMOS Invertors Lecture #3

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Page 1: CMOS Invertors Lecture #3. Step 1: Select Foundary

CMOS Invertors

Lecture #3

Page 2: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 1: Select Foundary

Page 3: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 2: Select Foundary

Page 4: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 3: n+ Diffussion

Page 5: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 4: Polysilicon

Page 6: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 5: n+diff and Metal Contact

Page 7: CMOS Invertors Lecture #3. Step 1: Select Foundary

• This Completes nMOS design

• Now go for pMOS Design, and the first need is to construct N Well

Page 8: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 6: Create N Well

Page 9: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 6: p+ Diffusion

Page 10: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 7: Polysilicon

Page 11: CMOS Invertors Lecture #3. Step 1: Select Foundary

Step 8: Contacts

Page 12: CMOS Invertors Lecture #3. Step 1: Select Foundary

Final Connections

• pMOS Completed

• Now Interconnection of pMOS and nMOS to complete inverter

• Connect Source of pMOS to VDD and Source of nMOS to VSS.

• Short the Drain of both pMOS and nMOS.

Page 13: CMOS Invertors Lecture #3. Step 1: Select Foundary

INVERTER: Complete Design

Page 14: CMOS Invertors Lecture #3. Step 1: Select Foundary

Check DRC

Page 15: CMOS Invertors Lecture #3. Step 1: Select Foundary

Assign Source

• Assign Signal (Clock) to Gate Terminal

• Add Visible node at Output

Page 16: CMOS Invertors Lecture #3. Step 1: Select Foundary

Inverter with Source

Page 17: CMOS Invertors Lecture #3. Step 1: Select Foundary

Run Simulation

Page 18: CMOS Invertors Lecture #3. Step 1: Select Foundary

VTC Characteristics