1. 6-BIT THERMOMETER CODER
SIDDHARTH VERMA
SAURABH PURI
KAPIL SETHI
TAE-YOON PARK
ADVISOR: Dr. DAVID PARENT
DATE:8th May,2006

2. OUTLINE INTRODUCTION Theory of Thermometer Coder..
Why we use Thermometer Coder..??
SPECIFICATONS
DESIGNING
RESULTS
CONCLUSION

3. INTRODUCTION WHY THERMOMETER CODER? High Conversion Speed
Main block in Digital to Analog Converter.
Converts the binary weighted digital input bits into a thermometer coded outputs.
Applications
WHY THERMOMETER CODER?
High Conversion Speed
Very Good Dynamic Performance
Logic Minimization

4. Specifications: Power Consumption=0.49mW Area=1120*500
Input clock at 200 MHz
Outputs to derive 20 fF each
Technology- “AMIO6”

6. NC Verilog Simulation

7. NC VERILOG SIMULATION (Cont..)

8. Longest Path Calculation

9. 6 Bit Thermometer Decoder Layout

10. Verification

11. Thermometer Coder Extracted View

12. WAVEFORMS

13. OUTPUT WAVEFORMS

19. COST ANALYSIS Time spent on each phase of the project:
Verifying logic Weeks
Schematic sizing Week
Verifying Timing Week
Layout Weeks
Post Extracted Timing Days

20. Lessons learned Start working early on the project. Working in a team.
Careful while doing the layout part.
More you enjoy working on the project the more you will learn.

21. CONCLUSION The 6-bit thermometer coder works at 200Mhz clock frequency
The project drives 63 outputs with each driving a 20fF load capacitance
Meets all timing specifications

22. Acknowledgements
Thanks to Prof. David Parent for his support & guidance.
Thanks to Cadence Design Systems for providing us wonderful labs.