Page 229 - A Practical Guide from Design Planning to Manufacturing
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Drain Drain
Transistor symbol Transistor symbol
Gate Gate
Source Source
N drain P drain
+ +
Spacer Spacer
poly gate P-well Gate voltage high poly gate N-well Gate voltage high Transistor OFF
N Oxide Transistor ON + P Oxide
Spacer Spacer
source N P source
− Transistor cross sections − Transistor cross sections
N drain P drain
+ +
Spacer Spacer
poly gate P-well Gate voltage low − poly gate N-well Gate voltage low NMOS and PMOS transistors.
N Oxide Transistor OFF P Oxide Transistor ON
Spacer Spacer
source N P source
− −
NMOS PMOS Figure 7-1
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