lec12 mos transistors
TRANSCRIPT
Basic ELECTRONICS
(2+1)ENGR MUHAMMAD SHAKEEL AKRAM
ELECTRONICS ENGINEERING FICT, BUITEMS.
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MOS TRANSISTORS
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MOS TRANSISTROS
• METAL OXIDE SEMICONDUCTOR TRANSISTOR• Voltage controlled switch • Are of tow types
• Enhancement MOS• No structural channel • To operate nMOS positive VGS is applied
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MOS TRANSISTROS
• METAL OXIDE SEMICONDUCTOR TRANSISTOR• Voltage controlled switch • Are of tow types
• Depletion MOS• Structural channel • To operate nMOS negative VGS is applied
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MOS transistors
• Three terminals• Gate • Drain • Source
• Two types • nMOS• pMOS
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CMOS• Complementary MOS
• Technology to construct ICs.• Allow high density of logical functions• pMOS
• Used to make pull up network (PUN)• In PUN “+” suggests series and “ .” parallel • Passes zero (ground)• 0 to gate will on• 1 to gate will off
• nMOS• Used to make pull down network(PDN)• In PDN “.” suggests series and “ +” parallel • Passes one (Vcc)• 0 to gate will off• 1 to gate will on
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CMOS
• NOT gate • X = A
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CMOS
• AND gate
• X = A + B
• NAND gate
• X = A . B
• OR gate
• X = A . B
• NOR gate
• X = A + B
• XOR gate
• X = (A + B) . (A + B)
• XNOR gate
• X = (A + B) . (A + B)
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A/D CONVERSION CIRCUIT
• Analog to digital conversion• Which converts analog data into digital
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D/A CONVERSION CIRCUIT
• Digital to analog conversion• Which converts digital data into analog
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A/D and D/A CONVERSION CIRCUIT
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