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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