微電子電路microelectroniccircuit標(biāo)準(zhǔn)課件sedra著作(編輯修改稿)
2025-01-14 20:50 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 collector is electrically connected to the case. Therefore an electrically insulating but thermally conducting spacer is used between the transistor case and the “heat sink.” Microelectronic Circuits Fifth Edition Sedra/Smith 22 Copyright ? 2023 by Oxford University Press, Inc. Figure Electrical analog of the thermal conduction process when a heat sink is utilized. Microelectronic Circuits Fifth Edition Sedra/Smith 23 Copyright ? 2023 by Oxford University Press, Inc. Figure Maximum allowable power dissipation versus transistorcase temperature. Microelectronic Circuits Fifth Edition Sedra/Smith 24 Copyright ? 2023 by Oxford University Press, Inc. Figure Thermal equivalent circuit for Example . Microelectronic Circuits Fifth Edition Sedra/Smith 25 Copyright ? 2023 by Oxford University Press, Inc. Figure Safe operating area (SOA) of a BJT. Microelectronic Circuits Fifth Edition Sedra/Smith 26 Copyright ? 2023 by Oxford University Press, Inc. Figure A class AB output stage with an input buffer. In addition to providing a high input resistance, the buffer transistors Q1 and Q2 bias the output transistors Q3 and Q4. Microelectronic Circuits Fifth Edition Sedra/Smith 27 Copyright ? 2023 by Oxford University Press, Inc. Figure The Darlington configuration. Microelectronic Circuits Fifth Edition Sedra/Smith 28 Copyright ? 2023 by Oxford University Press, Inc. Figure The poundpnp configuration. Microelectronic Circuits Fifth Edition Sedra/Smith 29 Copyright ? 2023 by Oxford University Press, Inc. Figure A class AB output stage utilizing a Darlington npn and a pound pnp. Biasing is obtained using a VBE multiplier. Microelectronic Circuits Fifth Edition Sedra/Smith 30 Copyright ? 2023 by Oxford University Press, Inc. Figure A class AB output stage with shortcircuit protection. The protection circuit shown operates in the event of an output short circuit while vO is positive. Microelectronic Circuits Fifth Edition Sedra/Smith 31 Copyright ? 2023 by Oxford University Press, Inc. Figure Thermalshutdown circuit. Microelectronic Circuits Fifth Edition Sedra/Smith 32 Copyright ? 2023 by Oxford University Press, Inc. Figure The simplified internal circuit of the LM380 IC power amplifier. (Courtesy National Semiconductor Corporation.) Microelectronic Circuits Fifth Edition Sedra/Smith 33 Copyright ? 2023
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