• B-C area small, small C.• B-E area small, small C.• Extrinsic base regions short
and heavily doped, reducing R.• Self-alignment allos reduction
of area, and reduction of base area.
• Oxide (SiO2) reduces base and emitter capacitance.
• Poly increases the β.
Double-poly Self-aligned BJT
ECL buffer/inverter
Course Outline
Review on Tuesday – Send me questions by e-mail and I will cover/answer in class.
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