Double-poly Self-aligned BJT
32
description
Double-poly Self-aligned BJT. 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 (SiO 2 ) reduces base and emitter capacitance. Poly increases the β. - PowerPoint PPT Presentation
Transcript of Double-poly Self-aligned BJT
• 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.
