{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 11 - Lecture 11 OUTLINE Current Mirrors Reading...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Lecture 11 – Slide 1 EE105, Fall 2013 Prof. Ming C. Wu Lecture 11 § OUTLINE Current Mirrors § Reading: Chapter 9.2 Lecture 11 – Slide 2 EE105, Fall 2013 Prof. Ming C. Wu Temperature and Supply-Voltage Dependence of Bias Current § Circuits should be designed to operate properly over a range of supply voltages and temperatures. § For the biasing scheme shown below, I 1 depends on the temperature as well as the supply voltage, since V T and I S depend on temperature. CC BE V V S V R R R V e I I T BE 2 1 2 / 1 + =
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Lecture 11 – Slide 3 EE105, Fall 2013 Prof. Ming C. Wu Concept of a Current Mirror § Circuit designs to provide a supply- and temperature- independent current exist, but require many transistors to implement. à golden current source § A current mirror is used to replicate the current from a golden current source to other locations. Lecture 11 – Slide 4 EE105, Fall 2013 Prof. Ming C. Wu Current Mirror Circuitry § Diode-­‐connected Q REF produces an output voltage V
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}