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Modulation and simulation (MOD I1, Class A, S10) - IT
Modulation and simulation (MOD I1, Class A, S10) - IT

... A bitter rivalry between electricity-savvy inventors may sound fictional, but the tension between Thomas Edison and Nikola Tesla was real. Tesla championed alternating current, while Edison insisted that it was too dangerous. The only casualties in this "war of currents" were the animals Edison publ ...
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... This IC goes into a power saving state that reduces the current drain in the stop state. The power saving state is implemented by removing the bias current from most of the circuits in the IC. However, the 5V regulator output is provided in the power saving state. 5. Reference Clock Care must be tak ...
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Current mirror

A current mirror is a circuit designed to copy a current through one active device by controlling the current in another active device of a circuit, keeping the output current constant regardless of loading. The current being 'copied' can be, and sometimes is, a varying signal current. Conceptually, an ideal current mirror is simply an ideal inverting current amplifier that reverses the current direction as well or it is a current-controlled current source (CCCS). The current mirror is used to provide bias currents and active loads to circuits. It can also be used to model a more realistic current source (since ideal current sources don't exist).The circuit topology covered here is one that appears in many monolithic ICs. It is a Widlar mirror without an emitter degeneration resistor in the follower (output) transistor. This topology can only be done in an IC as the matching has to be extremely close and cannot be achieved with discretes.Another topology is the Wilson mirror. The Wilson mirror solves the Early effect voltage problem in his design.
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