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Analog Electronics — question 6 of 10

Write a real answer. It is graded against the question's rubric, and the mastery movement is computed by the same engine the product uses. Scoring here is deterministic rather than model-written, so this page costs nothing to run and nothing is saved. In a track built from your own posting, the same rubric is graded by the model, which is what produces feedback about your reasoning rather than about coverage.

You're budgeting noise for a signal chain: a 10kΩ source resistance feeding an op-amp with an input voltage noise density of 15nV/√Hz, over a 100kHz noise bandwidth. Walk through estimating the total input-referred RMS noise, and say whether it would meet a 10µV rms noise floor requirement.

This one resolves to a number. Give the value in the field below and your reasoning in the box — the number is checked exactly, by arithmetic.

mV

Units and SI prefixes are understood, including schematic notation: 4k7, 2.2 uF, 1.5e-3 A.

How sure are you?

Being confidently wrong costs more mastery than admitting a guess — that is deliberate, and it is how misconceptions get found.

Neither is graded, and nothing here is recorded.