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Bonnie Baker

The practical magical first-order analog filter: Part 1

August 31, 2021 By Bonnie Baker

Finding the right analog filter to build a sensor circuit doesn’t have to be complicated. Understandably, the plethora of filter options can be overwhelming. Also, selecting a less-than-ideal filter may result in compromises, potentially increasing system cost, or affecting performance. To help simplify filter selection, this series of blogs explore key considerations when assessing your […]

Filed Under: Analog IC Tips, Analog ICs, FAQ, Featured Tagged With: FAQ

A look at intrinsic broadband noise spectral density

August 19, 2021 By Bonnie Baker

You can think of noise as an unwanted signal. This signal creates an error by combining with the desired signal in your circuit. Exterior sources can couple into your circuits, such as your 50 or 60 Hz DC mains signal or your cell phone. The starting point in your circuit’s noise evaluation is to reach […]

Filed Under: Analog IC Tips, Applications, FAQ, Featured, Telecommunications, Wireless Tagged With: FAQ

Squash 1/f noise with zero-drift amplifiers

August 11, 2021 By Bonnie Baker

There is a device that squashes all the 1/f voltage and current noise calculations with a chopper amplifier algorithm that corrects offset and drift characteristics. These amplifiers are zero-drift, auto-zero, or choppers that all achieve nanovolt-level offsets and extremely low offset drifts due to time and temperature. But back to our noise discussion, these devices […]

Filed Under: Analog IC Tips, FAQ, Featured Tagged With: FAQ

Including the often overlooked 1/f current noise

August 2, 2021 By Bonnie Baker

It is tempting to center your attention only on voltage noise when using operational amplifiers in the circuit. This impulse is attractive because the current noise is always well below the voltage noise specifications. But be careful. Don’t jump to conclusions without looking at all the elements in this noise challenge. This blog explores the […]

Filed Under: Analog IC Tips, Analog ICs, FAQ, Featured Tagged With: FAQ

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