Bench Talk

Bench Talk for Design Engineers | The Official Blog of Mouser Electronics

Precision Signal Chains Preserve Signal Integrity

On July 30, 2024 in All, General, Power by Analog Devices

Linear designers who need high precision, low input bias current, low offset voltage, low offset voltage drift, low noise, and rail-to-rail input and output should know about the ADA4510. In precision signal chains, this IC is ideal for sensing, conditioning, and output drive.

Tagged With: analog, high voltage, linear, low vos, mixed signal, op-amp, precision, signal chain

Watch the Feedback: An Introduction to Operational Amplifiers

On July 15, 2015 in Automation, Open Source by Mike Parks

Operational amplifiers (op amps for short) are one of the workhorse components of circuit design. They can be used in wonderfully simple but also incredibly complex ways, including audio pre-amplifiers, small signal sensor amplification, filters, and digital-to-analog converters (DAC) to name a few. Notice that these are all analog signal examples, not digital signals (i.e., not a stream of 0s and 1s.) analog signals are real-world, continuous signals that have, theoretically an infinite resolution.

Tagged With: Op Amp

Stupid Questions

On January 14, 2015 in All by Lynnette Reese

Every now and then our little group of engineers gets into philosophical arguments that go off into the weeds of extreme detail. A Dilbert comic catches this perfectly when a group of engineers argues about how to share two pizzas in a meeting. In our case, it started when I wanted to know the difference between an Instrumentation Amplifier (in-amp) and a Precision Amplifier. I know that an in-amp is a precision amp, but there must be something more if you have to rename it.

Tagged With: In-Amp, Op Amp, Precision Amplifier

Seeing The Light: A Circuit For Interfacing With Ambient Light Sensors

On November 12, 2014 in All, MultiSIM BLUE by Mike Parks

We built a smart mailbox, as related in an article, that had an ambient light sensor to detect when the mailbox door was opened. In that project we used a Vishay ambient light sensor (Mouser Part #782-TEPT4400) that acts very much like an NPN transistor, in fact the part is also referred to as a phototransistor. The difference being (when compared to a normal bipolar junction transistor) that instead of needing a base lead to setup the bias voltage, photons provide energy at the base-collector junction to turn the transistor on, thus allowing current flow from collector-to-emitter.

Tagged With: Ambient Light Sensor, MultiSIM Blue, Op-Amp, phototransistor, Vishay

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