An app note from Analog Devices: Build precise S/H Amps for fast 12 Bit ADCs (PDF!) S/h amplifier circuits will use one of several standard architectures: closed-loop or open-loop, and inverting or noninverting configurations. No matter what circuit type designers … Read more
Tag Archives: Analog Devices
Analog Devices, Inc. (ADI) released a new version of its popular ADIsimRF design tool: The free design tool is the software accompaniment to ADI’s complete portfolio of RF-to-digital functional blocks, allowing engineers to model RF signal chains using devices from … Read more
Here’s a series of video tutorials on filtering from Analog Devices. First in the series (embedded above) covers simple single pole filters made out of resistors and capacitors. The series moves onto active filtering with op-amps, and finishes with multi-pole … Read more
Here’s a web video series from Analog Devices describing thermocouples (TC) and how to get the most out of them. TC is a temperature sensor that outputs a voltage dependent on the temperature difference between these two ends.
Tim Kerby notes that there is now a Wiki for the Analog Discovery with lots of fantastic training materials. Check it out! Via the contact form.
Here’s an article from Analog Devices going into the details of high-speed PCB layout design. While the article mainly focuses on analog electronics, lots of good tips can be picked up for digital designers as well. Intelligent circuit-board layout is … Read more
Analog Devices describes why it’s a bad idea to drive capacitive loads with op amps. If you’re forced to drive a capacitive load, this video also provides a possible solution to the stability issues.
Here is an article from Analog Devices discussing the theory and application of detecting human falls with 3-axis accelerometers. While the article focuses on the ADXL345 3-axis accelerometers, the theory and principle behind it can be applied to other devices … Read more
Here’s an article from Analog Devices detailing the differences between current-sense amplifiers and difference amplifiers in high side current measurement. Current sense amplifiers offer measurement of the instantaneous current, while difference amplifiers offer average current measurements. While current-sense amplifiers offer … Read more
How HDTV systems impact audio noise, and how to limit it: Ensuring a pop and click free audio signal chain requires careful design on behalf of both the hardware engineer and software engineer. This article discusses how hardware system and … Read more
Here’s an FAQ from Analog Devices regarding proper grounding techniques. Engineer Walt Kester answers questions with references and schematics to better explain his points. All in all, a very good read that might help you catch stray signals problems in … Read more
Analog Devices explains when the maximum supply current given by the datasheet could lead you astray: For most integrated circuits, a maximum supply current is listed on the data sheet. Often overlooked are the measurement conditions. For some rail-to-rail output … Read more
Sequentially connecting optocouplers for better isolation slows things way down, digital isolators don’t suffer as much. The advantages of digital isolators over opto-couplers [PDF!] in layered isolation: Creating double insulation barriers with sequential optocouplers is problematic because the data integrity … Read more
Analog Devices discusses ground loops and how to manage them: Transmitting data over long distances is fraught with potential problems. A ground loop can be a source of interference that can induce a noise voltage between the grounds on either … Read more
Analog Devices discusses the sensitivity of analog and digital microphones. Sensitivity, the ratio of the analog output voltage or digital output value to the input pressure, is a key specification of any microphone. Mapping units in the acoustic domain to … Read more
Here is a design article from EETimes about the common inter-IC audio protocols. The article covers the traditional audio signal chain, fully digital audio signal chains, I2S protocol, and PDM. As audio integrated-circuit (IC) designs move to finer geometries, it … Read more
Analog Devices describes the fundamentals of working with digital-to-analog converters: This tutorial outlines some important issues regarding DAC interface circuitry including the voltage reference, analog output, data input, and clock driver. Because ADCs require references and clocks also, most of … Read more
Bearmos tipped us about this reference design from Analog Devices for high-performance, low cost weigh scales. The design uses load-cell, and a load-cell ADC AD7799. The trend in weigh scales towards higher accuracy and lower cost has produced an increased … Read more
Ian Griffiths writes to inform us of this Op Amp Selection Guide available from Analog Devices. This 58-page PDF offers a complete overview of their product offerings. As Ian G. points out, “it has 3 pages devoted to different terms … Read more
Looking for a clean power supply for a sensitive analog circuit? Analog Devices describes the sources of noise in LDO voltage regulators, and provides some examples to limit and combat the noise. In general, LDO noise comprises two components: intrinsic, … Read more