The Ground Myth - Planet Analog
Nov 14, 2013 · A friend of mine told me years ago that there's no such thing as voltage. This was a real shock to me, because I had a voltmeter in the lab. He explained that Maxwell's equations, which are accepted as the basis for all electromagnetic (and therefore circuit) theory, include current, electric field, and magnetic field, but no voltage.
Matching in Analog Layout - Planet Analog
May 20, 2014 · Analog circuits often use structures like differential pairs and current mirrors, where the matching of device characteristics such as the threshold voltage V t is important. Circuits using these structures with device threshold differences of a few millivolts or less can determine the performance and yield of a design.
Planet Analog - All Signal No Noise
Jan 16, 2025 · Planet Analog provides an online community for semiconductor and system designers/engineers interested in advancing analog design techniques.
Put away that hot iron and try resistance soldering
Dec 17, 2024 · The image of the electrical engineer or hacker bent over and using a soldering iron on a circuit board is a classic visual cliché on TV and movies (Figure 1).Figure 1 The electrical engineer working on a circuit board with a soldering iron is an often-used image, with considerable truth. Source: Radio Shack of Bozeman
An SoC-like design model for the analog world? - Planet Analog
Nov 18, 2024 · Is the system-on-chip (SoC) model that emerged in the semiconductor industry more than two decades ago seeping into the analog world? It seems like that when you take a closer look at onsemi’s recently announced Treo platform. It’s an analog and mixed-signal platform built with bipolar-CMOS-DMOS (BCD) process technology on a 65-nm node.
New fab platform for SiC-based power MOSFETs - Planet Analog
Dec 19, 2024 · X-FAB, an analog/mixed-signal and specialty foundry, has launched a silicon carbide (SiC) process technology for power MOSFETs that delivers a significantly reduced cell pitch.
DAC BASICS, Part 6: DAC noise sources - Planet Analog
Jan 6, 2016 · In this noise calculation, there is the resistor string and the output amplifier’s feedback resistor (R FB).The feedback resistor, in combination with the output current (I OUT) and an external amplifier, creates the DAC’s output voltage.. For full-scale MDAC resistance, all switches connect to the V REF.This action causes associated currents to flow to the I OUT leg instead of ground.
Why 45 degrees? An overview of loop stability in operational …
Nov 26, 2024 · In operational amplifier stability, one rule of thumb is to allow 45 degrees of phase margin. Other design guidelines state that 60 degrees is best; still others say that 30 degrees is sufficient.
Analog in 3D ICs and through silicon vias (TSVs)
Nov 30, 2022 · Here is why the steady march toward 3D ICs and through silicon vias (TSVs) is becoming a a brisk jog and how this relates to analog design.
Analog in-memory compute tackles the AI inference conundrum
Nov 22, 2024 · An analog in-memory compute chip claims to solve the power/performance conundrum facing artificial intelligence (AI) inference applications by facilitating energy efficiency and cost reductions compared to high-performance CPU- and GPU-based systems.