Using Deep N Wells in Analog Design
WEBMay 7, 2015 · In summary, the use of deep N well devices can significantly reduce noise coupling between sensitive analog areas and more noisy digital regions in mixed-signal designs. ESSDERC 2012. Analog layout: Why wells, taps, and guard rings are crucial. Automating Analog Layout. Additional structures in analog layout beyond schematic.
ADC Guide, Part 13: Input Impedance - Planet Analog
WEBMar 18, 2013 · As we can see in Figure 1 , the input impedance of an ADC is not purely resistive. A switched capacitor input is basically the sample and hold stage of the ADC. Figure 2 shows the simplified sample and hold circuit. The capacitive part of the input impedance originates primarily by virtue of the sampling capacitor (C SAMPLE in …
An Analog Tutorial: Current sources - Planet Analog
WEBMar 28, 2019 · Figure 3. The Wilson Current Source is another three-transistor architecture current source. All transistors are identical (this is easy in an IC on a monolithic substrate) (See Reference 3) Adding another transistor (T4) will improve the accuracy and dynamic range of the current source as seen in Figure 4. Figure 4.
Layout Dependent & LOD Effects in Analog Design
WEBOct 9, 2014 · This stress affects carrier mobility in the devices and, hence, current. This is known as “length of diffusion” or LOD effect, where the characteristics of a device vary according to the distance of its gate from the diffusion edge. To design with LDE effects, various layout techniques can be used: Use similar diffusion size, shape ...
Planet Analog - All Signal No Noise
WEB3 days ago · 2021 (119) 2020 (44) Planet Analog provides an online community for semiconductor and system designers/engineers interested in advancing analog design techniques.
Matching in Analog Layout - Planet Analog
WEBMay 20, 2014 · Matching in Analog Layout. 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.
Designing with Chip Capacitors for High-Voltage Safety and …
WEBJun 3, 2018 · Comment 1. High-voltage Multi-Layer Ceramic Capacitors (MLCCs) are great for roles such as coupling, DC blocking, snubbing, or power-supply resonators. Their high volumetric efficiency delivers high capacitance values and high breakdown voltage within compact dimensions. A 1206 (imperial: 0.125” x 0.063”) chip …
Signal Chain Basics #148: Understanding the impact of offsets in …
WEBMay 29, 2019 · Always observe both the differential- and common-mode output signals to diagnose offset effects. The effects of the differential signal will not show any changes in the common-mode signal; conversely, the common-mode signal will not show any changes in the differential signal.
Analog rankings: Top 10 suppliers own 68% market share
WEBJun 8, 2022 · The report shows that the top-10 analog suppliers collectively accounted for 68% of analog sales in 2021. And six of the top 10 analog companies are based in the United States. Europe’s three major IC suppliers—Infineon, NXP, and ST—were among the top 10 analog suppliers in 2021, and they collectively accounted for 16% of the global ...
How to implement PWM fan driver using configurable chips
WEBFeb 14, 2022 · This design has 4 inputs and 1 output: PIN # 2 is for analog input to control the fan speed. PIN # 3 is for control mode selection input. PIN # 14 serves PWM input for direct control of the output driver. PIN # 17 serves shutdown input to disable the fan. PIN # 16 is for fault output, active low.