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.
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 ...
Delta-sigma ADC basics: How the digital filter works
WEBFeb 10, 2015 · That’s how a basic ΔΣ data converter works. The modulation will take the quantization noise and shape it to have higher-frequency content. The digital filter removes high frequency noise while retaining the original input signal. The modulator and digital filter combine to give high-resolution measurements by oversampling the input.
Analog layout: Why wells, taps, and guard rings are crucial
WEBAug 23, 2021 · An N-well is constructed around and beneath the device’s P-well. The N-channel device operates in the P-well. Both the P-well and the deep N-well need to be tapped, but in many cases, both wells are protected with guard rings. This means that the device has two rings around it, greatly improving the isolation of …
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.
Latchup Prevention In CMOS - Planet Analog
WEBJan 14, 2015 · How To Avoid Latch-Up In CMOS. There are several ways to reduce the possibility of latchup: Reduce the beta of either or both parasitic devices. In practice this can be achieved by increasing the spacing between the devices, which increases the width of the lateral device. However, such increased spacing reduces packing density.
The Gold Standard of Analog Circuit Prose
WEBFeb 15, 2013 · The K2-W used power supplies of +300V for the tube anodes, -300V for the cathodes and grid bias, and 6.3VAC (or DC) for the filaments. It delivered 100kc (kHz) of bandwidth and an open-loop gain of 15,000 while driving +/-50V into a 50k load resistance. The schematic for the K2-W, in case you want to build your own.
Denso calls SiC a revolution in the bid for carbon neutrality
WEBNov 9, 2021 · Denso calling SiC semiconductors a major contributor to a low-carbon society is an important testimonial for this up-and-coming WBG technology. The Japanese automotive firm is aiming to achieve carbon neutrality in its manufacturing operations by 2035. Majeed Ahmad, Editor-in-Chief of EDN and Planet Analog, has covered the electronics design ...
PWM Pulse Width Modulation; Basics and Some Advanced Concepts
WEBMay 10, 2017 · Pulse Width Modulation (PWM) is a basic concept that is employed in many areas of electronics. PWM is a simple averaging method that is used in everything from microwave power percentages to LED dimming. The methods of implementation are also simple yet there are aspects that are quite complicated. One of …
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