Please READ THIS too - especially before posting that parts 'look OK'. TV Repair / replacing electrolytic capacitors Off topic questions, and those fully answered in the Wiki, may be removed. Not sure if your question is on topic? Ask the mods before posting. advice for 'electronic' goods (audio, TV, computers, phones, battery chargers, domestic appliances etc.) - use: /r/appliancerepair, /r/electrical, /r/electricians, /r/askanelectrician, /r/techsupport etc.Ĭareer or certification advice - please post in /r/ece LEDs), appliance repairs & advice.īuying and general tech. Finally, offset cancellation technique is implemented in an operational amplifier (Op Amp) circuit with further analysis and comparison to prove the methodology.A subreddit for practical electronic engineering questions: Circuit and electronic component theory, component-level circuit design & repair, buying components, test gear and tools.Ĭommercial stuff (selling, paid work etc.) - see /r/ElectronicsList/ - Click HERE for our FAQ/Wiki -Įlectrical installation work and parts, home lighting (inc. The results are also plotted in a histogram to show the normal distribution of each scheme. A comparison of linearity and trimming range (TR) achieved with different trimming switch structures is performed to demonstrate advantages and disadvantages of each switch scheme. Afterwards, the results are collected and analyzed. Then an offset trimming algorithm, which is written on MATLAB, is applied to these circuits. The comparator and the offset auto-calibration circuits are designed using the GlobalFoundry 0.13μm process. Various trimming-switch structures are considered and compared, such as constant-sized drain switch (CDS), constant-sized gate switch (CGS), constant-sized source switch (CSS), binary-weighted source switch (BSS), and constant size split-source switch (SSS). The auto-calibration technique involves trimming of the comparator input transistor pair. This study analyzes the offset errors in a representative comparator structure and describes an auto-calibration technique to systematically and significantly reducing the offset. To guarantee the overall performance of an entire electronic system, offset-trimming techniques are often necessary to reduce inaccuracy. A comparator’s performance, or the accuracy of its output, is determined by the comparator’s offset voltage, which includes random offset and systematic offset. Comparators are one of the most fundamental building blocks in all electronic systems involving analog and digital information.
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