Transcription of Functional SPI Isolation - Analog Devices
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Functional SPI IsolationAssuming a constant ground voltage helps us analyze circuits, but it is not necessarily A combination of parasitic inductance and large high frequency currents creates voltage noise on circuit grounds. For example, large high frequency currents flowing through a ground reference can result from thousands of transistors in digital circuitry switching simultaneously. This is bad news for sensitive Analog components, such as a Analog -to-digital converters (ADC) that use the digital components ground. It is important to provide a clean ground reference for Analog components. Implementing a multipoint grounding system and filtering the Analog circuits supply connections are useful techniques.
Functional SPI Isolation. Assuming a constant ground voltage helps us analyze circuits, but it is not necessarily accurate. 1. A combination of parasitic inductance and large high
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