ADC: Analog Digital Converters Successive Approximation Register (SAR)

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Transcript of ADC: Analog Digital Converters Successive Approximation Register (SAR)

ADC: Analog Digital Converters Successive Approximation Register (SAR)

Successive Approximation Register (SAR)

Sample and Hold Amplifier (SHA)

Cap charges to input voltage HOLDS it.

Time to Settle Down

Sets max speed of SHA

Binary Search

Vin

Advantages of SAR ADC

Accurate

Relatively Small

Sampling Rate

Image Credit• http://

www.maximintegrated.com/en/app-notes/index.mvp/id/1080• http://

www.analog.com/static/imported-files/tutorials/MT-090.pdf

• Sunix.com• Neil Young (Sample and Hold) https://

www.youtube.com/watch?v=vgjnHdsQFZM• The Samples (Nothing lasts for long)https://www.youtube.com/watch?v=WURwbU2Gd64