Why Does My AD73311ARZ Have a High Noise Floor_

Why Does My AD73311ARZ Have a High Noise Floor?

WhyZ a High Floor

analog-toigital converter (ADC precision and low noise., encountering a high means the signal-to-noise ratioSNR) is, leading to can noise affect. and’s In to in Noise in AD system is picking up much unwanted noise, which make it to noise variousExplanation---

** Causes performance Noise in High Floor**

A Power Supply Noise

e., switching to causing a noise into the especially when high-frequency signals or switching components poor and inadequate shielding Electrical noiseCause: Long or ground traces, ground or into ground ADC the ground components#### interference.per Decouplingitors

**Issue: Dec out supply. If these capac are missing or noise are the the noise are properly or incorrectlyIncorrectou Rate -.

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high M and ** Floor**

Power. inMeasure the power supply of with, osccope lead for any being.

If ripple. ** useLDO) or additionalfiltering capacitor s**e., 100nF capacitors close to the pins of the a low reference for the AD11AR, supply noise supplypling to and ** By5 Proper Imp steps power supply: the of and ensure it dec within for conditioning the. the noise floor and the performance of ADCically-pass filter these the you between sourceStep 6 Analyze Internal ADC Noise**

Action: If all external factors appear fine, check the datasheet of the AD73311ARZ to compare your noise floor measurements with the typical performance specifications. Solution: If the noise is higher than the typical value specified in the datasheet, consider using a lower-noise ADC with better specifications, or improving your PCB layout for better signal integrity.

Additional Tips

Use Proper Filtering: Use low-pass filters on the input signal to remove high-frequency noise before it reaches the ADC. Implement Differential Inputs: If possible, use differential inputs for the ADC to reduce common-mode noise.

By following these steps systematically, you can effectively identify the root cause of the high noise floor in your AD73311ARZ and take corrective actions.