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Forum Post: ADS1293: 3 lead ECG application with ADS1293

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Part Number: ADS1293 hi team my customer is generating a schematic for 3 lead ECG with the ADS1293 we'd like to check the following questions 1. can all the power source to the ADS1293 input at 3V ? (eg. VDD, RSTB, XTAL2, VDDIO) or must be at 3.3 and 5V? if 5V is needed is there a suggested boost IC that's commanded? (this will be 1S lithium battery application) 2. do we need RC filters before the input to IN1~IN4?? if yes, what's the suggested implementation? 3. in the figure 84, is the pin WCT and CLK not connected? is it ok to left it floating?

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