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Forum Post: ADS1262EVM-PDK: ADCPro PGA1 Gain setting has no effect

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Part Number: ADS1262EVM-PDK ADCpro (on Windows 10 computer) linked to ADS126xEVM Rev A Test DAC output is connected to AIN6/AIN7 - these outputs are wired into AIN0/AIN1. Pos. Test Signal Supply Ratio is 0.5, Neg Test Signal Supply ratio is 0.45 - Single supply of 5.00V - DAC output is 250mV. Input MUX ADC1 is selected as AIN0/AIN1 and PGA1 Gain is 1 (Bypass is disabled) - acquire gives me readings around 0.24935. All ok so far. However I get the same reading if i change the PGA1 Gain to 2 (or 4 etc.). On the Register Map MODE1 seems fixed at 0x80. Why am I unable to change the gain?? Regards Keith

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