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TLV320ADC3120: Question about TLV3120ADC3120 single-ended input range

Genius 17485 points
Part Number: TLV320ADC3120

Hi Experts,

Seeking your assistance on this request from Cx:

TLV320ADC3120 power supply 1.8V, set to single-ended input mode, 10 kΩ input impedance, HPF setting 0.00025fs, input 2.5v peak-to-peak, 1.25v bias sine wave signal.

The ADC can normally sample the sine wave without distortion, which is inconsistent with the 0.5v RMS input range described in the manual under the 1.8V power supply. The following are the time domain and spectrograms during the test:

Please advise.

Regards,
Archie A.