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TLV320ADC3101-Q1: captured signal accuracy is higher than theoretical value

Part Number: TLV320ADC3101-Q1

Hello,

 Our customer used the TLV320ADC3101-Q1, input 200Hz 600mVpp sine signal, sampling rate is 16Khz.And captured the ADC 

Max value: 10887

Min:-9460

Calculated the Vpp=1000*(10887-(-9460))/2/32768 = 310.4705811mV. But the theoretical value  should be 300mV, so the error=(310.4705811-300)/300=3.49%

It looks like the accuracy is too high, in addition ,he also tested the other frequency spot, the results are:

Best regards

kailyn