At analog input pins of LTC2381-16 is there any DC reference should be given?
LTC2381-16
Production
The LTC2381-16 is a low noise, low power, high speed 16-bit successive approximation register (SAR) ADC. Operating from a 2.5V supply, the LTC2381-16 has...
Datasheet
LTC2381-16 on Analog.com
At analog input pins of LTC2381-16 is there any DC reference should be given?
The common mode voltage (Vin+ + Vin-)/2 at the analog inputs must remain fixed at Vref/2 +/-50mV.
for zero level should i get 32767 sample?
With the inputs shorted together and tied to Vref/2, the ideal output code is all zeros. Figure 2 of the LTC2381-16 datasheet shows the transfer function.