I'm designing part of an application that will consist of an Omron D6F-P0010A1 MEMS flow sensor. The analog output of the sensor will be connected to a TI ADS1114 ADC.
I'm trying to figure out from the respective datasheets whether I'm going to need a buffer in front of the ADC or not.
The datasheet for the Omron sensor doesn't mention source impedance anywhere, only that its charts were measured at a load resistance of 10k. The datasheet for the ADC specifies common-mode/differential input impedances of 3M and 2.4M at the scale I am likely to use.
I'd like to get accurate readings from the sensor, so do you think that a buffer will be necessary?