Category: Hardware
Product Number: ADXL354
Hi,
I should design a three-assembly accelerometer sensor + temperature using the ADXL354 sensor and a 24Bit Multisampling ADC converter. I would have identified the p/n AD7779.
I would like a suggestion on how to connect the 4 single-ended outputs of the ADXL354 on the 4 differential inputs of the ADC.
If I understood correctly I should:
- Connect the 1V8ANA output of ADXL354 to the +VREF input of AD7779. Connect -VREF to GND.
- Connect the four outputs to the corresponding four inputs AINP0, AINP1, AINP2 and AINP3. Connect AINN0, AINN1, AINN2 and AINN3 to GND.
- Power AVVD with 3V3, Power AVSS with -200mV to not lose reading dynamics from the sensor when its output is 0V.
Also I will not have all 24bit available but only 23 as the input is differential, correct?
Is there a more suitable 24bit adc converter for this application?
In your opinion using ADXL354 + AD7779 will give better results than using ADXL355 with integrated 20bit converter?
Davide F.