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ADXL327 buffering

Thread Summary

The user is using the ADXL327 accelerometer in a low noise application and needs to amplify its output voltage with an inverting op amp. Due to the ADXL327's 32kΩ output impedance, a unity gain buffer is recommended before the inverting amplifier. If DC coupling is not required, a non-inverting configuration with a capacitor in the feedback resistor can be considered. Supply voltage and current restrictions should be evaluated, and local FAE support is suggested for detailed analysis.
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Hi all,

i am using ADXL327 as accelerometer sensor in low noise application. I need to amplify its output voltage with an op amp put in inverting configuration which has low input resistance due to low noise concern.

The ADXL327 has an output impedance of 32kohm so do i need to put a unity gain buffer before the inverting amplifier?

Best regards

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