This programmable gain amplifier (PGA) is specifically crafted for distributed acoustic sensing (DAS) applications, enhancing the analog front end (AFE) by offering scalable signal amplification appropriate for diverse sensor networks. It is vital in transforming weak acoustic signals for effective analysis in DAS systems.\n\nThe PGA supports detection and monitoring over extensive areas, a feature crucial for seismic activity, perimeter security, and pipeline monitoring applications. This amplification capability improves the data fidelity of distant or faint acoustic signals, crucial for precise and actionable insights.\n\nFabricated using UMC's 55nm process technology, it delivers superior performance with low power demands, ensuring enduring and efficient operation in expansive, distributed acoustic sensing environments under challenging conditions.