**AD7173-8BCPZ: A High-Resolution, Low-Noise Sigma-Delta ADC for Precision Measurement Systems**

In the realm of precision measurement, the performance of the analog-to-digital converter (ADC) is paramount. The **AD7173-8BCPZ from Analog Devices** stands out as a pinnacle of integration and performance, engineered specifically for the most demanding applications where exceptional accuracy and stability are non-negotiable.

This 32-bit sigma-delta ADC is architected around a core that delivers **unparalleled resolution and low-noise performance**. With an impressive effective resolution of up to **25.5 bits** and an ultra-low noise floor of just **90 nV rms** at its maximum data rate of 250 kSPS (with sinc5 + sinc1 filter), it is capable of resolving the most minute signal changes. This makes it an ideal solution for high-precision instruments such as precision weigh scales, strain gauge transducers, chromatographs, and laboratory equipment.

A key feature of the AD7173-8 is its **integrated programmable low-noise amplifier (PGA)**. With gains ranging from 1 to 128, it allows small sensor signals, such as those from bridge sensors or thermocouples, to be conditioned and digitized directly without the need for extensive external signal conditioning circuitry. This not only simplifies design but also enhances overall system reliability by reducing the component count.

Furthermore, the device incorporates a rich set of features that bolster its performance in complex systems. It includes **four differential or eight pseudo-differential analog input channels**, connected through a flexible input buffer. Its advanced digital filtering, including options for Fast Settling and simultaneous 50Hz/60Hz rejection, ensures excellent noise immunity in electrically noisy environments. The integrated precision 2.5 V reference and reference buffers further contribute to its high accuracy and system-level integration.

The combination of its high resolution, exceptional noise performance, and integrated features establishes the AD7173-8BCPZ as a cornerstone technology for designers building the next generation of precision measurement systems.

**ICGOODFIND:** The AD7173-8BCPZ is a top-tier sigma-delta ADC that masterfully combines ultra-high 32-bit resolution with industry-leading low noise, integrated signal conditioning, and robust digital filtering. It is the definitive component for engineers developing high-accuracy data acquisition systems where every microvolt matters.

**Keywords:** High-Resolution ADC, Low-Noise Performance, Sigma-Delta Modulator, Precision Measurement, Integrated PGA.