**High-Precision Measurement with the AD7190BRUZ-REEL 24-Bit Sigma-Delta ADC**

In the realm of precision data acquisition, the **AD7190BRUZ-REEL stands as a benchmark for high-resolution measurement**. This 24-bit Sigma-Delta analog-to-digital converter (ADC), from Analog Devices, is engineered to deliver exceptional performance in demanding applications where accuracy and stability are paramount. Its core architecture is designed to minimize noise and maximize resolution, making it an ideal solution for precision sensor interfacing in industrial, scientific, and instrumentation systems.

The **true prowess of the AD7190 lies in its ultra-low noise programmable gain amplifier (PGA)**. With gains from 1 to 128, the ADC can directly amplify very small signal voltages from transducers like strain gauges, thermocouples, and RTDs without requiring extensive external signal conditioning. This integration simplifies design, reduces the component count, and enhances overall system reliability. The device offers a flexible choice of output data rates (from 4.7 Hz to 4.8 kHz) and a built-in clock, allowing designers to **optimize the trade-off between resolution and channel update rate** for their specific needs.

A key feature that distinguishes the AD7190 is its **on-chip digital filtering capabilities**. The Sigma-Delta modulator, combined with a sinc³ (or sinc⁴) digital filter, provides exceptional rejection of power supply noise at 50 Hz and 60 Hz and their harmonics. This ensures stable readings even in electrically noisy environments, which is a critical requirement for industrial weigh scales and precision medical equipment. Furthermore, the device includes diagnostic functions such as a **continuous background calibration and a watchdog function for monitoring the analog input voltage**, thereby enhancing the integrity of the measurement data.

For system integration, the AD7190 provides a simple serial peripheral interface (SPI)-compatible interface for communication with a host microcontroller or processor. Its ability to operate from a single analog supply (4.75 V to 5.25 V) and a digital supply as low as 2.7 V offers flexibility in mixed-voltage systems. The device is available in a compact 24-lead TSSOP package, making it suitable for space-constrained applications.

ICGOODFIND: The AD7190BRUZ-REEL is a comprehensive high-precision measurement solution that integrates a low-noise PGA, advanced digital filtering, and system monitoring features. It effectively **eliminates the need for complex external circuitry**, providing designers with a reliable, accurate, and simplified path to achieving 24-bit resolution for the most demanding low-frequency sensor measurement applications.

**Keywords:** High-Resolution ADC, Sigma-Delta Modulator, Programmable Gain Amplifier (PGA), Digital Filtering, Low-Noise Measurement.