**AD7986BCPZ: A 1 MSPS, 18-Bit, Pseudo-Differential SAR ADC for Precision Data Acquisition Systems**

In the realm of precision data acquisition, the **analog-to-digital converter (ADC)** serves as the critical bridge between the analog physical world and the realm of digital processing. The **AD7986BCPZ from Analog Devices** stands out as a premier solution, expertly engineered to deliver high resolution and speed in a compact form factor. This 18-bit, 1 MSPS successive approximation register (SAR) ADC is designed to meet the stringent demands of applications ranging from industrial instrumentation and medical imaging to automated test equipment and spectrum analysis.

At the core of the AD7986BCPZ's performance is its **pseudo-differential input architecture**. This design offers a compelling advantage by rejecting common-mode noise, a common challenge in electrically noisy environments, while simplifying the front-end design compared to a fully differential setup. The device achieves outstanding **AC and DC performance**, featuring exceptional signal-to-noise ratio (SNR) and total harmonic distortion (THD), ensuring that even the most subtle signals are captured with integrity.

A key attribute of this ADC is its **low power consumption and ease of use**. Operating from a single 2.5 V power supply, it consumes a mere 13.5 mW at 1 MSPS, making it suitable for portable and power-sensitive systems. Its simple serial peripheral interface (SPI) allows for straightforward connection to a wide array of microcontrollers, FPGAs, and digital processors. Furthermore, the inclusion of a versatile reference input offers designers flexibility, allowing the use of an external reference for optimized performance across different temperature ranges.

Housed in a tiny 3 mm × 3 mm LFCSP package, the AD7986BCPZ demonstrates that high performance does not require a large footprint. This small size is invaluable for space-constrained designs without compromising on accuracy or speed. Its robust design ensures reliable operation and high precision, establishing it as a cornerstone component for engineers developing next-generation measurement systems.

**ICGOODFIND**

The AD7986BCPZ is a high-performance, compact SAR ADC that masterfully balances 18-bit resolution with 1 MSPS speed. Its pseudo-differential input, low power operation, and excellent noise performance make it an ideal and reliable choice for advanced precision data acquisition systems across multiple industries.

**Keywords:**

1. **SAR ADC**

2. **18-Bit Resolution**

3. **Pseudo-Differential**

4. **1 MSPS**

5. **Low Power Consumption**