**AD7667ASTZRL: A 16-Bit, 1 MSPS Pseudo Differential PulSAR ADC for Precision Data Acquisition Systems**

In the realm of high-performance data acquisition, the accuracy and speed of analog-to-digital conversion are paramount. The **AD7667ASTZRL** from Analog Devices stands as a pivotal component, engineered to meet the rigorous demands of precision applications. This 16-bit, 1 MSPS (Mega Sample Per Second) successive approximation register (SAR) ADC combines high resolution with impressive throughput, making it an ideal choice for systems where **exceptional dynamic performance and low power consumption** are critical.

A defining feature of the AD7667ASTZRL is its **pseudo differential input structure**. This architecture offers a compelling advantage over single-ended inputs by providing improved noise immunity and the ability to reject common-mode noise, which is ubiquitous in industrial environments. While not a fully differential design, this pseudo differential approach effectively handles signals referenced to a common ground, simplifying system design without sacrificing performance. This makes the converter exceptionally well-suited for applications such as medical instrumentation, industrial process control, and high-end data acquisition cards.

At its core, the ADC utilizes the **PulSAR® technology**, Analog Devices' proprietary implementation of the SAR architecture. This technology is renowned for its precision and deterministic operation. Unlike delta-sigma (ΔΣ) ADCs that require a settling time for their digital filters, the PulSAR ADC provides a single conversion result with no pipeline delay. This feature is indispensable in multi-channel multiplexed systems or any application where **signal phase integrity is non-negotiable**.

The device operates from a single 5 V power supply and consumes a mere 115 mW of power during normal operation, with power-down modes available for further energy savings in portable or battery-powered equipment. Its **integrated high-performance reference buffer and a robust parallel interface** simplify the design-in process, reducing both external component count and overall system cost. The AD7667ASTZRL guarantees outstanding ac performance, including a superb signal-to-noise ratio (SNR) of typically 91 dB and very low total harmonic distortion (THD), ensuring that even the most subtle details of the input signal are captured faithfully.

**ICGOOODFIND**: The AD7667ASTZRL is a high-performance 16-bit ADC that delivers 1 MSPS throughput with outstanding accuracy and noise performance. Its pseudo differential inputs and PulSAR architecture make it a versatile and reliable solution for complex, multi-channel precision data acquisition systems across medical, industrial, and test and measurement markets.

**Keywords**: **16-Bit Resolution**, **1 MSPS**, **Pseudo Differential Input**, **PulSAR ADC**, **Low Power Consumption**.