Medical electronics market requires high performance ADC

2025-08-20 01:10:13

Release date: 2008-08-22

In modern electronic systems, the interface between analog and digital domains relies heavily on high-performance conversion technologies. In specialized fields like medical electronics, the demands on data converters are even more rigorous, requiring features such as high sampling rates, exceptional accuracy, minimal noise, low power consumption, cost-effectiveness, and compact form factors.

ADI recently launched the Precision 16-bit Successive Approximation (SAR) ADC, the AD7626, tailored for high-performance industrial and medical equipment that can process large volumes of data quickly while ensuring accuracy and reliability. This device is particularly well-suited for applications such as magnetic resonance imaging (MRI) and digital X-ray systems. By leveraging the speed and precision of PulSAR ADC technology, medical procedures can be carried out faster and more efficiently, reducing both MRI scan times and patient exposure to X-ray radiation.

The AD7626 delivers a remarkable 15-bit effective number of bits (ENOB) and operates at a sampling rate of 10-MSPS, significantly enhancing data acquisition performance. It offers a 92-dB signal-to-noise ratio (SNR), which is 8dB (equivalent to 1.3 bits) higher than other conventional ADC architectures. For applications that don't require the full 10-MSPS speed, the AD7626 can be configured in a multiplexed mode. For instance, in some medical imaging systems, it can be used in a dual-channel setup with each channel operating at 5-MSPS, allowing engineers to cut the number of ADCs in half and thereby lowering the overall bill of materials cost.

The AD7626 is housed in a compact 5mm x 5mm LFCSP package, making it 70% smaller than similar products and consuming just 130mW of power. It also features a self-synchronizing LVDS bus, which provides a low-noise interface and minimizes the need for external components, thus reducing board-level noise.

As part of ADI's PulSAR product family, the AD7626 is built on an ADC architecture that offers zero data latency—a crucial feature for precision data acquisition systems. This makes it ideal for applications where timing accuracy is essential.

Whether in medical diagnostics or industrial automation, the AD7626 represents a significant advancement in high-speed, high-accuracy data conversion. Its combination of performance, size, and efficiency makes it a compelling choice for next-generation electronic systems.

Source: Shanghai Medical Device Industry Association website

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