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AD7680ARM

AD7680ARM Description

The AD7680ARM from Analog Devices Inc. is a high-performance, 16-bit, 100kSPS successive approximation register (SAR) analog-to-digital converter (ADC). Designed for precision measurement applications, it features a single-ended input, 1:1 sample-and-hold (S/H) to ADC ratio, and operates with a 2.5V to 5.5V analog/digital supply range. Housed in an 8-pin MSOP package, this obsolete but reliable ADC is part of the PulSAR® series, known for its low power consumption and high accuracy. The device supports SPI and DSP-compatible interfaces, making it versatile for embedded systems. Its supply-referenced architecture simplifies design by eliminating the need for an external reference.

AD7680ARM Features

• 16-bit resolution for high-precision data acquisition.
• 100k samples per second (SPS) conversion rate.
• Single 2.5V to 5.5V supply operation (analog and digital).
• SPI/DSP-compatible serial interface for easy integration.
• Single-ended input with 1:1 S/H:ADC ratio.
• Supply voltage as reference, reducing external components.
• Surface-mount MSOP package, ideal for compact designs.
• Moisture Sensitivity Level (MSL) 1, suitable for extended storage.
• Low-power SAR architecture, balancing speed and efficiency.

AD7680ARM Applications

The AD7680ARM excels in applications requiring high-resolution, moderate-speed ADCs, such as:

• Industrial automation: Process control, sensor interfaces.
• Medical instrumentation: Portable diagnostic devices.
• Battery-powered systems: Energy-efficient data logging.
• Test and measurement equipment: Precision signal acquisition.
• Automotive systems: Sensor monitoring where reliability is critical.

Conclusion of AD7680ARM

Though marked obsolete, the AD7680ARM remains a robust choice for designers needing a 16-bit SAR ADC with low power consumption and simplified supply-referenced operation. Its SPI/DSP interface, single-supply compatibility, and compact form factor make it suitable for space-constrained, precision-oriented applications. While newer alternatives exist, the AD7680ARM’s proven performance ensures continued relevance in legacy or cost-sensitive designs.