AD7866ARUZ-REEL

Overview

The AD7866ARUZ-REEL is a dual-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from a single 2.7 V to 5.25 V supply and supports throughput rates up to 1 MSPS. The device features two independent ADCs with integrated track-and-hold amplifiers capable of handling input frequencies exceeding 10 MHz. It includes an on-chip 2.5 V reference and offers flexible power management through sleep modes. The component utilizes a high-speed serial interface compatible with SPI, QSPI, Microwire, and DSP standards. It is housed in a 20-lead TSSOP package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Dual simultaneous sampling and conversion capabilities with separate data outputs or combined serial access.
• Integrated low-noise track-and-hold amplifiers supporting wide bandwidth inputs.
• Configurable analog input ranges selectable via logic pins for straight binary or two's complement coding.
• Flexible power management allowing operation in normal, partial power-down, and full power-down modes.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing single-supply operation.
• Battery-powered measurement devices benefiting from low power consumption.
• Automotive sensor signal conditioning applications.

Procurement Notes

Verify the specific revision level and lot traceability upon receipt. Confirm that the 20-lead TSSOP package matches the design footprint requirements. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS structure. Validate that the ordering suffix corresponds to the intended reel packaging format.

Selection Notes

Select this component when simultaneous dual-channel conversion at 12-bit resolution is required. Consider the internal 2.5 V reference if external precision references are not available. Evaluate the serial interface compatibility with the host microcontroller. Assess power budget constraints against the specified current draw at the target throughput rate.

Part Context

This part belongs to the AD7866 family of dual SAR ADCs. It shares functional similarities with other Analog Devices precision converters but is distinct in its dual-channel architecture and specific serial interface timing. The ARUZ suffix indicates the A-grade version in a TSSOP package with extended industrial temperature ratings.

Replacement Considerations

Public confirmed substitute part numbers: None identified in verified documentation.