AD7866BRU-REEL7

Overview

The AD7866BRU-REEL7 is a dual-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates on a single supply voltage ranging from 2.7 V to 5.25 V and supports throughput rates up to 1 MSPS. The device integrates two independent ADCs with track-and-hold amplifiers capable of handling input frequencies exceeding 10 MHz. It features an internal 2.5 V reference, flexible power management modes including sleep and full power-down states, and a high-speed serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The component is housed in a 20-lead TSSOP package.

Feature Summary

• Dual simultaneous sampling and conversion capabilities for two channels
• Integrated low-noise track-and-hold amplifier with wide bandwidth
• Flexible power/throughput rate management with multiple shutdown modes
• On-chip 2.5 V reference with selectable external reference options

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Portable instrumentation utilizing battery-powered operation
• Medical equipment needing precise signal digitization
• Automotive sensor interfaces operating under varying temperature conditions

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to the reel packaging format required for your assembly line. Confirm that the B version meets the specified -40°C to +125°C operating temperature range for your application environment. Ensure compatibility with the 20-lead TSSOP footprint during PCB layout finalization.

Selection Notes

Select this component when simultaneous dual-channel acquisition at 12-bit resolution is required. Consider the internal 2.5 V reference if system design allows; otherwise, utilize the REF SELECT pin for external references. Evaluate the power consumption requirements against the available supply voltages between 2.7 V and 5.25 V to optimize efficiency.

Part Context

This part belongs to the AD7866 series of dual SAR ADCs from Analog Devices. It shares architectural similarities with other members of the family but is distinguished by its specific 12-bit resolution and 1 MSPS throughput specification. The BRU designation indicates the commercial temperature grade and TSSOP package type within the product lineup.

Replacement Considerations

Direct replacements include the AD7866ARU for identical electrical performance in the same package. Verify pinout compatibility and software register configurations when substituting with other dual-channel SAR ADCs from different manufacturers.