AD7866BRUZ

Overview

The AD7866BRUZ is a dual-channel, 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. 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 features two independent ADCs with integrated track-and-hold amplifiers capable of handling input frequencies exceeding 10 MHz. It includes an internal 2.5 V reference and offers flexible power management modes, including full shutdown. The component utilizes a high-speed serial interface compatible with SPI, QSPI, Microwire, and DSP standards, housed in a 20-lead TSSOP package.

Feature Summary

• Dual simultaneous sampling architecture with independent track-and-hold amplifiers for each channel
• Integrated 2.5 V reference with selectable external or internal reference configuration options
• Flexible power/throughput rate management allowing operation in partial or full power-down modes
• Standard successive approximation conversion process without pipeline delays

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation benefiting from low-power SAR architecture
• Medical equipment utilizing isolated or remote data collection methods
• High-speed serial communication interfaces in microprocessor-based systems

Procurement Notes

Verify the specific revision level and temperature grade against the manufacturer's current documentation before procurement. Confirm that the ordering suffix matches the required packaging format and lead-free status. Ensure compatibility with system voltage levels and serial clock frequencies. Cross-reference the part number with official distributor catalogs to validate authenticity and availability status.

Selection Notes

Select this component when simultaneous dual-channel conversion at 12-bit resolution is required. Evaluate power consumption requirements against the specified operational and shutdown currents. Verify that the serial interface timing meets the system's SCLK frequency constraints. Consider the thermal impedance and package size if operating near maximum temperature limits.

Part Context

The AD7866 belongs to the Analog Devices family of high-speed, low-power SAR ADCs. It is designed for applications demanding precise analog-to-digital conversion with minimal latency. The device complements other data converters in the portfolio by offering dual-channel capability within a compact surface-mount package.

Replacement Considerations

Consult the manufacturer's ordering guide for direct pin-compatible alternatives such as the AD7866ARU or AD7866BRU. Verify electrical specifications and package dimensions before substituting.