AD7866BRUZ-REEL7

Overview

The AD7866BRUZ-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, allowing simultaneous sampling of four single-ended channels via an internal multiplexer. It features a flexible serial interface compatible with SPI, QSPI, Microwire, and DSP standards. Power consumption reaches a maximum of 24 mW at 5 V and 11.4 mW at 3 V during operation. The component includes an onboard 2.5 V reference and is housed in a 20-lead TSSOP package.

Feature Summary

• Dual-channel architecture enabling simultaneous conversion of two independent ADCs with separate data outputs or combined serial output.
• Integrated track-and-hold amplifiers supporting input frequencies exceeding 10 MHz for high-speed signal acquisition.
• Flexible power management capabilities including partial and full power-down modes to minimize energy usage during idle periods.
• Configurable analog input ranges selectable between 0 V to VREF and -VREF to +VREF using the RANGE pin.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Portable instrumentation utilizing low-power SAR ADC technology.
• Data acquisition modules interfacing with microprocessors or DSPs via standard serial protocols.
• Battery-powered measurement devices requiring efficient power/throughput rate management.

Procurement Notes

Verify the specific revision level and temperature grade against project requirements before procurement. Confirm that the reel packaging matches the automated assembly specifications. Ensure compatibility with the system's logic voltage levels, as the digital interface operates based on the VDRIVE supply. Cross-reference the ordering information with official manufacturer documentation to validate part authenticity and availability status.

Selection Notes

Select this component when simultaneous dual-channel sampling is required within a compact surface-mount footprint. Evaluate the power budget carefully, considering the trade-off between throughput rate and current consumption in normal versus power-down modes. Ensure the external circuitry can support the specified reference voltage configuration and that the serial clock frequency aligns with the desired conversion time constraints.

Part Context

This part belongs to the AD7866 family of dual-channel SAR ADCs. It shares functional similarities with other Analog Devices precision converters but is distinct in its combination of dual-channel capability, high speed, and low power consumption. The BRUZ suffix indicates the commercial temperature range and TSSOP package type, differentiating it from other variants in the series.

Replacement Considerations

Direct replacements must match the dual-channel 12-bit SAR architecture and 20-lead TSSOP package. Verify that substitute components support the same 2.7 V to 5.25 V supply range and 1 MSPS throughput rate. Check for pinout compatibility and serial interface protocol support to ensure seamless integration without PCB redesign.