AD7887ARM-REEL7

Overview

The AD7887ARM-REEL7 is a micropower, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.7 V to 5.25 V and supports throughput rates up to 125 kSPS. The device features two single-ended analog input channels and utilizes a successive approximation register (SAR) architecture. It includes an internal 2.5 V reference or accepts external references between 1.2 V and VDD. The component communicates via a serial interface compatible with SPI, QSPI, Microwire, and DSP standards. It is housed in an 8-lead MSOP package and offers flexible power management options, including shutdown modes consuming as little as 1 μA.

Feature Summary

• Configurable for single-channel or dual-channel operation using on-chip control registers.
• Integrated track-and-hold amplifier with fast acquisition time of 500 ns.
• Versatile serial interface supporting multiple communication protocols.
• Flexible power management with automatic power-down after conversion.

Applications

• Battery-powered systems such as personal digital assistants and mobile communications.
• Medical instruments requiring low power consumption.
• Instrumentation and control systems.
• High-speed modems.

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to tape-and-reel packaging when sourcing components. Confirm that the A-grade version meets the required linearity specifications, particularly regarding integral and differential nonlinearity limits. Ensure compatibility with the target system's voltage levels and serial clock frequencies before integration.

Selection Notes

Select this component for applications requiring a small footprint and low power consumption in 12-bit resolution scenarios. Consider the MSOP package size if board space is limited. Evaluate the power management modes to optimize energy usage based on the required sampling rate and duty cycle of the application.

Part Context

The AD7887 is part of Analog Devices' family of micropower ADCs designed for portable electronics. It shares architectural similarities with other SAR converters but distinguishes itself through its integrated reference and flexible power modes. The ARM suffix indicates the MSOP package variant, while the REEL7 designation specifies the reel packaging format for automated assembly.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully if considering alternative manufacturers' devices.