AD7887ARMZ-REEL7

Overview

The AD7887ARMZ-REEL7 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It features two single-ended input channels and operates on a single supply voltage ranging from 2.7 V to 5.25 V. The device supports a maximum throughput rate of 125 kSPS with a full-power bandwidth of 2.5 MHz. It utilizes an SPI/QSPI/MICROWIRE/DSP compatible serial interface for data transfer. Key performance metrics include a signal-to-noise ratio of 71 dB, integral nonlinearity of ±2 LSB, and differential nonlinearity of ±2 LSB. Power consumption is typically 3.5 mW in normal mode, with a shutdown current of 1 μA maximum.

Feature Summary

• Configurable dual-channel or single-channel operation via internal control register
• Integrated 2.5 V reference with capability for external reference overdrive
• Flexible power management including automatic shutdown after conversion
• Read-only ADC capability when DIN pin is tied to ground

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 containing 3000 units per reel. Confirm that the component meets automotive qualification standards if required for the target application environment. Ensure compatibility with the system's voltage levels and serial communication protocols before integration.

Selection Notes

Select this component for applications requiring a small 8-lead MSOP package footprint combined with low power dissipation. It is suitable for designs needing either a single high-speed channel or two lower-speed channels. Consider the internal reference stability versus external reference requirements based on system noise sensitivity.

Part Context

This part belongs to the AD7887 series of micropower, 12-bit ADCs. It is functionally identical to the AD7887BRZ but packaged in MSOP format rather than SOIC. The REEL7 suffix indicates it is supplied in a standard tape-and-reel configuration for automated assembly processes.

Replacement Considerations

The AD7887ARZ is a parameter-equivalent alternative within the same family. Verify pinout compatibility and ensure the replacement package matches the PCB footprint constraints.