AD7887ARZ

Overview

The AD7887ARZ is a micropower, 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V supply and supports throughput rates up to 125 kSPS. The device features two single-ended analog inputs and an internal 2.5 V reference or external reference capability. It utilizes a successive approximation register (SAR) architecture with a serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The component is housed in an 8-lead MSOP package and is specified for operation across a temperature range of -40°C to +125°C.

Feature Summary

• Configurable dual-channel or single-channel operation via on-chip control register
• Integrated track-and-hold amplifier with automatic power-down capabilities
• Versatile serial interface supporting multiple standard protocols
• Low power consumption with shutdown mode drawing 1 μA maximum

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure compatibility with system voltage levels and serial communication protocols before integration. Check for automotive qualification requirements if applicable to the end application environment.

Selection Notes

Select this component when a small footprint and low power consumption are critical for 12-bit resolution applications. Consider the single-supply operation and flexible reference options for simplified circuit design. Evaluate the trade-off between throughput rate and power dissipation using the available power management modes.

Part Context

The AD7887 series includes variants in 8-lead narrow SOIC and MSOP packages. The ARZ suffix typically denotes the MSOP package variant with lead-free termination and RoHS compliance. Other versions may offer different thermal characteristics or pin configurations while maintaining identical electrical performance specifications.

Replacement Considerations

Direct parameter-equivalent substitutes include the AD7887ARZ. Verify pinout compatibility and package dimensions when replacing components to ensure mechanical fit within the existing PCB layout.