AD7887BRZ

Overview

The AD7887BRZ is a high-speed, low-power 12-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.25 V power supply and supports throughput rates up to 125 kSPS with a 2 MHz serial clock. The device features an on-chip track-and-hold amplifier that acquires signals in 500 ns and offers flexible configuration for either single-channel or dual-channel operation via its control register. It utilizes a successive approximation architecture and provides a straight binary output code compatible with SPI, QSPI, Microwire, and DSP interfaces. The component is housed in an 8-lead narrow SOIC package.

Feature Summary

• Configurable single-channel or dual-channel input modes via software control
• Integrated internal 2.5 V reference or support for external reference inputs
• Flexible power management including automatic shutdown after conversion
• Read-only ADC capability when the data input line 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 suffix 'BRZ' corresponds to the 8-lead narrow SOIC package variant rather than the MSOP option. Confirm RoHS compliance status and automotive qualification requirements against the latest manufacturer documentation before finalizing orders. Ensure voltage supply ranges match the specified 2.7 V to 5.25 V operational limits.

Selection Notes

Select this component for applications requiring a compact 12-bit resolution with minimal power dissipation. Consider the B version specifications for integral nonlinearity and differential nonlinearity performance metrics. Evaluate the need for dual-channel isolation if both analog inputs are utilized simultaneously in the design.

Part Context

The AD7887 series includes variants in both 8-lead narrow SOIC and 8-lead MSOP packages. The BRZ designation specifically identifies the SOIC package form factor. Other family members may differ in thermal characteristics or pinout compatibility despite sharing identical electrical performance parameters.

Replacement Considerations

AD7887ARZ serves as a parameter-equivalent alternative within the same product family.