AD7896ARZ-REEL7

Overview

The AD7896ARZ-REEL7 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates from a single 2.7 V to 5.5 V supply and features an on-chip track-and-hold amplifier, internal clock, and high-speed serial interface. The device provides a throughput rate of 100 kS/s with an 8 µs conversion time in high sampling mode. It accepts a unipolar analog input range of 0 V to VDD, utilizing the supply voltage as the reference. Key electrical specifications include a signal-to-noise ratio of 70 dB, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±1 LSB. Typical power consumption is 9 mW.

Feature Summary

• Integrates a 12-bit SAR ADC, track-and-hold amplifier, and serial interface logic within an 8-lead package.
• Supports high-speed serial communication via SCLK and SDATA lines for easy microcontroller interfacing.
• Features automatic power-down mode that activates after conversion completion to minimize energy usage.
• Uses the VDD pin as the internal reference, eliminating the need for external reference components.

Applications

• Battery-powered portable instrumentation systems
• Industrial data acquisition subsystems
• Process control monitoring applications

Procurement Notes

Verify the specific suffix REEL7 indicates tape and reel packaging when sourcing components. Confirm the A version designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure compatibility with the required SOIC-8 footprint during procurement planning.

Selection Notes

Select this component for designs requiring a compact 12-bit solution with low power consumption. The integrated reference simplifies board layout compared to parts requiring external references. Consider the 100 kHz throughput limit when designing for higher speed requirements.

Part Context

This part belongs to the AD7896 family of 12-bit sampling ADCs. Variants such as AD7896JR offer commercial temperature ranges, while AD7896ANZ provides extended industrial options. The ARZ suffix typically denotes lead-free RoHS-compliant SOIC packaging within the Analog Devices portfolio.

Replacement Considerations

Direct replacements include other members of the AD7896 family such as AD7896AR or AD7896JR depending on temperature grade requirements. Verify pinout and software compatibility if substituting with different package variants.