AD9221ARZ-REEL

Overview

The AD9221ARZ-REEL is a monolithic 12-bit analog-to-digital converter manufactured by Analog Devices Inc. It operates at a maximum sampling rate of 1.5 MSPS with a typical power dissipation of 59 mW. The device features a single 5 V analog supply and a digital supply range of 2.7 V to 5.25 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 70.2 dB, Integral Nonlinearity (INL) of ±1.25 LSB max, and Differential Nonlinearity (DNL) of ±0.75 LSB max. It utilizes a parallel straight binary output interface and supports both differential and single-ended analog inputs.

Feature Summary

• Monolithic 12-bit pipeline architecture with on-chip sample-and-hold amplifier
• Flexible analog input configuration supporting single-ended or differential modes
• Integrated programmable voltage reference with external reference capability
• Out-of-range indicator for overflow detection

Applications

• Imaging systems requiring high-speed data acquisition
• Medical instrumentation and diagnostic equipment
• Communications systems employing direct IF down conversion
• Industrial process control and data-acquisition systems

Procurement Notes

Verify the REEL suffix indicates tape and reel packaging rather than tube packaging when sourcing components. Confirm the ARZ designation corresponds to the industrial temperature range and RoHS compliance status required for the specific manufacturing environment. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS circuitry.

Selection Notes

Select this component when a 1.5 MSPS sampling rate is sufficient for the application bandwidth requirements. Consider the AD9223 or AD9220 if higher sampling speeds up to 10 MSPS are necessary, noting the associated increase in power consumption. Evaluate the input span requirements against the internal reference options to determine if an external precision reference is needed for improved DC accuracy.

Part Context

This part belongs to the AD9221/AD9223/AD9220 product family, which shares identical pinouts, packages, and interface options. The family allows for upward or downward selection based on speed and power trade-offs while maintaining design compatibility. The AD9221 specifically targets applications prioritizing lower power consumption over the higher speeds offered by its siblings.

Replacement Considerations

The AD9223ARSZ and AD9220ARSZ are pin-compatible alternatives within the same family offering higher sampling rates. Verify that the increased power dissipation of these substitutes is acceptable for the thermal design.