AD9220AR-REEL

Overview

The AD9220AR-REEL is a monolithic, single-supply 12-bit analog-to-digital converter from Analog Devices Inc., operating at a maximum sampling rate of 10.0 MSPS. It features a multistage differential pipelined architecture with digital output error correction logic to guarantee no missing codes over the full operating temperature range. The device integrates a high-performance sample-and-hold amplifier and a programmable voltage reference, supporting input spans of 2 Vp-p or 5 Vp-p. Typical power consumption is 254 mW with a single 5 V analog supply and a 3 V to 5.25 V digital supply. Key dynamic performance metrics include a Signal-to-Noise and Distortion Ratio (SINAD) of 70 dB and a Spurious-Free Dynamic Range (SFDR) of 86 dB.

Feature Summary

• Integrates a complete on-chip sample-and-hold amplifier and programmable voltage reference for simplified system design.
• Features a flexible analog input structure that supports both single-ended and differential configurations with varying input spans.
• Includes an out-of-range indicator signal to detect overflow conditions alongside straight binary output data.
• Utilizes a four-stage pipeline architecture with digital correction logic to ensure true 12-bit linearity.

Applications

• Imaging systems requiring high-speed data acquisition.
• Communications systems employing direct-IF down conversion.
• Medical instrumentation utilizing multiplexed channels.
• General-purpose data-acquisition systems.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure electrostatic discharge precautions are observed during handling, as the device is sensitive to static charges. Confirm that the digital supply voltage aligns with the target logic family requirements before integration into the final circuit design.

Selection Notes

Select this component when a balance between high speed and low power consumption is required for 12-bit resolution applications. Consider the AD9221 or AD9223 if lower sampling rates and reduced power dissipation are acceptable trade-offs for the same pinout and interface options. Evaluate the input span configuration to optimize distortion performance based on the specific common-mode voltage constraints of the application.

Part Context

This part belongs to the AD9221/AD9223/AD9220 product family, which shares identical interface options, packages, and pinouts. The family allows designers to select components based on specific performance, sample rate, and power requirements while maintaining hardware compatibility. The AD9220 represents the highest speed variant within this specific series, offering 10 MSPS throughput.

Replacement Considerations

The AD9221AR and AD9223AR are pin-compatible alternatives within the same family, offering lower sampling rates of 1.5 MSPS and 3.0 MSPS respectively. These substitutes provide reduced power consumption but exhibit different dynamic performance characteristics over frequency. Verify thermal and electrical specifications before substituting to ensure system requirements are met.

FAQ

What is the pipeline latency of the AD9220?

The device has a fixed pipeline delay or latency of three clock cycles.

How does the OTR signal function?

The Out-of-Range (OTR) signal indicates an overflow condition and can be used in conjunction with the most significant bit to determine whether the overflow is low or high.

Can the analog inputs be configured for single-ended operation?

Yes, the versatile on-board sample-and-hold amplifier allows for easy interfacing using either single-ended or differential input interfaces.