AD9220ARS

Overview

The AD9220ARS is a monolithic, single-supply 12-bit analog-to-digital converter 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 across the full operating temperature range. The device integrates a high-performance sample-and-hold amplifier and a programmable voltage reference. It operates on a single 5 V analog supply and accepts a digital supply between 2.7 V and 5.25 V. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 70 dB, Integral Nonlinearity (INL) of ±0.5 LSB typical, and Differential Nonlinearity (DNL) of ±0.3 LSB typical. Power consumption is typically 250 mW.

Feature Summary

• Integrates a wideband input sample-and-hold amplifier and a programmable internal voltage reference for simplified system design.
• Utilizes a four-stage differential pipelined architecture with digital correction logic to ensure true 12-bit linearity without missing codes.
• Offers flexible analog input configurations supporting both single-ended and differential modes with varying input spans.

Applications

• Imaging systems requiring high-speed data acquisition
• Communications systems employing Direct-IF down conversion
• Medical instrumentation and general-purpose data-acquisition systems

Procurement Notes

Verify the specific ordering suffix 'RS' confirms the 28-lead SSOP package variant. Confirm that the component meets the required -40°C to +85°C industrial temperature range specifications. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS process. Cross-reference the manufacturer's current lifecycle status as older revisions may be subject to discontinuation.

Selection Notes

Select the AD9220ARS when a 10.0 MSPS sampling rate is required compared to the lower speed variants in the family. Consider the power dissipation trade-off, as this model consumes more power than the AD9221 or AD9223 to achieve higher bandwidth. Verify that the 5 V single-supply operation aligns with the system's power infrastructure constraints.

Part Context

This component belongs to the AD9221/AD9223/AD9220 product family, which shares identical pinouts, packages, and interface options. The family allows designers to select components based on specific requirements for sampling rate, power consumption, and dynamic performance while maintaining hardware compatibility.

Replacement Considerations

The AD9221AR and AD9223AR are pin-compatible members of the same family but operate at lower sampling rates of 1.5 MSPS and 3.0 MSPS respectively. These may serve as downward selection alternatives if lower power consumption is prioritized over speed.