AD9226ARS

Overview

The AD9226ARS is a monolithic, single-supply, 12-bit analog-to-digital converter featuring a 65 MSPS sampling rate. It utilizes a multistage differential pipelined architecture with patented input stage and output error correction logic to ensure accuracy without missing codes across the full operating temperature range. The device integrates a high-performance sample-and-hold amplifier and voltage reference. It operates on a single 5 V analog supply (AVDD) and supports a 3 V or 5 V digital driver supply (DRVDD). Key specifications include a Signal-to-Noise Ratio of 69 dB at 31 MHz input frequency, Spurious-Free Dynamic Range of 85 dB, and low power dissipation of 475 mW.

Feature Summary

• Patented on-chip sample-and-hold amplifier with full power bandwidth of 750 MHz for superior IF undersampling performance.
• Integrated clock duty cycle stabilizer makes conversion immune to varying clock pulsewidths.
• Programmable internal voltage reference or external reference input capability for system design flexibility.
• Straight binary or two's complement output data format selectable via mode pin.

Applications

• Single-channel communication systems utilizing IF undersampling schemes.
• Imaging systems requiring high-speed analog-to-digital conversion.
• Data-intensive applications demanding low power consumption and high linearity.

Procurement Notes

Verify the specific ordering suffix to confirm package type and temperature range. The AD9226ARS designation corresponds to the 28-lead SSOP package with an operating temperature range of -40°C to +85°C. Ensure compatibility with existing board layouts as this component is pin-compatible with other members of the AD922x family, such as the AD9220, AD9221, AD9223, AD9224, and AD9225.

Selection Notes

Select the AD9226ARS when a 12-bit resolution and 65 MSPS speed are required in a compact surface-mount package. Consider the 28-lead SSOP form factor for space-constrained designs compared to the 48-lead LQFP option. Evaluate power requirements against the 475 mW typical dissipation and ensure appropriate thermal management for the SSOP package. Confirm that the single 5 V analog supply and separate digital driver supply align with the system power architecture.

Part Context

The AD9226 is part of Analog Devices' high-speed ADC portfolio, designed for applications balancing speed and precision. It belongs to a family of pin-compatible devices including the AD9220 through AD9225, allowing for design flexibility across different resolution and speed requirements within the same footprint. The AD9226 specifically targets the 12-bit, 65 MSPS segment of the market.

Replacement Considerations

The AD9226ARS is pin-compatible with the AD9220, AD9221, AD9223, AD9224, and AD9225. Substitution should be verified against specific performance parameters such as SNR, SFDR, and power consumption, as these vary across the family. Ensure the replacement device meets the required input span and reference configuration needs.