AD7823YR-REEL7

Overview

The AD7823YR-REEL7 is an 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and features a pseudo-differential analog input structure. The device incorporates inherent track-and-hold functionality and communicates via a high-speed serial interface compatible with standard microcontrollers. Key electrical specifications include a maximum throughput rate of 133 kSPS, a typical conversion time of 4 µs, and a signal-to-noise ratio of 48 dB. Power consumption varies significantly based on the operating mode, reaching up to 17.5 mW in continuous sampling mode but dropping to as low as 5 µW in power-down mode.

Feature Summary

• Inherent track-and-hold functionality eliminates the need for external holding capacitors.
• Automatic power-down mode allows the device to enter low-current states between conversions to optimize energy efficiency.
• Microcontroller-compatible serial interface enables direct connection without additional glue logic.
• Pseudo-differential input architecture supports offset cancellation techniques.

Applications

• Battery-powered test equipment requiring low-power analog-to-digital conversion.
• Portable handheld applications necessitating space-saving solutions.
• Battery-powered communications systems.

Procurement Notes

Verify that the specific ordering suffix corresponds to the SOIC-8 package variant rather than other available packages such as DIP or microSOIC. Confirm that the reel packaging aligns with automated assembly requirements. Ensure compatibility with the intended temperature range specifications before finalizing procurement decisions.

Selection Notes

Select this component when an 8-bit resolution is sufficient for the application's accuracy requirements. Consider the automatic power-down feature if battery life is critical at lower sampling rates. Verify that the source impedance of the driving circuit is low enough to meet the specified acquisition time constraints for optimal performance.

Part Context

This part belongs to the AD7823 series of 8-bit ADCs. It serves as a compact solution for applications requiring moderate speed and resolution. The Y version indicates specific linearity error characteristics defined within the datasheet. It offers a space-efficient alternative to higher pin-count converters while maintaining serial interface simplicity.

Replacement Considerations

The AD7810 is documented as a drop-in upgrade option providing 10-bit resolution within the same package footprint. Verify pinout compatibility and software register adjustments if migrating to higher resolution variants within the family.