AD7823YRZ

Overview

The AD7823YRZ is an 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.7 V to 5.5 V and features a typical conversion time of 4 µs. The device incorporates inherent track-and-hold functionality with a pseudo-differential input structure. It utilizes a high-speed serial interface compatible with standard microcontrollers, supporting throughput rates up to 200 kS/s. Key performance metrics include a signal-to-noise ratio of 48 dB, differential nonlinearity of ±0.5 LSB, and integral nonlinearity of ±0.5 LSB. Power consumption is specified at 17.5 mW under nominal conditions, with lower dissipation achievable via automatic power-down modes.

Feature Summary

• Inherent track-and-hold functionality integrated within the 8-lead package architecture
• Automatic power-down mode triggered by conversion end states to minimize energy usage
• Microcontroller-compatible serial interface requiring no external logic components
• Pseudo-differential analog input scheme allowing for system offset removal

Applications

• Battery-powered test equipment requiring low-power analog-to-digital conversion
• Hand-held portable applications necessitating space-saving ADC solutions
• Battery-powered communications systems utilizing 8-bit accuracy requirements

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm the specific ordering suffix matches the required package type, as variations exist within the AD7823 family. Check current lifecycle status, as certain variants may be subject to obsolescence notices. Ensure environmental compliance documentation aligns with project specifications prior to final procurement decisions.

Selection Notes

Select this component when an 8-bit resolution with serial interface compatibility is required in a compact form factor. Consider the automatic power-down feature if operating in battery-constrained environments with variable throughput demands. Verify that the source impedance of the analog input signal remains low enough to meet the specified acquisition time constraints for accurate data capture.

Part Context

The AD7823 belongs to the Analog Devices AD7823 series of low-power, high-speed ADCs. This series offers various package options including SOIC, DIP, and microSOIC configurations. The Y variant specifically denotes the temperature range and linearity error specifications defined in the datasheet. It serves as a cost-effective solution for applications transitioning from parallel interfaces to serial architectures while maintaining moderate speed requirements.

Replacement Considerations

The AD7810 is documented as a drop-in upgrade option offering increased resolution. Verify pinout compatibility and software register adjustments when migrating between these specific part numbers within the same product family.