AD7823YRMZ

Overview

The AD7823YRMZ 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 typical conversion time of 4 µs. The device incorporates inherent track-and-hold functionality with a pseudo-differential input structure, eliminating the need for external sampling circuits. It utilizes a high-speed serial interface compatible with standard microcontrollers. Key performance metrics include a signal-to-noise ratio of 48 dB minimum, differential nonlinearity of ±0.5 LSB, and integral nonlinearity of ±0.5 LSB. Power consumption varies significantly based on throughput, reaching 17.5 mW at maximum rates but dropping to 570 µW at 10 kSPS via automatic power-down modes.

Feature Summary

• Inherent track-and-hold functionality integrated within the ADC architecture.
• Automatic power-down mode triggered by the CONVST signal state at conversion end.
• Pseudo-differential analog input scheme allowing offset cancellation capabilities.
• Microcontroller-compatible serial interface requiring no external logic.

Applications

• Battery-powered test equipment requiring low power consumption.
• Hand-held portable applications needing space-saving ADC solutions.
• Battery-powered communications systems.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt, as the MSOP-8 form factor is sensitive to mechanical stress. Ensure storage conditions adhere to moisture sensitivity levels specified in the datasheet to prevent soldering defects during assembly.

Selection Notes

Select this component when an 8-bit resolution suffices for the application's accuracy requirements. Consider the AD7810 if a 10-bit upgrade path is needed without changing the footprint. Evaluate source impedance constraints carefully, as high impedance affects acquisition time and total harmonic distortion performance at higher throughput rates.

Part Context

The AD7823 belongs to the AD7823 series of low-power, high-speed ADCs from Analog Devices. It is designed for applications where power efficiency and small physical size are critical. The Y suffix indicates the industrial temperature range specification (-40°C to +125°C), while RMZ denotes the specific microSOIC package variant.

Replacement Considerations

The AD7810 is documented as a drop-in upgrade providing 10-bit resolution in the same package. Verify pin compatibility and software adjustments for increased resolution before substitution.