AD7823YRM

Overview

The AD7823YRM is an 8-bit successive approximation analog-to-digital converter (ADC) housed in an 8-lead microSOIC package. 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 with a maximum throughput rate dependent on the serial interface speed. The device includes inherent track-and-hold functionality, a pseudo-differential analog input, and a high-speed serial interface compatible with most microcontrollers. Power consumption is optimized via an automatic power-down mode, achieving as low as 570 µW at 10 kSPS. The part is specified for operation over a temperature range of –40°C to +125°C.

Feature Summary

• Inherent track-and-hold functionality with pseudo-differential input architecture
• Automatic power-down mode triggered by CONVST signal state at end of conversion
• High-speed serial interface requiring no external logic for microcontroller connection
• Single-supply operation eliminating need for negative voltage rails

Applications

• Battery-powered test equipment requiring 8-bit accuracy
• Hand-held portable applications necessitating low power consumption
• Battery-powered communications systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or direct manufacturer channels. Confirm the specific ordering suffix corresponds to the required package type, as the AD7823 series includes DIP, SOIC, and microSOIC variants. Ensure the requested unit matches the active production status or obsolescence notice provided by the supplier. Request original datasheets to validate revision levels before finalizing procurement orders.

Selection Notes

Select the AD7823YRM when space constraints require an 8-lead microSOIC footprint combined with low power requirements. Choose this model over higher resolution alternatives if 8-bit accuracy suffices for the application's noise floor. Consider the automatic power-down feature for battery-operated designs where average current consumption must be minimized at lower sampling rates. Verify that the source impedance of the analog input signal allows for the specified acquisition time.

Part Context

The AD7823 belongs to Analog Devices' family of low-power, high-speed ADCs designed for embedded systems. It serves as a cost-effective solution for applications needing moderate resolution and fast conversion times within a compact form factor. The microSOIC variant offers a smaller board area compared to standard SOIC or DIP packages while maintaining identical electrical performance specifications across the series.

Replacement Considerations

The AD7810 is documented as a drop-in upgrade providing 10-bit resolution within the same 8-lead package options.