AD7823YRMZ-REEL7

Overview

The AD7823YRMZ-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 typical conversion time of 4 µs with a maximum throughput rate of 200 kSPS. The device incorporates inherent track-and-hold functionality and utilizes a pseudo-differential input architecture. It communicates via a high-speed serial interface compatible with standard microcontrollers. Power consumption is optimized through an automatic power-down mode, achieving as low as 570 µW at 10 kSPS. The component is specified for operation across a temperature range of –40°C to +125°C.

Feature Summary

• Inherent track-and-hold functionality eliminates the need for external sampling circuits.
• Automatic power-down mode significantly reduces average power consumption at lower throughput rates.
• Microcontroller-compatible serial interface requires no external logic for connection.
• Pseudo-differential input scheme allows for system offset removal.

Applications

• Battery-powered test equipment requiring 8-bit accuracy
• Hand-held portable applications necessitating low power analog-to-digital conversion
• Battery-powered communications systems

Procurement Notes

Verify the specific ordering suffix REEL7 confirms tape-and-reel packaging when sourcing components. Confirm that the Y version meets the required linearity specifications of ±1 LSB total unadjusted error. Ensure the microSOIC package footprint aligns with the target PCB design constraints before finalizing procurement orders.

Selection Notes

Select this component for designs prioritizing minimal board space due to its compact 8-lead microSOIC package. Consider the automatic power-down feature if the application involves intermittent sampling to extend battery life. Verify that the source impedance of the driving circuit remains low enough to satisfy the 100 ns acquisition time requirement for accurate signal capture.

Part Context

The AD7823 series represents a family of low-power, high-speed ADCs designed for space-constrained environments. The Y variant specifically denotes a linearity error of ±1 LSB. This model serves as a direct upgrade path from lower-resolution converters while offering significant power savings compared to continuous-conversion architectures in portable electronic devices.

Replacement Considerations

The AD7810 is documented as a drop-in upgrade providing 10-bit resolution within the same package. Verify pin compatibility and software adjustments when substituting models within the AD7823 family or transitioning to higher resolution variants.