AD7822BRZ-REEL

Overview

The AD7822BRZ-REEL is an 8-bit, single-channel analog-to-digital converter (ADC) from Analog Devices. It features a maximum throughput of 2 MSPS and a conversion time of 420 ns using a half-flash architecture. The device operates on a single supply voltage ranging from 3 V ± 10% to 5 V ± 10%. It includes an internal 2.5 V reference with ±2% tolerance and an on-chip track-and-hold amplifier. The input span is 2.5 V at 5 V operation or 2 V at 3 V operation, adjustable via the VMID pin. DC accuracy specifications include an integral nonlinearity (INL) and differential nonlinearity (DNL) of ±0.75 LSB max, and a gain error of ±2 LSB max.

Feature Summary

• High-speed 8-bit half-flash ADC architecture with 420 ns conversion time
• Integrated track-and-hold amplifier supporting full-scale inputs up to 10 MHz
• On-chip 2.5 V reference with automatic power-down capability
• Flexible parallel interface compatible with microprocessors and DSPs

Applications

• Data acquisition systems
• DSP front ends
• Disk drives
• Mobile communication systems
• Subsampling applications

Procurement Notes

Verify the specific package type and temperature grade when ordering. The suffix 'BRZ' indicates a lead-free RoHS-compliant plastic SOIC package in the industrial temperature range. Confirm that the reel quantity matches system requirements. Ensure the source documentation explicitly lists this part number to avoid confusion with other channel variants like the AD7825 or AD7829.

Selection Notes

Select the AD7822BRZ-REEL for single-channel applications requiring high speed and low power. Compare against the AD7825 (4 channels) and AD7829 (8 channels) if multiple inputs are needed. Verify that the 8-bit resolution meets system accuracy needs, as higher precision requires different architectures. Check supply voltage compatibility, as input spans differ between 3 V and 5 V operation.

Part Context

This component belongs to the AD7822/AD7825/AD7829 family of sampling ADCs. While sharing core specifications like speed and resolution, the AD7822 is distinguished by its single-ended analog input configuration. It shares the same package options and interface logic with the multi-channel variants, allowing for design flexibility within the same product line.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.