AD7824KRZ-REEL

Overview

The AD7824KRZ-REEL is an Analog Devices high-speed, multichannel analog-to-digital converter featuring four multiplexed analog inputs and 8-bit resolution. Utilizing a half-flash conversion technique, it achieves a fast conversion rate of 2.5 µs per channel with a built-in track-and-hold function capable of handling 10 kHz signals. The device operates from a single 5 V supply, consuming typically 50 mW of power. It interfaces via standard parallel logic using Chip Select and Read signals without requiring an external clock. The KRZ suffix indicates surface-mount packaging in the SOIC-24 format, suitable for commercial temperature ranges.

Feature Summary

• Employs a half-flash architecture combining two 4-bit flash ADCs to achieve 8-bit accuracy without external clocking requirements.
• Integrates a built-in track-and-hold circuit that supports signal bandwidths up to 10 kHz on all channels.
• Features a simple microprocessor interface utilizing standard Chip Select and Read control signals for data acquisition.

Applications

• Data acquisition systems requiring multi-channel signal digitization
• Industrial process control monitoring
• Speech analysis and real-time filtering applications

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and temperature range. Ensure the source document explicitly links the REEL suffix to tape-and-reel packaging for this specific part number. Confirm RoHS compliance status through official datasheets or component markings before integration into production designs.

Selection Notes

Select this component when a cost-effective, space-saving solution for four-channel sampling is required. The half-flash architecture eliminates the need for external clock generation circuits. Verify that the 100 kHz per-channel sampling rate meets system Nyquist requirements for the target input frequencies.

Part Context

This component belongs to the AD7824/AD7828 family of high-speed ADCs. The AD7824 variant specifically provides four analog input channels, whereas the AD7828 offers eight. Both share identical conversion architectures and timing characteristics, differing primarily in channel count and pin configurations.

Replacement Considerations

Direct replacements within the same series include the AD7824KN for DIP packaging or the AD7824LN for tighter error specifications. Cross-series alternatives like the AD7829 offer higher speeds but require different interface considerations.