AD7824KR-REEL

Overview

The AD7824KR-REEL is a high-speed, multichannel analog-to-digital converter manufactured by Analog Devices Inc. It features four multiplexed analog input channels and provides an 8-bit resolution. The device utilizes a half-flash conversion technique to achieve a fast conversion rate of 2.5 microseconds per channel, supporting a sampling frequency of 100 kHz per channel. It operates from a single 5 V supply with a typical power dissipation of 50 mW. The component includes a built-in track-and-hold function capable of handling signals up to 10 kHz. It employs a parallel digital interface controlled by Chip Select (CS) and Read (RD) signals, eliminating the need for an external clock. The total unadjusted error is specified at ±1 LSB, and it functions within a commercial temperature range of 0 °C to 70 °C.

Feature Summary

• Integrates a four-channel analog multiplexer with a built-in track-and-hold circuit for efficient signal acquisition.
• Employs a half-flash architecture combining two 4-bit flash ADCs to deliver rapid 8-bit conversion results without external clocking.
• Features a simple microprocessor-compatible parallel interface using standard control signals for data access.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Ensure compatibility with system voltage levels and interface requirements before integration. Confirm availability status as distribution may vary.

Selection Notes

Select this component for applications requiring moderate speed and multiple analog inputs. Consider the AD7828 if eight channels are necessary. Evaluate the total unadjusted error specification against application accuracy needs. Verify that the parallel interface aligns with the target microprocessor architecture.

Part Context

This part belongs to the AD7824/AD7828 family of high-speed, multichannel 8-bit ADCs. The AD7824 variant specifically offers four input channels, whereas the AD7828 provides eight. Both share the same core half-flash conversion technology and operational characteristics, differing primarily in channel count and pin configuration.

Replacement Considerations

The AD7824LN serves as a compatible alternative within the same series offering tighter error specifications. Other variants such as AD7824KN or AD7824BQ provide different temperature ranges or error tolerances while maintaining functional equivalence.