AD7824KRZ

Overview

The AD7824KRZ is an 8-bit, 4-channel analog-to-digital converter (ADC) from Analog Devices. It utilizes a half-flash conversion technique to achieve a fast conversion rate of 2.5 µs per channel, supporting a sampling frequency of 100 kHz. The device features a built-in track-and-hold function capable of handling signals up to 10 kHz with a slew rate of 157 mV/µs. Operating on a single 5 V supply, it consumes 50 mW typical power. The total unadjusted error is ±1 LSB for the K version. It interfaces via parallel data outputs and standard microprocessor control signals.

Feature Summary

• Half-flash architecture eliminates the need for external clock generation
• Integrated track-and-hold circuitry supports high-speed signal digitization
• Direct parallel interface compatible with standard microprocessor memory cycles

Applications

• Multichannel data acquisition systems requiring cost-effective space saving
• Microprocessor-based instrumentation with simple read-only memory interfacing
• Speech analysis and real-time filtering applications

Procurement Notes

Verify the specific ordering suffix KRZ against the manufacturer's current production status. Confirm that the K temperature grade meets the operational requirements of 0°C to 70°C. Ensure the R-24 package option matches the PCB footprint design constraints before finalizing procurement orders.

Selection Notes

Select the AD7824KRZ when four multiplexed channels are required rather than eight. Choose this model over the AD7828 if system board space is limited. Verify that the ±1 LSB total unadjusted error specification satisfies the application accuracy needs compared to the higher precision C or U versions.

Part Context

This component belongs to the AD7824/AD7828 family of high-speed multichannel ADCs. It shares the same core LC2MOS fabrication process and functional block diagram as the 8-channel AD7828 variant. The primary distinction lies in the number of analog input channels available on the multiplexer.

Replacement Considerations

Publicly confirmed substitute part numbers are not documented in the provided datasheet.