AD7824KR

Overview

The AD7824KR is an LC2MOS high-speed, multichannel, 8-bit analog-to-digital converter featuring four multiplexed analog inputs. It utilizes a half-flash conversion technique to achieve a fast conversion rate of 2.5 µs per channel with a built-in track-and-hold function capable of digitizing full-scale signals up to 10 kHz. The device operates from a single 5 V supply and requires an external reference voltage. It offers a total unadjusted error of ±1 LSB and dissipates 50 mW typ. The component is housed in a 24-lead SOIC package (R-24) and supports commercial operating temperatures ranging from 0 °C to +70 °C.

Feature Summary

• Half-flash conversion architecture provides rapid data acquisition without requiring an external clock signal for the ADC core.
• Integrated track-and-hold circuitry enables direct handling of high slew rate signals on all channels.
• Microprocessor interface compatibility allows simple connection using standard Chip Select and Read signals.
• Tight error specifications eliminate the need for user calibration or trimming.

Applications

• Multichannel data acquisition systems
• Industrial process control monitoring
• Speech analysis applications

Procurement Notes

Verify the specific ordering suffix KR against the manufacturer's current documentation to confirm the package type and temperature range. Ensure that the external reference voltage requirements are met by the system design. Confirm that the microprocessor interface timing aligns with the specified Mode 0 or Mode 1 operation parameters.

Selection Notes

Select this component when a cost-effective, space-saving solution for multichannel ADC systems is required. The AD7824KR is suitable for applications needing fast conversion rates and tight channel-to-channel matching. Consider the single 5 V supply requirement and the need for an external reference voltage during system planning.

Part Context

The AD7824KR belongs to the AD7824/AD7828 family of high-speed, multichannel, 8-bit ADCs manufactured by Analog Devices. This series is fabricated in an advanced LC2MOS process, offering low power dissipation and high speed. The AD7824 variant specifically provides four analog input channels, distinguishing it from the eight-channel AD7828 model within the same product line.

Replacement Considerations

The AD7824KN is a parameter-equivalent alternative within the same package option but may differ in error specifications or availability. Verify pinout compatibility and electrical characteristics before substitution.