AD7824TQ

Overview

The AD7824TQ is an 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features four multiplexed analog input channels and utilizes a half-flash conversion technique to achieve a fast conversion rate of 2.5 µs per channel. The device incorporates a built-in track-and-hold function capable of handling full-scale signals up to 10 kHz with a slew rate of 157 mV/µs. It operates from a single 5 V supply, supporting an analog input range of 0 V to 5 V when used with an external 5 V reference. The component is housed in a 24-pin DIP package.

Feature Summary

• Four multiplexed analog input channels
• Built-in track-and-hold function for 10 kHz signal handling
• Fast conversion rate of 2.5 µs per channel using half-flash technique
• Single 5 V supply operation with low power consumption of 50 mW

Applications

• Multichannel data acquisition systems
• Industrial process control applications
• Portable instrumentation requiring low power

Procurement Notes

Verify the specific suffix 'TQ' against official Analog Devices documentation to confirm package type and temperature range specifications. Ensure compatibility with existing PCB footprints for the 24-pin DIP configuration. Check current availability status as legacy components may have limited stock or obsolescence notices.

Selection Notes

Select this component for applications requiring moderate resolution (8-bit) and high-speed sampling across multiple channels. It is suitable where a single 5 V supply is available and external reference voltage integration is feasible. Consider the 2.5 µs conversion time and 10 kHz bandwidth limits relative to system requirements.

Part Context

The AD7824 belongs to the AD7824/AD7828 family of LC2MOS high-speed ADCs. The AD7824 variant specifically provides four channels, whereas the AD7828 offers eight. Both share similar architectural features including the half-flash conversion method and track-and-hold capabilities, differing primarily in channel count and pin configuration.

Replacement Considerations

Direct replacements within the same family include the AD7828 for increased channel count. Other compatible parts listed in public records include AD7824BQ and AD7824CQ, which share identical functional descriptions but may differ in speed grades or package options.