AD7824KNZ

Overview

The AD7824KNZ is an 8-bit, 4-channel analog-to-digital converter utilizing a half-flash architecture. It operates on a single 5 V supply with a typical power dissipation of 50 mW and features a built-in track-and-hold function capable of handling 10 kHz signals. The device provides a fast conversion rate of 2.5 µs per channel and interfaces via parallel data outputs controlled by Chip Select and Read signals. It is housed in a 24-lead skinny DIP package and supports an analog input range of 0 V to 5 V using an external reference.

Feature Summary

• Half-flash conversion technique eliminates the need for an external clock signal
• Built-in track-and-hold function handles high slew rate signals without external components
• Simple microprocessor interface compatible with standard memory control signals
• Tight error specifications minimize the requirement for user calibration

Applications

• Multichannel data acquisition systems requiring cost-effective space-saving solutions
• Speech analysis applications utilizing real-time filtering techniques
• Fast infinite sample-and-hold circuits for multi-channel signal processing

Procurement Notes

Verify component authenticity through official Analog Devices channels or authorized distributors. Confirm the specific ordering suffix matches the required temperature grade and package variant. Review the latest datasheet revision for any updates to electrical characteristics or pin configurations before finalizing procurement orders.

Selection Notes

Select this component for applications requiring multiplexed inputs with high-speed conversion capabilities. Ensure the system design accommodates the specified 5 V single supply voltage and external reference requirements. Verify that the microprocessor interface timing aligns with Mode 0 or Mode 1 operational constraints defined in the technical documentation.

Part Context

This part belongs to the AD7824/AD7828 family of LC2MOS high-speed ADCs. The AD7824 specifically offers four multiplexed analog inputs, whereas the AD7828 variant provides eight channels. Both share identical core conversion architectures and interface protocols, differing primarily in channel count and physical package pinout configurations.

Replacement Considerations

Direct functional substitutes within the same family include the AD7828 for expanded channel counts. Alternative packages such as SOIC or SSOP variants are available under different ordering suffixes like AD7824KR or AD7824BQ for different temperature ranges.