AD7581AQ

ADCs/DACs - Special Purpose Overview

The AD7581AQ is an 8-bit, 8-channel Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc. It utilizes a Successive Approximation Register (SAR) architecture and features an on-chip multiplexer for single-ended inputs. The device operates with a +5V supply and includes a built-in sample-and-hold circuit. Key electrical parameters include a maximum sampling rate of 1.5 kS/s, a power dissipation of 8 mW, and a linear error of 0.731%. It is housed in a 28-pin DIP package and supports parallel data interfaces.

ADCs/DACs - Special Purpose Feature Summary

• 8-Bit Resolution with 8 Single-Ended Input Channels
• Successive Approximation (SAR) Architecture with On-Chip Sample-and-Hold
• CMOS Technology for Low Power Consumption (8 mW typical)
• Parallel Interface Compatible with Microprocessors

ADCs/DACs - Special Purpose Applications

• Data Acquisition Systems
• Industrial Process Control
• Battery-Powered Instrumentation

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix 'AQ' against the official Analog Devices datasheet to confirm military-grade temperature range and qualification status. Check current availability as older CMOS ADCs may have limited stock or obsolescence notices. Ensure the required voltage references and clock signals are compatible with the device's specifications before procurement.

ADCs/DACs - Special Purpose Selection Notes

Select the AD7581AQ when an 8-bit resolution and multi-channel input capability are required for low-speed applications. Compare the 1.5 kS/s sampling rate against system requirements. Consider the PDIP-28 package if through-hole mounting is necessary. Verify that the external reference voltage requirements align with the design constraints.

ADCs/DACs - Special Purpose Part Context

The AD7581 series belongs to Analog Devices' family of CMOS microprocessor-compatible ADCs. The AD7581JN and AD7581KNZ are commercial variants within this lineage. The AD7581AQ represents the qualified version of this component, sharing the same core SAR architecture and pinout but adhering to stricter manufacturing standards for reliability.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the AD7581 family include the AD7581JN and AD7581KNZ, subject to temperature range verification. Other 8-bit, 8-channel SAR ADCs from different manufacturers may require interface and timing adjustments.