AD7884AQ

Overview

The AD7884AQ is a 16-bit monolithic analog-to-digital converter featuring an internal sample-and-hold and a conversion time of 5.3 µs, achieving a maximum throughput rate of 166 kSPS via a two-pass flash architecture. It operates from ±5 V supplies with a 3 V reference input. The device supports ±5 V and ±3 V analog input ranges and provides a 16-bit parallel data output in twos complement code. It is housed in a 40-lead CERDIP package and functions within a temperature range of –40 °C to +85 °C.

Feature Summary

• Monolithic construction utilizing a two-pass flash architecture for high-speed sampling
• Internal oscillator controls conversion timing without external clock requirements
• Integrated sample-and-hold amplifier enables continuous acquisition during conversion phases
• Factory-trimmed on-chip gain setting resistors ensure precise tracking of the reference voltage

Applications

• Automatic Test Equipment
• Medical Instrumentation
• Industrial Control Systems
• Data Acquisition Systems
• Robotics

Procurement Notes

Verify that the component matches the specific ordering suffix AQ, which denotes the industrial temperature range and the 40-lead CERDIP package configuration. Confirm that the datasheet revision aligns with the required specifications for integral nonlinearity and dynamic performance metrics before integration into the design.

Selection Notes

Select this model when a 16-bit resolution with a 166 kSPS throughput rate is required in a parallel interface environment. Ensure the system design accommodates dual ±5 V power supplies and a 3 V reference source. Consider the physical dimensions of the 40-lead CERDIP package for PCB layout constraints compared to smaller surface-mount alternatives.

Part Context

This component belongs to the LC2MOS family of high-speed sampling ADCs manufactured by Analog Devices Inc. It shares architectural similarities with the AD7885 but differs in its parallel data output structure. The AD7884 series is designed for applications requiring fast conversion times and high accuracy in industrial environments.

Replacement Considerations

The AD7884BP serves as a direct replacement offering improved linearity specifications while maintaining the same package and electrical characteristics. Other variants such as the AD7884AP provide standard linearity options within the same form factor.