AD974ANZ

Overview

The AD974ANZ is a 16-bit, 200 kSPS Data Acquisition System (DAS) manufactured by Analog Devices Inc. It integrates four single-ended analog input channels with a 4-to-1 multiplexer and a successive approximation ADC. The device operates on a single +5 V supply, consuming a maximum power dissipation of 120 mW. Key specifications include an integral nonlinearity (INL) of ±2 LSB and an external or internal 2.5 V reference option. It features an on-chip clock generator and a serial interface for data output, housed in a 28-pin DIP package suitable for through-hole mounting.

Feature Summary

• Four-channel 16-bit resolution with 200 kSPS throughput
• Single +5 V supply operation with low power consumption (120 mW max)
• Integrated 2.5 V reference and on-chip clock generator
• Serial digital interface compatible with standard microprocessors

Applications

• Industrial process control systems
• Data acquisition modules
• Battery-powered instrumentation
• Remote telemetry units

Part Context

The AD974 belongs to the AD974 family of data acquisition systems from Analog Devices. This series provides multi-channel conversion capabilities in a compact form factor, designed to simplify system design by integrating multiplexing, sampling, and conversion functions into a single monolithic IC. The 'A' suffix typically denotes an extended temperature range compared to commercial variants.

Replacement Considerations

Direct pin-compatible replacements within the same family include the AD974B and AD974C, which may offer improved accuracy or speed specifications. Cross-family alternatives should be evaluated based on channel count, resolution, and interface compatibility requirements.