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AD974BN

AD974BN Description

The AD974BN from Analog Devices Inc. is a high-performance 16-bit Data Acquisition System (DAS) designed for precision analog-to-digital conversion in demanding applications. Housed in a 28-pin DIP package, this obsolete but robust IC integrates a 4-channel multiplexer, 16-bit successive approximation register (SAR) ADC, and a serial interface for streamlined data transfer. Operating on a 4.75V to 5.25V dual supply (analog and digital), it delivers a 200k samples per second (SPS) sampling rate, making it suitable for high-speed, high-resolution signal acquisition. Its through-hole mounting ensures reliability in industrial environments, while its EAR99 ECCN classification indicates broad export flexibility.

AD974BN Features

• 16-bit resolution for ultra-precise data conversion.
• 4-channel multiplexer enabling multi-sensor or signal input flexibility.
• 200kSPS sampling rate for high-speed data capture.
• Serial data interface (simplifies PCB layout and reduces noise).
• Dual analog/digital supply voltage (4.75V–5.25V) for versatile system integration.
• Through-hole package (28-DIP) for rugged industrial applications.
• Moisture Sensitivity Level (MSL) 1 (unlimited shelf life).
• Low-power design ideal for embedded systems.

Advantages over competitors: The AD974BN combines high resolution (16-bit) with a 200kSPS throughput, a rare balance in its class, while its integrated multiplexer reduces external component count. Its serial interface minimizes board space versus parallel alternatives.

AD974BN Applications

• Industrial automation: High-speed monitoring of sensors (e.g., pressure, temperature).
• Medical instrumentation: Precision data acquisition in imaging or diagnostic equipment.
• Test and measurement systems: Multi-channel signal analysis with low noise.
• Defense/aerospace: Reliable performance in harsh environments (DIP packaging).
• Audio processing: High-resolution analog signal digitization.

Conclusion of AD974BN

The AD974BN is a legacy but capable 16-bit DAS IC, offering high accuracy, speed, and channel flexibility for specialized applications. While obsolete, its 200kSPS rate, 4-channel input, and rugged through-hole design make it a preferred choice for retrofits or systems requiring proven reliability. Engineers in industrial, medical, or aerospace fields may still leverage its performance where newer alternatives are impractical.