AD574ATD

The AD574ATD from Analog Devices is a complete 12-bit successive-approximation analog-to-digital converter (ADC) engineered for military, aerospace, and other high-reliability applications where consistent performance under extreme conditions is critical. This monolithic IC integrates a precision voltage reference, clock, and comparator, eliminating the need for external components and simplifying system design. The converter accepts multiple analog input ranges including 0–10 V, 0–20 V, ±5 V, and ±10 V, and delivers a parallel digital output compatible with 8- or 16-bit microprocessor buses. With a typical conversion time of 25 µs, the AD574ATD guarantees no missing codes over its full -55°C to +125°C military temperature range. It is packaged in a hermetically sealed 28-pin ceramic dual-in-line (CDIP) package and is processed to MIL-STD-883 requirements, ensuring long-term reliability in high-vibration and thermally stressful environments.

Typical deployment of the AD574ATD encompasses flight control computers, missile guidance systems, radar signal processing, and satellite telemetry, as well as rugged industrial data acquisition and process control platforms that must sustain operation in extreme conditions. Given the mature nature of the AD574A family, procurement specialists should carefully manage obsolescence risks and source only from authorized channels that provide full traceability and lot documentation. The ceramic DIP construction and military-grade testing make this device suitable for applications where component failure is not an option, and it remains a standard choice for sustaining legacy military systems while maintaining compliance with stringent reliability requirements.