ADI 5962R8512702VXA(AD574ATD/QMLR)

The AD574A is one of the longest-serving 12-bit ADCs in military electronics — an architecture whose combination of on-chip reference, clock, and complete bus interface has made it a default choice in defense signal chain design for decades. The ADI 5962R8512702VXA takes that foundation and adds the qualification tier that space and nuclear-hardened programs require: QMLR QPL radiation hardness assured, processed per MIL-PRF-38535, under SMD 5962-85127. For programs where the procurement specification calls out QMLR or the “R” SMD prefix explicitly, no commercial screening or standard 883B part satisfies the requirement — the 5962R8512702VXA is the only compliant acquisition path.

5962R8512702VXA Architecture: Why the AD574A Endures in Military Designs

The AD574A’s longevity in military programs is not nostalgia — it reflects the practical advantages of a Bipolar/I²L architecture that delivers guaranteed performance without external calibration. Laser-trimming of thin-film resistors at the wafer stage achieves T-grade ±1 LSB linearity and eliminates the offset, gain, and linearity errors that uncalibrated successive-approximation designs accumulate over temperature. The buried Zener reference — the same technology used in Analog Devices’ dedicated precision reference products — provides the long-term stability and low noise that directly determine the ADC’s accuracy at the system level. With the reference output available on a pin for external use, the AD574A’s on-chip reference can serve as the precision voltage source for other components in the signal chain, including the DAC output stages used in closed-loop military systems.

5962R8512702VXA vs SMD 5962-85127 Family: Qualification Tier Selection

The SMD 5962-85127 family spans multiple qualification levels for the AD574ATD. Selecting the correct tier requires matching the program’s procurement requirements:

For programs without radiation hardness requirements, the standard 5962-8512702XA provides the same T-grade AD574ATD electrical performance under MIL-STD-883B at lower procurement cost. For space, high-altitude, or nuclear-hardened applications where total ionizing dose and SEE tolerance must be documented, the 5962R8512702VXA is the only compliant option.

Sourcing the ADI 5962R8512702VXA

QMLR QPL components represent the highest qualification tier in military electronics procurement — production volumes are small, lead times can be significant, and supply chain verification is critical. We maintain verified 5962R8512702VXA inventory with full lot traceability, MIL-PRF-38535 certificate of conformance, radiation hardness test data, and anti-counterfeit inspection on every order. Contact us today to confirm availability and request a quote — our team responds within 24 hours.

• QMLR QPL “R” prefix is a hard requirement for space and radiation-hardened procurement — no 883B substitute is compliant
• T-grade guarantees ±1 LSB linearity and no missing codes across the full military temperature range
• On-chip buried Zener reference available for external use — reduces component count in signal chain designs
• 35 µs conversion time supports multi-channel scanning architectures with appropriate multiplexing
• Pin-selectable 8-bit or 16-bit bus interface accommodates both legacy and current military processor architectures
• Full QMLR lot traceability, radiation hardness test data, and certificate of conformance on every order
• Export-compliant shipping for space and defense program procurement

Frequently Asked Questions (FAQ)

What Is the ADI 5962R8512702VXA and What Is Its Commercial Equivalent?

The 5962R8512702VXA is the QMLR QPL procurement designation for Analog Devices’ AD574ATD, processed per MIL-PRF-38535 with radiation hardness assurance. It is a complete 12-bit SAR ADC with on-chip buried Zener reference, clock, and 3-state output buffers, with T-grade ±1 LSB linearity guaranteed over the military temperature range, in a 28-lead ceramic DIP package.

What Does the “R” Prefix in 5962R Mean?

The “R” prefix on an SMD part number indicates QMLR (Qualified Manufacturers List — Radiation Hardened) qualification under MIL-PRF-38535. This is the highest qualification tier for military microcircuits, requiring radiation hardness assurance (RHA) testing and QPL listing in addition to the standard Class B electrical and environmental screening. Programs with radiation hardness requirements in their procurement specification must use “R” prefix parts.

How Does the 5962R8512702VXA Compare to the Standard 5962-8512702XA?

The electrical specifications — T-grade linearity, conversion time, input ranges, and interface — are identical between the two. The difference is qualification level: the 5962R carries QMLR QPL radiation hardness documentation that the standard 5962 designation does not provide. For programs without RHA requirements, the standard 5962-8512702XA delivers the same AD574ATD performance at lower procurement cost and with potentially shorter lead times.

Does the AD574A Require External Calibration?

No. Active laser-trimming of thin-film resistors at the wafer stage minimizes offset, linearity, and scaling errors before the device is packaged. The T-grade 5962R8512702VXA meets its ±1 LSB linearity specification straight from qualified stock without user trimming. Optional offset and full-scale trim pins are provided for applications that require adjustment beyond the as-delivered accuracy, but they are not required for the device to meet its rated specifications.

How Do I Request a Quote for the ADI 5962R8512702VXA?

Submit an inquiry through our website contact form or email our sales team directly. We will respond within 24 hours with pricing, availability, lead time, and available lot qualification documentation — and can discuss long-term supply agreements for space and defense production programs.