AD669ARZ

Overview

The AD669ARZ is a monolithic 16-bit Digital-to-Analog Converter (DAC) from Analog Devices, manufactured using the BiMOS II process. It integrates current switches, decoding logic, an output amplifier, a buried Zener reference, and double-buffered latches on a single chip. The device accepts 16-bit parallel data inputs and provides voltage outputs with a settling time of 6 µs. It operates on analog supply voltages ranging from 13.5 V to 16.5 V and digital supplies from 4.5 V to 5.5 V. Key performance metrics include a signal-to-noise ratio of 83 dB, differential nonlinearity of ±2 LSB, and integral nonlinearity of ±2 LSB. The component is housed in a 28-lead SOIC package.

Feature Summary

• Complete 16-bit D/A function with on-chip output amplifier and high-stability buried Zener reference
• Double-buffered latches enable synchronized updates in multi-DAC systems and eliminate data offset errors
• Low glitch energy of 15 nV-s and total harmonic distortion plus noise (THD+N) of 0.009%
• 15-bit monotonicity over temperature range with microprocessor-compatible 16-bit parallel interface

Applications

• High-fidelity audio processing systems requiring low THD+N
• Precision instrumentation where 16-bit resolution and linearity are critical
• Multi-channel DAC arrays utilizing double-buffered latch synchronization
• Industrial control systems operating within -40°C to +85°C temperature ranges

Procurement Notes

Verify RoHS compliance status through official Analog Devices documentation prior to integration. Confirm that the SOIC-28 package dimensions match PCB footprint requirements. Ensure power supply rails strictly adhere to the specified 13.5–16.5 V analog and 4.5–5.5 V digital limits to prevent device damage. Check for MIL-STD-883 compliant versions if aerospace or military qualification is required.

Selection Notes

Select the AD669ARZ when a single-channel, 16-bit parallel input DAC is needed with integrated reference and amplifier capabilities. Consider the 6 µs settling time and 167 kS/s sampling rate for bandwidth constraints. Evaluate the ±2 LSB linearity specifications against system accuracy requirements. Compare power dissipation of 625 mW against thermal management capabilities in the target enclosure.

Part Context

The AD669 belongs to the DACPORT family, which combines DAC functionality with supporting circuitry on a single die. This series utilizes BiMOS II technology to merge low-power CMOS logic with high-precision bipolar linear circuits. The ARZ suffix indicates a lead-free, RoHS-compliant variant in a 28-lead SOIC package, suitable for surface-mount assembly.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs by comparing pinouts, electrical parameters, and package dimensions before considering alternative components.