AD669BN

Overview

The AD669BN is a monolithic 16-bit DACPORT manufactured using Analog Devices' BiMOS II process, integrating low-power CMOS logic with high-precision bipolar linear circuitry. It features an on-chip output amplifier and a buried Zener reference laser-trimmed to 10.000 V (±0.2% max error). The device accepts parallel 16-bit data via double-buffered latches, eliminating skew for simultaneous multi-DAC updates. Key electrical specifications include ±2 LSB integral nonlinearity, 15-bit monotonicity over temperature, and a gain drift of 15 ppm/°C. It operates from +13.5 V to +16.5 V (VCC) and -13.5 V to -16.5 V (VEE), with a typical settling time of 8 μs for a full-scale step.

Feature Summary

• Complete 16-bit D/A function with on-chip output amplifier and high-stability buried Zener reference.
• Double-buffered latch structure eliminates data skew errors and enables simultaneous updating in multi-DAC systems.
• Pin-programmable unipolar (0 V to +10 V) or bipolar (-10 V to +10 V) output ranges without external components.
• Low glitch impulse of 15 nV-s typical and total harmonic distortion plus noise (THD+N) of 0.009%.

Applications

• Signal generation applications requiring low THD+N and high SNR.
• Multi-DAC systems requiring synchronized updates via double-buffered latches.
• Microprocessor-compatible interfaces utilizing 16-bit parallel input.
• Precision instrumentation requiring 15-bit monotonicity over temperature.

Procurement Notes

Verify the specific grade suffix BN indicates the -40°C to +85°C industrial temperature range and Plastic DIP N-28 package. Confirm MIL-STD-883 compliance requirements if applicable, as standard versions differ from military-grade SQ/BQ variants. Check ESD sensitivity precautions during handling, as the device is classified as Class 2 per MIL-STD-883 Method 3015.2.

Selection Notes

Select the AD669BN when 16-bit resolution and 15-bit monotonicity are required with integrated buffering. Choose this model over serial alternatives like the AD660 if parallel microprocessor interface speed is prioritized. Ensure supply voltages match the specified VCC (+13.5 V to +16.5 V) and VEE (-13.5 V to -16.5 V) rails. Consider the AD688 external reference if gain drift performance below 15 ppm/°C is necessary.

Part Context

The AD669 series includes AN, AR, BN, BR, AQ, BQ, and SQ grades. The BN variant specifically denotes the Bipolar grade with ±2 LSB linearity error, operating from -40°C to +85°C, housed in a 28-pin Plastic DIP (N-28) package. Other grades offer different linearity tolerances (e.g., AN has ±4 LSB) or packages (e.g., AR is SOIC).

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material. Refer to the AD669/883B data sheet for military-compliant versions or consult Analog Devices for current cross-reference information.