AD669BR

Overview

The AD669BR is a monolithic 16-bit DACPORT manufactured by Analog Devices Inc. using BiMOS II process technology, integrating current switches, decoding logic, an output amplifier, and a buried Zener reference on a single chip. It features double-buffered latches for simultaneous multi-DAC updates and supports unipolar (0 V to +10 V) or bipolar (–10 V to +10 V) pin-programmable outputs. The device guarantees 15-bit monotonicity over temperature with ±2 LSB integral nonlinearity error. Key electrical parameters include a typical settling time of 8 μs for a full-scale step, 0.009% THD+N, and 83 dB SNR. It operates within a –40°C to +85°C temperature range in a 28-pin SOIC package.

Feature Summary

• Monolithic 16-bit resolution with ±2 LSB INL/DNL and 15-bit guaranteed monotonicity over temperature.
• On-chip laser-trimmed 10.00 V buried Zener reference with low drift (15 ppm/°C typical).
• Double-buffered latch architecture eliminates data skew and enables synchronized updates in multi-channel systems.
• Pin-programmable output ranges: 0 V to +10 V (unipolar) or –10 V to +10 V (bipolar) without external components.

Applications

• High-precision signal generation requiring low distortion and high linearity.
• Multi-channel data acquisition systems requiring simultaneous DAC updates.
• Industrial control systems operating in extended temperature environments.
• Programmable voltage and current sources with calibrated offset and gain.

Procurement Notes

Verify the specific grade suffix (BR) corresponds to the required linearity and temperature specifications. Confirm that the 28-pin SOIC package matches the target PCB footprint. Ensure supply voltages align with the specified VCC (+13.5 V to +16.5 V) and VEE (–13.5 V to –16.5 V) requirements for optimal performance.

Selection Notes

Select the AD669BR when 16-bit precision and 15-bit monotonicity are critical. Choose this model over AN/AR variants if tighter linearity tolerances (±2 LSB vs ±4 LSB) are required. Consider the SQ version for military-grade wide temperature operation (–55°C to +125°C) if environmental conditions exceed the industrial range.

Part Context

The AD669 series represents Analog Devices' DACPORT family, combining digital logic and analog circuitry on a single BiMOS II die. The BR variant specifically denotes the commercial grade with improved linearity specifications compared to the A-grade parts, packaged in a standard 28-pin Small Outline Integrated Circuit (SOIC) format suitable for surface-mount assembly.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. For equivalent functionality, verify compatibility with other 16-bit parallel input DACs from Analog Devices, ensuring pinout and voltage requirements match.