AD669BRZ

Overview

The AD669BRZ is a monolithic 16-bit digital-to-analog converter manufactured by Analog Devices Inc. using BiMOS II technology, which integrates low-power CMOS logic with high-precision bipolar linear circuits on a single chip. It features current switches, decoding logic, output amplifiers, an embedded Zener reference, and dual-buffered latches. The device accepts parallel 16-bit data inputs and supports unipolar or bipolar output configurations. Key electrical parameters include a sampling rate of 167 ksps, a settling time of 6 µs, and a signal-to-noise ratio (SNR) of 83 dB. It operates within a temperature range of -40°C to +85°C and is housed in a 28-pin SOIC package.

Feature Summary

• Dual-buffered latch structure eliminates data offset errors and enables synchronized updates in multi-DAC systems
• High-stability embedded Zener reference with typical output noise voltage of 120nV/√Hz
• Low total harmonic distortion plus noise (THD+N) of 0.009% and linearity error of ±2 LSB
• Monolithic construction using BiMOS II process for combined CMOS logic and bipolar circuitry

Applications

• Multi-channel DAC systems requiring synchronized data updates
• Precision instrumentation requiring 15-bit monotonicity over temperature
• Applications demanding low power consumption with integrated reference and amplifier

Procurement Notes

Verify the specific suffix 'BRZ' against the manufacturer's official datasheet to confirm package type (SOIC-28), temperature grade (-40°C to +85°C), and RoHS compliance status. Ensure that the ordering information matches the exact pinout and electrical specifications required for the design, as suffix variations may indicate different packaging or environmental ratings without altering the core function.

Selection Notes

Select the AD669BRZ when a 16-bit resolution with parallel interface is required alongside an integrated reference and output amplifier. Consider the 167 ksps update rate and 6 µs settling time for system timing constraints. Verify that the ±13.5V to ±16.5V supply requirements align with the available power rails, and ensure the 28-pin SOIC footprint fits the PCB layout constraints.

Part Context

The AD669BRZ belongs to the AD669 family of 16-bit DACs from Analog Devices. This series utilizes BiMOS II technology to provide high accuracy and low power consumption. The BRZ suffix typically denotes a lead-free, RoHS-compliant version in a specific plastic package, distinguishing it from older ceramic or non-RoHS variants within the same functional family.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. Consult Analog Devices documentation for direct replacements or cross-references within the DAC portfolio.