AD660BR

Overview

The AD660BR is a monolithic 16-bit digital-to-analog converter (DAC) from the DACPORT series, manufactured by Analog Devices Inc. It integrates an on-chip buried Zener voltage reference, double-buffered latches, and an output amplifier on a single BiMOS II die. The device supports serial or byte input interfaces and features a fast 40 ns write pulse with an asynchronous clear function to 0 V. Key electrical specifications include ±1 LSB integral linearity, 15-bit monotonicity over temperature, low glitch energy of 15 nV-s, and total harmonic distortion plus noise (THD+N) of 0.009%. It operates with unipolar or bipolar outputs and includes a serial output pin for daisy-chaining capabilities.

Feature Summary

• Complete 16-bit DAC function with on-chip output amplifier and buried Zener voltage reference
• Microprocessor-compatible serial or byte input interface with double-buffered latches
• High precision: ±1 LSB integral linearity and 15-bit monotonic operation over temperature
• Low glitch energy (15 nV-s) and low THD+N (0.009%) for high-fidelity signal generation

Applications

• Precision data acquisition systems requiring high-resolution analog output
• Industrial process control instrumentation
• Medical equipment requiring accurate analog signal generation
• Test and measurement instruments needing low-distortion voltage sources

Procurement Notes

Verify component status as the AD660BR may be discontinued or subject to limited availability. Confirm package type (24-SOIC) and revision level against current datasheets. Check for lead time constraints if sourcing through distributors. Ensure compatibility with existing system power supplies and logic levels before procurement.

Selection Notes

Select the AD660BR when 16-bit resolution and high linearity are required in a serial/byte interface format. Consider the integrated reference and amplifier for simplified design compared to discrete solutions. Evaluate power supply requirements (±13.5V to 16.5V analog, 5V digital) and operating temperature range (-40°C to 85°C). Compare glitch performance and settling time against alternative DACs if dynamic response is critical.

Part Context

The AD660BR belongs to the DACPORT family, which combines high-precision bipolar linear circuitry with CMOS logic on a BiMOS II process. This integration allows for compact, low-power designs without sacrificing accuracy. The BR suffix typically denotes a specific package variant (24-SOIC) and temperature range within the broader AD660 product line.

Replacement Considerations

Direct replacements should maintain 16-bit resolution, serial/byte interface, and similar pinout. Verify if newer revisions or RoHS-compliant versions (e.g., AD660BRZ) are available. Cross-reference with other DACPORT models like AD669 for functional similarities, but confirm interface and performance differences.