AD660ANZ

Overview

The AD660ANZ is a complete 16-bit monolithic digital-to-analog converter (DAC) from Analog Devices, housed in a 24-pin plastic DIP package. It integrates an internal Zener voltage reference, dual-buffered latch, and output amplifier on a single BiMOS II chip. The device supports serial or parallel data input via SPI/Microwire interfaces. Key electrical specifications include ±13.5V to ±16.5V analog supply voltages and a 5V digital supply. It features R-2R architecture with typical integral nonlinearity (INL) and differential nonlinearity (DNL) errors of ±1 LSB. The output amplifier settles to within 1/2 LSB of full-scale steps in approximately 10 µs.

Feature Summary

• Integrated 10.000 V Zener reference with ±0.1% accuracy and ±15 ppm/°C drift
• Dual-buffered latch structure eliminates data skew and enables simultaneous multi-DAC updates
• Programmable unipolar (0V to 10V) or bipolar (-10V to +10V) output ranges without external components
• Flexible serial interface supporting MSB/LSB first modes and daisy-chaining capabilities

Applications

• High-resolution industrial process control systems
• Precision test and measurement instrumentation
• Multi-channel data acquisition systems requiring synchronized updates
• Medical ultrasound equipment signal generation

Procurement Notes

Verify the specific suffix 'ANZ' confirms RoHS compliance and lead-free termination status as per manufacturer documentation. Confirm the 24-PDIP package dimensions match the target PCB footprint. Check for any recent Product Change Notifications (PCNs) regarding manufacturing site transfers or material changes that may affect long-term availability or qualification requirements.

Selection Notes

Select the AD660ANZ when a single-chip solution with integrated reference and buffer is required for 16-bit precision applications. Ensure the system operates within the specified -40°C to +85°C temperature range. Verify that the SPI/Microwire interface timing meets the controller's clock speed requirements. Consider the 13µs (or 8µs depending on specific grade/testing conditions) settling time against the system update rate needs.

Part Context

The AD660 belongs to the DACPORT family of high-performance data converters. The 'A' indicates the commercial/industrial temperature grade (-40°C to +85°C), while 'N' denotes the plastic DIP package. The 'Z' suffix signifies RoHS compliance. Other variants include the ADM660 series which are distinct power management devices, and the AD6600 series which are ADCs, not to be confused with this DAC.

Replacement Considerations

Direct pin-compatible replacements should be verified against the latest Analog Devices cross-reference guide. Note that the ADM660ARZ is a different component (charge pump regulator) and is not a functional substitute for the AD660ANZ DAC.