AD569JN

Overview

The AD569JN is a monolithic 16-bit digital-to-analog converter manufactured in Analog Devices’ BiMOS II process. It features a voltage-segmented architecture ensuring guaranteed 16-bit monotonicity over temperature and time. The device includes double-buffered input latches, selector switches, and on-chip high-speed buffer amplifiers. Typical integral nonlinearity is ±0.01%, with differential nonlinearity at ±0.0004%. Output settling time is 3 μs to within ±0.001% for a full-scale step. The J grade operates from 0°C to +70°C in a 28-pin plastic DIP package.

Feature Summary

• Guaranteed 16-bit monotonicity via voltage-segmented architecture
• Monolithic BiMOS II construction with low drift and low noise
• Double-buffered input latches support 8- and 16-bit bus compatibility
• On-chip buffer amplifiers drive capacitive loads up to 1000 pF

Applications

• Robotics
• Closed-loop positioning systems
• High-resolution analog-to-digital converters
• Microprocessor-based process control

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. The 'JN' suffix denotes the commercial grade (0°C to +70°C) in a 28-pin plastic DIP. Ensure that any substitute components maintain equivalent linearity and monotonicity specifications for critical applications.

Selection Notes

Select the AD569JN when 16-bit resolution and strict monotonicity are required in commercial temperature environments. The device supports both unipolar and bipolar reference inputs, allowing flexible output ranges. Consider the AD569KN or BD variants if tighter integral nonlinearity specifications (±0.024%) or extended industrial temperature ranges are necessary for the application.

Part Context

The AD569 series comprises several grades differentiated by temperature range and precision. The JN variant represents the standard commercial option. Other versions include the KN and BD for improved linearity, and the SD for extended military-grade temperature performance. All variants share the same core BiMOS II architecture and pinout.

Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. When replacing this component, ensure the alternative DAC offers comparable 16-bit monotonicity, similar settling times, and compatible logic voltage levels (TTL/LSTTL/5V CMOS). Verify that the replacement package matches the 28-pin DIP footprint.

FAQ

How does the AD569 ensure 16-bit monotonicity?

Monotonicity is insured by the voltage-segmented architecture, which uses buffer amplifiers that leap-frog up the first resistor string to preserve accuracy at segment boundaries.

What is the typical output settling time for the AD569JN?

The on-chip buffer amplifiers provide a voltage output settling time of 3 μs to within ±0.001% for a full-scale step under no-load conditions.

Can the AD569 operate with an AC reference signal?

Yes, the AD569 can operate with an AC reference in multiplying applications, where the output voltage is proportional to the product of the digital input word and the reference voltage.