AD5683RARMZ

Overview

The AD5683RARMZ is a single-channel, 16-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It features an internal 2.5 V reference with a typical drift of 2 ppm/°C and operates on a single 2.7 V to 5.5 V supply. The device guarantees monotonicity by design and offers selectable output spans of 0 V to VREF or 0 V to 2 × VREF. Key performance metrics include ±2 LSB maximum INL at 16 bits, 5 µs settling time, and low power consumption of 1.2 mW at 3.3 V. It utilizes a versatile 3-wire SPI interface supporting clock rates up to 50 MHz.

Feature Summary

• 16-bit resolution with ±2 LSB maximum integral nonlinearity (INL).
• Integrated 2.5 V reference source with 2 ppm/°C typical temperature coefficient.
• Selectable output span: 0 V to VREF or 0 V to 2 × VREF.
• Low power consumption: 1.2 mW at 3.3 V; 2 µA max in power-down mode.

Applications

• Process controls
• Data acquisition systems
• Digital gain and offset adjustment
• Programmable voltage sources

Procurement Notes

Verify the specific grade (A or B) associated with the ordering suffix ARMZ against the manufacturer's current ordering guide, as INL specifications vary between grades. Confirm package availability and lead times through authorized distributors, as stock levels fluctuate. Ensure the selected variant includes the required logic supply options (VLOGIC) if independent digital supply operation is needed for the application.

Selection Notes

Select the AD5683RARMZ when high relative accuracy (±2 LSB INL) and low drift are required in a small footprint. Choose this part over the external reference version (AD5683) if board space savings from the integrated 2.5 V reference are prioritized. Verify that the 10-lead MSOP package meets thermal requirements, as it has a higher junction-to-ambient thermal resistance compared to the LFCSP option.

Part Context

The AD5683RARMZ belongs to the nanoDAC+ series, which also includes 14-bit (AD5682R) and 12-bit (AD5681R) variants. These devices share similar pinouts and functionality but differ in resolution and precision. The 'R' suffix indicates the inclusion of an internal reference, while 'ARMZ' denotes the 10-lead MSOP package with RoHS compliance. This family provides a scalable solution for applications requiring varying levels of DAC precision.

Replacement Considerations

Direct replacements within the same family include AD5683RACPZ (LFCSP package) or AD5683RBRMZ (MSOP package). For lower resolution needs, AD5682R or AD5681R variants may be suitable if pin-compatible. External reference versions like AD5683 require additional components but offer flexibility in reference selection.