AD5663ARMZ

Overview

The AD5663ARMZ is a dual, 16-bit buffered voltage-output digital-to-analog converter (DAC) from the nanoDAC family. It operates on a single 2.7 V to 5.5 V supply and features rail-to-rail output swing with a maximum settling time of 7 μs. The device guarantees monotonicity by design and achieves a relative accuracy of ±12 LSBs maximum. Power consumption is typically 1.25 mW at 5 V, dropping to 480 nA in power-down mode. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, supporting clock rates up to 50 MHz.

Feature Summary

• Dual 16-bit resolution with ±12 LSBs maximum relative accuracy
• Rail-to-rail output capability with 7 μs maximum settling time
• Low power operation: 1.25 mW at 5 V; 480 nA in power-down mode
• Guaranteed monotonic by design with external reference input

Applications

• Process control systems
• Data acquisition systems
• Portable battery-powered instruments
• Digital gain and offset adjustment circuits
• Programmable voltage and current sources

Procurement Notes

Verify the package type matches the specific application requirements, as the AD5663 series is available in both 10-lead MSOP and LFCSP_WD packages. Confirm that the system design accommodates an external reference voltage, as this specific part variant does not include an internal reference source. Ensure the serial interface timing aligns with the host processor's capabilities for reliable data transfer.

Selection Notes

Select the AD5663ARMZ when dual-channel precision is required without the complexity of internal references. This component is suitable for designs needing rail-to-rail output swings and low power consumption. Compare against the AD5663BRMZ if an internal reference or different initial power-up state is necessary. Verify that the 2.7 V to 5.5 V supply range meets the system's voltage constraints.

Part Context

The AD5663ARMZ belongs to the nanoDAC family, which includes pin-compatible variants with different resolutions such as the 12-bit AD5623R and 14-bit AD5643R. These devices share similar architectural features but differ in accuracy and power specifications. The ARMZ suffix indicates the MSOP package option, distinguishing it from the LFCSP_WD package options available within the same product line.

Replacement Considerations

Direct replacements within the same family include the AD5663BCPZ for LFCSP packaging. For applications requiring an internal reference, consider the AD5663BRMZ-3. Single-channel alternatives like the AD5662 may be used if only one DAC channel is needed.