AD5663BRMZ-1

Overview

The AD5663BRMZ-1 is a dual-channel, 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 with typical power consumption of 0.6 mW at 3 V and 1.25 mW at 5 V. The device features rail-to-rail output swing, guaranteed monotonicity by design, and a relative accuracy of ±12 LSBs maximum. It utilizes a versatile 3-wire serial interface compatible with SPI, QSPI, Microwire, and DSP standards, supporting clock rates up to 50 MHz. A key characteristic of the BRMZ-1 suffix is its power-on reset behavior, which ensures outputs initialize to midscale upon power-up.

Feature Summary

• Dual 16-bit resolution with ±12 LSBs maximum relative accuracy
• Power-on reset to midscale for the BRMZ-1 variant
• Rail-to-rail output amplifiers with 2 nF capacitive load stability
• Per-channel power-down mode reducing current to 480 nA at 5 V

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm functional differences. Suffixes such as 'BRMZ-1' indicate specific power-on reset behaviors or packaging variations that may not apply to other variants in the AD5663 family. Ensure compatibility with system requirements regarding initial output states before procurement.

Selection Notes

Select this component when a dual-channel DAC with high resolution and low power consumption is required. The BRMZ-1 variant is specifically suitable for applications where initializing outputs to midscale during power-up is necessary for safety or operational continuity. Verify that the external reference voltage range meets the 0.75 VDD minimum requirement for proper operation.

Part Context

The AD5663BRMZ-1 belongs to the AD5663 family of nanoDACs, which includes variants with internal references (AD5623R/AD5643R/AD5663R) and different power-on reset configurations. The standard AD5663 powers up to zero scale, whereas the BRMZ-1 variant is engineered to power up to midscale. This family shares the same core architecture, serial interface, and pinout, differing primarily in internal reference presence and initialization states.

Replacement Considerations

Direct replacements within the same package and functionality include the AD5663BRMZ (zero-scale power-up) or AD5663BRMZ-REEL7 (tape and reel packaging). For single-channel applications, the AD5662 series may be considered. Cross-model substitution requires verification of the power-on reset state to ensure it matches the system's startup requirements.