AD5663BRMZ

Overview

The AD5663BRMZ 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. The device guarantees monotonicity by design with a maximum relative accuracy of ±12 LSBs for the B grade. 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 supporting clock rates up to 50 MHz, compatible with SPI, QSPI, Microwire, and DSP standards. Key features include hardware LDAC and CLR functions, per-channel power-down, and an internal power-on reset circuit.

Feature Summary

• Dual 16-bit resolution with ±12 LSBs maximum relative accuracy
• Rail-to-rail output capability with 2.7 V to 5.5 V single supply operation
• Low power consumption: 1.25 mW typical at 5 V; 480 nA in power-down
• High-speed 3-wire serial interface with up to 50 MHz clock rate
• Guaranteed monotonic by design with hardware LDAC and CLR functions

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 specific grade (B Grade) and package type (10-lead MSOP) against project requirements. Confirm that an external reference voltage is available, as the AD5663BRMZ does not include an internal reference. Ensure the system logic levels are compatible with the specified VINL and VINH thresholds for reliable serial communication.

Selection Notes

Select this component when dual-channel precision is required in a compact surface-mount package. The B grade offers ±12 LSBs accuracy suitable for general instrumentation. Consider the AD5663BRMZ-1 variant if a midscale power-up state is preferred over the standard zero-scale reset. Verify capacitive load stability requirements, as the device supports up to 10 nF with a 2 kΩ load.

Part Context

The AD5663BRMZ belongs to Analog Devices' nanoDAC family, designed for low-power applications. It shares architectural similarities with the AD5623R and AD5643R but provides higher 16-bit resolution. The BRMZ suffix indicates the B grade performance level and the 10-lead MSOP packaging option, distinguishing it from LFCSP_WD variants or other accuracy grades within the same series.

Replacement Considerations

Direct functional replacements within the same package and pinout include the AD5663ARMZ (A grade, ±8 LSBs accuracy). For single-channel applications, the AD5662 series may be considered, though pinouts differ. Cross-family substitutes like the AD5693 offer I2C interfaces but require schematic adjustments.