MAX5351BCUA

Digital To Analog Converters Overview

The MAX5351BCUA is a low-power, 13-bit voltage-output digital-to-analog converter (DAC) with a precision output amplifier in an 8-pin µMAX package. It operates from a single +3.3V supply and draws 240µA typical supply current. The device features a double-buffered input register and DAC register, accepting 16-bit serial words via SPI/QSPI or Microwire interfaces. Key electrical parameters include a 16µs settling time to ±1/2LSB, ±2LSB maximum integral nonlinearity (INL), and ±1LSB maximum differential nonlinearity (DNL). The reference input range extends from 0V to VDD - 1.4V.

Digital To Analog Converters Feature Summary

• Integrates a 13-bit inverted R-2R ladder DAC with a buffered precision output amplifier.
• Features a software-programmable shutdown mode for significant power reduction.
• Includes Schmitt-trigger digital inputs compatible with direct optocoupler interfacing.
• Provides access to the output amplifier's inverting input for configurable gain settings.

Digital To Analog Converters Applications

• Industrial Process Controls
• Automatic Test Equipment
• Digital Offset and Gain Adjustment
• Motion Control Systems

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'BCUA' against the manufacturer's official ordering information to confirm the temperature range and linearity grade. Ensure that the component source provides valid traceability documentation. Confirm compatibility with the target system's 3.3V logic levels and serial interface timing requirements before finalizing procurement.

Digital To Analog Converters Selection Notes

Select this component when a 13-bit resolution is required within a compact 8-pin surface-mount footprint. The MAX5351 variant is specifically designed for single +3.3V operation, distinguishing it from the +5V MAX535. Consider the external reference requirement and the availability of the feedback pin for gain configuration during the design phase.

Digital To Analog Converters Part Context

This part belongs to the MAX535/MAX5351 family of low-power voltage-output DACs. The MAX5351 variant is electrically distinct from the MAX535 by its optimized operation at a single +3.3V supply voltage. Both share identical architectural features, including the 13-bit resolution and serial interface compatibility.

Digital To Analog Converters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Digital To Analog Converters FAQ

How does the double-buffered input structure function?

The device utilizes a 16-bit shift register feeding into an input register and a DAC register. This allows data to be loaded into the input register without immediately changing the analog output, enabling synchronized updates of multiple DACs or independent register management.

What is the purpose of the FB pin?

The FB pin provides access to the inverting input of the internal output amplifier. This allows users to configure external feedback networks to set specific voltage gains or implement signal conditioning circuits such as current sources.

How is the device placed into shutdown mode?

Shutdown mode is activated by writing the control code '111' followed by any 13 data bits via the serial interface. In this state, the supply current drops significantly, and the output amplifier enters a high-impedance state while retaining the last written data.