MCP4921-E/MCVAO

Digital To Analog Converters Overview

The MCP4921-E/MCVAO is a single-channel, 12-bit Digital-to-Analog Converter (DAC) utilizing a resistor-string architecture. It operates on a single supply voltage ranging from 2.7V to 5.5V and features an SPI-compatible serial interface supporting clock frequencies up to 20 MHz. The device provides rail-to-rail analog output with selectable unity or 2x gain. Key electrical specifications include a typical settling time of 4.5 µs, a maximum Integral Non-Linearity (INL) error of ±12 LSB, and a typical Differential Non-Linearity (DNL) error of ±0.2 LSB. It functions within an extended temperature range of -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Resistor-string architecture providing low DNL error and fast settling times
• SPI interface with simultaneous latching capability via the LDAC pin
• Configurable output gain allowing selection between unity and 2x amplification
• Integrated Power-on Reset (POR) circuit ensuring reliable startup

Digital To Analog Converters Applications

• Set point or offset trimming in industrial systems
• Motor control feedback loop regulation
• Calibration of optical communication devices
• Digitally-controlled multiplier or divider circuits

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'E/MCVAO' against the manufacturer's official documentation to confirm package type and environmental compliance status. Ensure that the ordering information matches the required thermal pad connection for the DFN-8 package. Cross-reference the datasheet revision date to confirm current availability and any potential design changes.

Digital To Analog Converters Selection Notes

Select this component when a single-channel, high-resolution digital-to-analog conversion is required with SPI connectivity. Consider the 12-bit resolution and low DNL characteristics for precision applications. Evaluate the external reference input requirement versus internal reference alternatives if available in other series members. Confirm that the operating voltage range aligns with the system power supply constraints.

Digital To Analog Converters Part Context

This device belongs to the MCP49x1 family of single-channel DACs, which also includes 8-bit (MCP4901) and 10-bit (MCP4911) variants. These components share similar architectural features and pinouts but differ in resolution and accuracy specifications. The family is designed for general-purpose applications requiring calibrated signal generation or compensation.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include the MCP4901-E/MCVAO and MCP4911-E/MCVAO, which offer lower resolutions but maintain identical pinouts and interfaces. For dual-channel requirements, consider the MCP4922 series. Verify that any replacement maintains the required DFN-8 package and extended temperature rating.