MCP48CMB22-E/UN

Overview

The MCP48CMB22-E/UN is a dual-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) memory and an SPI serial interface. It operates on a single supply voltage ranging from 2.7V to 5.5V, with reduced specifications available between 1.8V and 2.7V. The device provides four voltage reference options: device VDD, external VREF pin, or internal bandgap (1.214V typical). Key electrical parameters include a settling time of 16 µs, 1 LSb Integral Nonlinearity (INL), and gain error of ±1% FSR. It supports write speeds up to 50 MHz and read speeds up to 25 MHz. The unit is housed in a 10-lead MSOP package and functions within an extended temperature range of -40°C to +125°C.

Feature Summary

• Integrated MTP memory allows user programming for power-up output values and device configuration, supporting up to 32 write cycles per location.
• Dual-channel architecture enables independent control of two 12-bit DAC outputs with selectable unity or 2x gain settings.
• Flexible reference selection includes device VDD, external VREF pin, or internal bandgap voltage sources.
• High-speed SPI interface supports '00' and '11' modes with write speeds up to 50 MHz.

Applications

• Set point or offset trimming
• Sensor calibration
• Low-power portable instrumentation
• PC peripherals
• Data acquisition systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature grade. Ensure that any required high-voltage programming levels are supported by the host system if MTP functionality is utilized. Confirm compatibility with the intended SPI clock speeds and voltage levels before finalizing procurement.

Selection Notes

Select this component when nonvolatile storage for DAC settings is required without EEPROM endurance limitations. Consider the 16 µs settling time and 1 LSb INL specification for precision applications. Verify that the 10-lead MSOP package fits the board layout constraints and that the operating voltage range aligns with the system power supply.

Part Context

This part belongs to the MCP48CXBXX family of digital-to-analog converters. It shares architectural similarities with volatile memory variants like the MCP48CVB22 but distinguishes itself through integrated MTP memory. The family offers various resolutions and channel counts, providing flexibility for different application requirements while maintaining consistent SPI interface protocols.

Replacement Considerations

Direct replacements within the same family include other MCP48CMBxx variants with different resolutions or channel counts. For volatile memory applications, the MCP48CVB22 series may be considered if nonvolatile storage is not required. Always verify pinout compatibility and electrical specifications before substitution.