MCP48CMB22-E/MF

Overview

The MCP48CMB22-E/MF 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 1 LSb Integral Nonlinearity (INL) and supports DAC voltage reference sources including the device VDD, external VREF pin, or an internal bandgap of 1.214V typical. Output gain options include unity (1x) and 2x when not using the internal VDD as the voltage source. The component includes Power-on/Brown-out Reset protection and configurable power-down modes that disconnect the output buffer or select pull-down resistors.

Feature Summary

• Dual-channel architecture with 12-bit resolution and buffered voltage outputs
• Nonvolatile MTP memory allowing up to 32 user-programmable write cycles per location
• Flexible reference selection among device VDD, external VREF, or internal bandgap
• SPI interface supporting high-speed write operations up to 50 MHz

Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration for precision measurement instruments
• Low-power portable instrumentation requiring nonvolatile settings
• PC peripherals and data acquisition systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure the design accommodates the required high-voltage level on the LAT/HVC pin for MTP programming. Confirm that the system power supply remains within the specified operating range to maintain full electrical specifications.

Selection Notes

Select this component when dual-channel 12-bit conversion with nonvolatile storage is required. The MTP feature allows for field programmability without external EEPROMs. Consider the 16 µs settling time and 1 LSb INL specification for applications demanding high accuracy. Verify that the host controller supports the required SPI modes and can provide the necessary voltage levels for the LAT/HVC pin during memory writes.

Part Context

This device belongs to the MCP48CXBXX family, which encompasses single and dual-channel DACs with resolutions of 8-bit, 10-bit, and 12-bit. The 'M' in the part number indicates the MSOP-10 package variant. The 'B' designation distinguishes it as having nonvolatile MTP memory, whereas 'V' variants use volatile RAM. This family shares common electrical characteristics and interface protocols across different channel counts and resolutions.

Replacement Considerations

Direct substitutes within the same family include MCP48CMB22T-E/UN (tape and reel packaging) or MCP48CMB22-E/ML (QFN-16 package). For volatile memory requirements, the MCP48CVB22 series serves as a functional alternative. Cross-family replacements require verification of pin compatibility and electrical parameter alignment.