MCP48CMB28T-E/ML

Overview

The MCP48CMB28T-E/ML is an octal-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory. It operates within a supply voltage range of 2.7V to 5.5V and supports SPI serial interfaces with write speeds up to 50 MHz and read speeds up to 25 MHz. The device integrates an internal band gap reference (1.214V typical), selectable external or VDD references, and offers gain options of 1x or 2x. Key electrical specifications include ±1 LSb Integral Nonlinearity (INL), a settling time of 4 µs, and power-down modes for low-power applications. It is housed in a 20-lead 4 mm x 4 mm QFN package.

Feature Summary

• Integrates MTP nonvolatile memory allowing user programming up to 32 times for persistent configuration storage.
• Provides eight independent buffered voltage outputs with high precision specified by ±1 LSb INL.
• Supports flexible reference selection including internal band gap, device VDD, or external VREF with configurable gain.
• Features a high-speed SPI interface compatible with standard modes and includes power-on/brown-out reset protection.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the 'E' suffix corresponds to the extended temperature range (-40°C to +125°C). Ensure compatibility with the required SPI mode ('00' or '11') during procurement planning. Cross-reference the manufacturer part number against official datasheets to confirm current production status and availability.

Selection Notes

Select this component for designs requiring multiple analog outputs with nonvolatile retention capabilities. The 12-bit resolution suits applications demanding high accuracy, while the octal configuration reduces board space compared to single-channel alternatives. Consider the MTP write limit of 32 cycles when designing update routines. Verify that the system voltage aligns with the 2.7V to 5.5V operating range for full specification compliance.

Part Context

This device belongs to the MCP48CXBX4/8 family of digital-to-analog converters from Microchip Technology. The family encompasses quad and octal variants with resolutions ranging from 8-bit to 12-bit. The 'CMB' designation specifically identifies the octal channel version equipped with nonvolatile MTP memory, distinguishing it from volatile RAM-based counterparts like the CVB series.

Replacement Considerations

Direct replacements within the same family include other MCP48CMB28 variants with different packaging options, such as the TSSOP package. For quad-channel requirements, the MCP48CMB24 series serves as a functional alternative with fewer outputs. Volatile memory versions like the MCP48CVB28 offer similar performance without nonvolatile storage.