MCP48CMB14T-20E/ST

Overview

The MCP48CMB14T-20E/ST is a quad-channel, 10-bit Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features Multi-Time Programmable (MTP) nonvolatile memory and operates within a supply voltage range of 2.7V to 5.5V. The device utilizes an SPI serial interface with write speeds up to 50 MHz and read speeds up to 25 MHz. It provides buffered voltage outputs with selectable gain options of 1x or 2x. The component is housed in a 20-lead TSSOP package and supports an extended operating temperature range from -40°C to +125°C.

Feature Summary

• Integrates MTP nonvolatile memory for retaining DAC output values, configuration registers, and general-purpose data across power cycles.
• Offers flexible reference voltage sources including VDD, external VREF pin, and an internal band gap voltage.
• Supports configurable power-down modes that disconnect the output buffer or select specific pull-down resistor values.

Applications

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

Procurement Notes

Verify the ordering suffix 'T' corresponds to the reel packaging format required for your assembly line. Confirm the 'E' designation aligns with the specified industrial temperature range and RoHS compliance standards. Ensure the 'ST' suffix matches the TSSOP package dimensions on your schematic footprint. Cross-reference the full part number against the manufacturer's current datasheet revision to confirm active status and any potential design changes.

Selection Notes

Select this model when persistent storage of DAC settings without battery backup is required. The 10-bit resolution offers a balance between precision and speed for applications not requiring 12-bit accuracy. Verify that the system logic levels are compatible with the SPI interface requirements. Consider the quad-channel architecture if multiple independent analog outputs are needed within a single package footprint.

Part Context

This component belongs to the MCP48CXBX4/8 family of digital-to-analog converters. The 'M' in the part number indicates the inclusion of Multi-Time Programmable memory, distinguishing it from volatile RAM variants like the MCP48CVB series. The '14' suffix specifies the 10-bit resolution and quad-channel configuration. This family shares common electrical characteristics and pinouts across different resolutions and channel counts.

Replacement Considerations

The MCP48CMB14-E/ML is a parameter-equivalent alternative available in a QFN package. For octal configurations, the MCP48CMB18 is a related variant with eight channels. Direct replacements must maintain the 10-bit resolution, SPI interface, and MTP memory functionality to ensure circuit compatibility.