MCP48CMB04T-20E/ST

Overview

The MCP48CMB04T-20E/ST is a quad-channel, 8-bit Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory. It operates on a single supply voltage ranging from 2.7V to 5.5V and utilizes a 4-wire SPI serial interface with write speeds up to 50 MHz. The device provides buffered voltage outputs with selectable gain of 1x or 2x. Key electrical specifications include an Integral Nonlinearity (INL) of ±1 LSB, a typical settling time of 4 µs, and a maximum power-down current of 2.4 µA. The unit is housed in a 20-lead TSSOP package.

Feature Summary

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

Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration circuits requiring persistent configuration data
• Low-power portable instrumentation devices

Procurement Notes

Verify the ordering suffix 'T-20E/ST' corresponds to the tape-and-reel packaging format rather than tube packaging. Confirm the temperature grade 'E' matches the required extended operating range of -40°C to +125°C. Ensure the component version aligns with the latest datasheet revision DS20006556B to guarantee accurate electrical parameter compliance.

Selection Notes

Select this model when quad-channel resolution is required alongside nonvolatile storage capabilities. The 8-bit resolution suits applications where high precision is not critical but cost efficiency is prioritized. Verify that the system can provide the necessary high-voltage level on the HVC pin if MTP programming is utilized during operation.

Part Context

This component belongs to the MCP48CXBX4/8 family of digital-to-analog converters manufactured by Microchip Technology. The family encompasses variants with volatile RAM or nonvolatile MTP memory, offering resolutions from 8-bit to 12-bit. The 'CMB' designation specifically identifies the 8-bit resolution variant equipped with nonvolatile memory storage.

Replacement Considerations

Direct substitutes within the same family include MCP48CMB04-E/ML (QFN package) or MCP48CVB04T-20E/ST (volatile memory). Cross-family replacements require verification of channel count, resolution, and interface compatibility.