MCP48CMB04-E/ML

Overview

The MCP48CMB04-E/ML is a quad-channel, 8-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory. It operates on a supply voltage ranging from 2.7V to 5.5V and utilizes an SPI serial interface with write speeds up to 50 MHz. The device provides four independent analog outputs with selectable reference sources including VDD, external VREF, or an internal band gap. It supports gain settings of 1x or 2x and includes power-down modes for low-power applications.

Feature Summary

• Integrates MTP nonvolatile memory allowing user-programmable storage of DAC values and configuration registers.
• Offers flexible voltage reference options utilizing the device supply, an external pin, or an internal band gap source.
• Supports dual gain configurations of unity or two times for expanded dynamic range control.
• Includes programmable power-down modes that disconnect the output buffer or engage pull-down resistors.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure the design accommodates the high-voltage programming requirements for the MTP memory if persistent data storage is utilized. Confirm compatibility with the host system's SPI clock speeds and voltage levels prior to finalizing procurement.

Selection Notes

Select this component when a quad-channel DAC with persistent configuration storage is required. The 8-bit resolution suits applications where moderate precision is acceptable. Consider the available reference voltage options and the need for gain adjustment when evaluating suitability for the target signal range. Verify that the QFN-20 package fits the available PCB footprint.

Part Context

This part belongs to the MCP48CXBX4 family of quad-channel DACs. Variants within this family differ by resolution (8-bit, 10-bit, 12-bit) and memory type (volatile RAM vs. nonvolatile MTP). The 'B' designation specifically indicates the inclusion of MTP memory, distinguishing it from volatile counterparts.

Replacement Considerations

Direct substitutes include other members of the MCP48CXBX4 family such as the MCP48CMB14-E/ML for 10-bit resolution or MCP48CMB24-E/ML for 12-bit resolution. Volatile versions like the MCP48CVB04-E/ML are pin-compatible but lack nonvolatile storage capabilities.

FAQ

How many times can the MTP memory be programmed?

The MTP memory can be written up to 32 times per location. After 32 writes, subsequent commands are ignored to preserve the stored data.

What voltage is required on the HVC pin for MTP programming?

A high-voltage level, typically 7.5V, must be applied to the LAT/HVC pin to successfully program the nonvolatile memory locations.

Can the device operate at 1.8V?

Yes, the device supports operation down to 1.8V, though analog specifications may be reduced compared to the full 2.7V to 5.5V operating range.