MCP48CMD21-E/MF

Overview

The MCP48CMD21-E/MF is a single-channel, 12-bit buffered voltage output 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, with reduced specifications available between 1.8V and 2.7V. The device utilizes a four-wire SPI-compatible serial interface supporting write speeds up to 50 MHz and read speeds up to 25 MHz. Key electrical characteristics include a typical settling time of 4 µs, an Integral Nonlinearity (INL) specification of ±1 LSB, and a Differential Nonlinearity (DNL) of ±1 LSB. The MTP memory allows for 32 user-programmable locations per register, storing power-up output values and configuration data.

Feature Summary

• Integrates Multi-Time Programmable (MTP) nonvolatile memory capable of 32 write cycles for retaining DAC output values and configuration settings across power cycles.
• Provides flexible voltage reference options including the internal band gap, device VDD, or an external VREF pin with selectable gain modes.
• Features a high-speed four-wire SPI serial interface compatible with standard '00' and '11' modes for efficient digital control.

Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration requiring persistent configuration storage
• Low-power portable instrumentation
• 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 that any assumed functional differences based on suffix variations are supported by explicit datasheet statements rather than general family knowledge.

Selection Notes

Select this component when a single-channel DAC requires nonvolatile memory retention without external EEPROMs. Confirm that the required resolution matches the 12-bit specification and that the operating voltage aligns with the 2.7V to 5.5V range for full performance specifications.

Part Context

This part belongs to the MCP48CXDX1/2 family of 8, 10, and 12-bit DACs. The 'CMD' designation indicates the inclusion of MTP nonvolatile memory, distinguishing it from volatile RAM variants. The 'E' suffix denotes the extended industrial temperature range, while '/MF' specifies the DFN-10 package.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing designs by cross-referencing pinouts and electrical specifications with alternative single-channel 12-bit SPI DACs if necessary.

FAQ

How many times can the MTP memory be programmed?

The MTP memory can be written up to 32 times per specific register location. After 32 cycles, subsequent writes are inhibited, and the value from the 32nd write is retained.

What is the maximum SPI clock speed for write operations?

The device supports a write speed of up to 50 MHz via its four-wire SPI-compatible serial interface.

Can the internal band gap voltage be used as the reference?

Yes, the device offers multiple reference source options, including the internal band gap voltage (typically 1.214V), the device VDD, or an external VREF pin.