MCP48CMB14-20E/ST

Digital To Analog Converters Overview

The MCP48CMB14-20E/ST is a quad-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring Multi-Time Programmable (MTP) nonvolatile memory and an SPI serial interface. It operates within a supply voltage range of 2.7V to 5.5V for full specifications, or 1.8V to 2.5V with reduced analog performance. The device provides four independent outputs with 1 LSB INL specification, selectable reference sources including VDD, external VREF, or internal band gap, and programmable gain options of 1x or 2x. It supports write speeds up to 50 MHz and read speeds up to 25 MHz.

Digital To Analog Converters Feature Summary

• Integrates MTP nonvolatile memory allowing user programming up to 32 times per register location for power-up values and configuration.
• Offers flexible DAC voltage reference selection from device VDD, external VREF pin, or internal band gap source.
• Supports dual gain configurations of unity (1x) or double (2x) when utilizing external reference inputs.
• Includes power-down modes that disconnect the output buffer or select specific pull-down resistor values.

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the component designation against official Microchip datasheets to confirm the specific package type and temperature rating. Ensure the ordering suffix matches the required physical dimensions and environmental operating range. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select this model for applications requiring quad-channel buffered voltage outputs with persistent configuration storage via MTP technology. Consider the 10-bit resolution and SPI interface speed requirements relative to system timing constraints. Evaluate the need for external versus internal reference voltages based on desired accuracy and available board space constraints.

Digital To Analog Converters Part Context

This component belongs to the MCP48CXBX4/8 family of digital-to-analog converters manufactured by Microchip Technology. The family encompasses various channel counts and resolutions, differentiated by volatile RAM or nonvolatile MTP memory options. This specific variant utilizes the TSSOP-20 package format suitable for surface-mount assembly.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include other MCP48CMBxx variants with different resolutions or channel counts. Verify compatibility regarding pinout assignments, memory architecture, and electrical specifications before implementing any cross-model replacements in existing designs.

Digital To Analog Converters FAQ

How many times can the MTP memory be programmed?

The MTP memory can be written by the user up to 32 times for each specific register location. After 32 cycles, subsequent writes are inhibited.

What are the supported SPI interface modes?

The device supports SPI modes '00' and '11', allowing for flexible clock polarity and phase configurations depending on the master controller.

Can the gain be set to 2x when using VDD as the reference?

No, the 2x gain option is only available when not using the internal VDD as the voltage source; it requires an external VREF input.