MCP48FEB18-E/MQ

Digital To Analog Converters Overview

The MCP48FEB18-E/MQ is an octal-channel, 10-bit Digital-to-Analog Converter (DAC) from the MCP48FXBX4/8 family. It features buffered voltage outputs with rail-to-rail capability and a typical settling time of 7.8 µs. The device operates on a single supply ranging from 2.7V to 5.5V, or 1.8V to 2.7V with reduced specifications. It includes nonvolatile EEPROM memory for auto-recall of DAC codes and configuration bits. The unit utilizes a 3-wire SPI interface supporting up to 20 MHz writes and offers multiple reference source options including VDD, external VREF, and an internal band gap.

Digital To Analog Converters Feature Summary

• Octal output channel configuration with 10-bit resolution providing 1024 steps per channel
• Nonvolatile EEPROM memory enabling auto-recall of saved DAC register settings and device configuration upon power-up
• WiperLock™ functionality utilizing high-voltage commands to prevent inadvertent changes to stored output values
• Flexible voltage reference selection allowing operation with device VDD, external VREF pin, or internal band gap source

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'E/MQ' corresponds to the 20-lead VQFN package type as indicated in the datasheet table. Confirm that the 'B' designation in the base part number aligns with the nonvolatile EEPROM memory requirement rather than volatile RAM. Ensure the operating temperature range matches the extended -40°C to +125°C specification required for the application environment.

Digital To Analog Converters Selection Notes

Select this component when eight independent analog outputs are required within a compact footprint. The 10-bit resolution provides a balance between cost and precision for general-purpose applications. Consider the EEPROM feature if system state retention after power loss is critical. Verify that the SPI interface timing requirements are compatible with the host microcontroller's maximum clock speeds.

Digital To Analog Converters Part Context

This device belongs to the MCP48FXBX4/8 family of buffered voltage output DACs. The family differentiates models by channel count (quad vs. octal), resolution (8, 10, or 12-bit), and memory type (RAM vs. EEPROM). The MCP48FEB18 specifically denotes the octal, 10-bit, EEPROM variant. Other members include the MCP48FVB18 for volatile memory applications or MCP48FEB28 for higher 12-bit resolution needs.

Digital To Analog Converters Replacement Considerations

MCP48FVB18: Identical electrical performance but uses volatile RAM instead of nonvolatile EEPROM, losing auto-recall capabilities.

Digital To Analog Converters FAQ

What is the function of the LAT pins on the MCP48FEB18?

The LAT pins are used to latch data into the DAC registers without affecting the current output voltages. This allows for updating multiple channels simultaneously or preparing new values while maintaining stable outputs.

How does WiperLock™ technology protect the device?

WiperLock™ prevents inadvertent changes to the output value by requiring a specific high-voltage signal on the HVC pin combined with dedicated SPI commands to unlock or modify the stored memory values.

Can the MCP48FEB18 operate with an external voltage reference?

Yes, the device supports an external voltage reference via the VREF pin. Users can select between buffered or unbuffered modes depending on the gain setting and reference source configuration.