MCP48FEB02T-E/UN

Digital To Analog Converters Overview

The MCP48FEB02T-E/UN is a dual-channel, 8-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring nonvolatile EEPROM memory and an SPI serial interface. It operates within a supply voltage range of 1.8V to 5.5V, with full specifications guaranteed from 2.7V to 5.5V. The device provides rail-to-rail outputs with a typical settling time of 7.8 µs. Reference options include the VDD pin, an external VREF pin, or an internal 1.22V band gap. Gain settings are selectable at unity (1x) or 2x. Power consumption is low, drawing approximately 380 µA in normal operation and 650 nA in power-down mode. It is housed in a 10-lead MSOP package and supports extended temperature ranges from -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Integrated nonvolatile EEPROM memory for automatic recall of DAC register settings, device configuration, and power-on reset states upon startup.
• Flexible reference voltage selection allowing the use of the device supply voltage, an external reference input, or an internal band gap source.
• Configurable power-down modes that disconnect the output buffer or select specific pull-down resistor values to minimize current consumption.
• SPI-compatible serial interface supporting write speeds up to 20 MHz and read speeds up to 10 MHz with Schmitt trigger inputs.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration and signal conditioning
• Low-power portable instrumentation
• Data acquisition systems requiring nonvolatile output retention

Digital To Analog Converters Procurement Notes

Verify the ordering suffix 'T' indicates tape-and-reel packaging when sourcing this component. Confirm the '-E' designation corresponds to the extended industrial temperature range of -40°C to +125°C. Ensure the specific revision matches the required datasheet version for accurate timing parameters. Cross-reference the manufacturer part number directly to avoid confusion with similar volatile-only variants in the family.

Digital To Analog Converters Selection Notes

Select this model when dual-channel conversion with persistent data storage is required. The 8-bit resolution suits applications where high precision is not critical but cost and power efficiency are priorities. Consider the 1.8V minimum operating voltage for battery-powered designs. Verify that the SPI clock speed requirements align with the 20 MHz write limit. Evaluate the internal band gap stability if an external reference cannot be used.

Digital To Analog Converters Part Context

This component belongs to the MCP48FEBXX family of nonvolatile DACs from Microchip Technology. It shares architectural similarities with volatile counterparts like the MCP47FVB series but adds EEPROM for state retention. The dual-channel variant complements single-channel models by providing two independent outputs in a compact MSOP package, suitable for space-constrained PCB layouts.

Digital To Analog Converters Replacement Considerations

The MCP48FEB02T-E/MF serves as a tube-packaged alternative to the reel-based T suffix. For single-channel requirements, the MCP48FEB01T-E/UN offers identical electrical characteristics with one fewer output channel. Users should verify pin compatibility and software command set alignment when substituting these parts.

Digital To Analog Converters FAQ

How does the device handle output voltage during a power cycle?

The integrated EEPROM allows for the auto-recall of saved DAC register settings and device configuration bits. This ensures the output returns to a predefined state immediately after power-on or brown-out reset events without requiring external initialization.

What are the available gain configurations for the output buffer?

The output buffer gain can be configured for either unity (1x) or 2x amplification. When using the external VREF pin with 2x gain, the VREF voltage must be limited to a maximum of VDD/2 to prevent saturation.

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

Yes, the device includes an internal band gap reference with a typical voltage of 1.22V. If selected, the output buffer automatically applies a 2x gain factor unless overridden by specific configuration bits.