MCP47FEB22A1T-E/ST

Digital To Analog Converters Overview

The MCP47FEB22A1T-E/ST is a dual-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) featuring nonvolatile EEPROM memory and an I²C serial interface. It operates within a supply voltage range of 1.8V to 5.5V, supporting full specifications from 2.7V to 5.5V and reduced specifications from 1.8V to 2.7V. The device provides rail-to-rail outputs with a typical settling time of 6 µs. Reference sources include the internal band gap (1.22V), VDD, or an external VREF pin. Output gain can be configured for unity (1x) or double (2x). Power consumption is low, drawing less than 380 µA in normal operation and approximately 650 nA in power-down mode.

Digital To Analog Converters Feature Summary

• Dual-channel architecture with integrated nonvolatile EEPROM for persistent DAC settings and configuration recall upon power-up.
• I²C-compatible serial interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes.
• Configurable voltage reference options including internal band gap, VDD, or external VREF pin with selectable buffer gain.

Digital To Analog Converters Applications

• Set point or offset trimming
• Sensor calibration
• Low-power portable instrumentation
• Data acquisition systems

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature grade. Ensure the I²C slave address configuration matches the system requirements, as the device supports user-programmable addresses. Confirm that the selected reference voltage source aligns with the required output gain settings for the intended application.

Digital To Analog Converters Selection Notes

Select this component when dual-channel precision is required alongside nonvolatile storage capabilities. The 12-bit resolution offers 4096 steps for fine control. Verify that the system operating voltage falls within the 1.8V to 5.5V range. Consider the power-down modes if energy efficiency is critical, noting the distinct current draw for different power-down configurations.

Digital To Analog Converters Part Context

This part belongs to the MCP47FEBXX family of single and dual-channel DACs. The '2' indicates dual channels, while '2' denotes 12-bit resolution. The 'A1' suffix typically specifies the factory default I²C slave address. These devices are designed for applications requiring precise analog output generation controlled via digital interfaces.

Digital To Analog Converters Replacement Considerations

Check for MCP47FEB22 variants with different addressing suffixes if the default slave address conflicts with existing bus assignments. Single-channel equivalents like MCP47FEB21 may be considered if only one output is needed, though nonvolatile features remain consistent across the series.

Digital To Analog Converters FAQ

What are the available voltage reference sources for the MCP47FEB22?

The device allows selection of the device VDD, an external VREF pin (buffered or unbuffered), or the internal band gap voltage (typically 1.22V) as the reference source.

How does the output gain configuration work?

When using the VREF pin, the output buffer gain can be set to unity (1x) or double (2x). If the internal band gap is selected, the buffer has a fixed 2x gain.

What is the function of the Nonvolatile Memory Write Protect bit?

The WP bit prevents accidental modification of the nonvolatile EEPROM data, ensuring that saved DAC settings and device configurations remain intact during operation.