MCP47FEB21A2T-E/ST

Digital To Analog Converters Overview

The MCP47FEB21A2T-E/ST is a single-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features nonvolatile EEPROM memory and an I²C serial interface supporting Standard (100 kbps), Fast (400 kbps), and High-Speed (up to 3.4 Mbps) modes. The device operates within a supply voltage range of 1.8V to 5.5V, with full specifications guaranteed from 2.7V to 5.5V. Key electrical parameters include a typical settling time of 6 µs, rail-to-rail output capability, and low power consumption of less than 180 µA in normal operation. It is housed in an 8-lead TSSOP package and supports an extended operating temperature range 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/Brown-out Reset output states upon power cycling.
• Configurable voltage reference sources including the VDD pin, external VREF pin, or internal band gap voltage, with selectable unity or 2x output buffer gain.
• I²C-compatible serial interface allowing for four predefined slave addresses or user-programmable 7-bit addressing across multiple communication speeds.
• Power-down modes that disconnect the output buffer or select specific pull-down resistor values to minimize current consumption during inactive periods.

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'A2' against the manufacturer's official documentation to confirm pinout compatibility and any unique factory defaults. Ensure the selected package variant matches the required PCB footprint. Confirm that the I²C slave address configuration aligns with the system bus requirements before finalizing procurement.

Digital To Analog Converters Selection Notes

Select this component when a single-channel 12-bit resolution is required alongside persistent data storage for calibration values. Consider the 1.8V to 5.5V operating range for compatibility with various logic levels. Evaluate the need for high-speed I²C communication up to 3.4 Mbps and the benefit of auto-recall features for system reliability during power cycles.

Digital To Analog Converters Part Context

This part belongs to the MCP47FEBXX family of digital-to-analog converters, which includes 8-bit, 10-bit, and 12-bit variants in both single and dual-channel configurations. The family shares common features such as nonvolatile memory, I²C interfaces, and similar packaging options, providing a scalable solution for various precision analog output needs.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same family include MCP47FEB01A2T-E/ST (8-bit) and MCP47FEB11A2T-E/ST (10-bit) for lower resolution requirements. For dual-channel applications, consider MCP47FEB22A2T-E/ST. Verify pin compatibility and memory specifications when cross-referencing with other manufacturers' I²C DACs.

Digital To Analog Converters FAQ

What are the available voltage reference source options for the MCP47FEB21?

The device allows selection of the VDD pin, an external VREF pin, or the internal band gap voltage (typically 1.22V) as the reference source. When using the VREF pin, the output buffer gain can be configured for unity or 2x.

How does the nonvolatile memory function in this DAC?

The integrated EEPROM stores the DAC register setting, voltage reference selection, gain, and power-down mode. These settings are automatically recalled upon power-up or brown-out reset, ensuring the DAC returns to its last programmed state without requiring re-initialization.

What is the maximum I²C clock speed supported by this device?

The MCP47FEB21 supports Standard Mode (100 kbps), Fast Mode (400 kbps), and High-Speed Mode, which operates at up to 3.4 Mbps.