MCP47FVB21A2T-E/ST

Digital To Analog Converters Overview

The MCP47FVB21A2T-E/ST is a dual-channel, 12-bit volatile digital-to-analog converter (DAC) manufactured by Microchip Technology. It features an I²C serial interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes. The device operates on a supply voltage of 2.7V to 5.5V for full specifications, with reduced analog performance available from 1.8V to 2.7V. It provides rail-to-rail buffered voltage outputs with a typical settling time of 6 µs. Reference options include the internal band gap (1.22V typical), VDD, or an external VREF pin. The component is housed in an 8-lead TSSOP package and supports an extended operating temperature range of -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Dual-channel architecture providing two independent 12-bit buffered voltage outputs within a single compact package.
• I²C-compatible serial interface enabling communication via Standard, Fast, and High-Speed modes with multiple slave address options.
• Configurable power-down modes that disconnect the output buffer or select specific pull-down resistor values to minimize current consumption.

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the complete part number against official Microchip documentation to confirm the specific suffixes for packaging and temperature grade. Ensure the ordering information matches the required channel count and resolution before procurement. Cross-reference the datasheet revision to validate all electrical characteristics and timing parameters relevant to your design implementation.

Digital To Analog Converters Selection Notes

Select this component when a dual-channel solution is required without the need for non-volatile memory storage. Evaluate the system's power budget against the specified normal and power-down current consumption levels. Confirm that the I²C bus speed requirements align with the supported Standard, Fast, or High-Speed modes defined in the interface specifications.

Digital To Analog Converters Part Context

This device belongs to the MCP47FVBXX family of volatile DACs. It shares architectural similarities with the non-volatile MCP47FEBXX series but utilizes RAM instead of EEPROM for data retention. The '2' in the model indicates a dual-channel configuration, while '1' denotes 12-bit resolution. This places it between single-channel variants and higher-density multi-channel devices in the product lineup.

Digital To Analog Converters Replacement Considerations

MCP47FVB22A2T-E/ST: Single-channel 12-bit variant.

Digital To Analog Converters FAQ

What are the available reference voltage sources for the MCP47FVB21?

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

How does the gain setting affect the VREF pin usage?

When using the external VREF pin, the output buffer gain can be set to 1x or 2x. If the gain is set to 2x, the VREF pin voltage must be limited to a maximum of VDD/2.

What is the typical settling time for this DAC?

The typical VOUT settling time is 6 µs, measured within a ±1 LSB error band with a 100 pF load capacitance.