MCP47FVB21A3-E/ST

Digital To Analog Converters Overview

The MCP47FVB21A3-E/ST is a single-channel, 12-bit buffered voltage output Digital-to-Analog Converter (DAC) manufactured by Microchip Technology. It features volatile memory and an I²C serial interface supporting Standard (100 kHz), Fast (400 kHz), and High-Speed (up to 3.4 MHz) modes. The device operates within a supply voltage range of 2.7V to 5.5V for full specifications, or 1.8V to 2.7V with reduced analog performance. Key electrical parameters include a typical settling time of 6 µs, normal operation current below 180 µA, and power-down current of 650 nA. It offers rail-to-rail output and selectable reference sources including VDD, external VREF, or an internal bandgap.

Digital To Analog Converters Feature Summary

• Supports high-speed I²C communication up to 3.4 Mbps
• Provides configurable output gain options of 1x or 2x
• Includes power-on and brown-out reset protection
• Features low-power consumption with multiple power-down modes

Digital To Analog Converters Applications

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

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'A3' against the official datasheet to confirm pinout and package variations. Ensure the E/ST designation matches the required TSSOP-8 package and industrial temperature range. Confirm that the volatile memory type aligns with system requirements, as data is lost upon power removal.

Digital To Analog Converters Selection Notes

Select this component when a single-channel 12-bit resolution is required with I²C connectivity. Consider the MCP47FVB21A3-E/ST over non-volatile variants if power consumption during standby is critical, noting that DAC values must be reloaded after power cycles. Verify that the 6 µs settling time meets the application's speed constraints.

Digital To Analog Converters Part Context

This part belongs to the MCP47FVBXX family of single and dual-channel DACs. It shares the same core architecture and interface protocols as other members in the series, differing primarily in channel count and resolution. The 'VB' prefix indicates volatile memory, distinguishing it from the 'EB' series which utilizes EEPROM for non-volatile storage.

Digital To Analog Converters Replacement Considerations

MCP47FVB21A3T-E/ST

Digital To Analog Converters FAQ

What happens to the DAC output value when power is removed?

Since the MCP47FVB21A3-E/ST uses volatile RAM, the stored DAC value is lost when power is removed. The output will revert to its default state, typically determined by the power-on reset configuration.

Can the internal bandgap voltage be used as the reference source?

Yes, the device allows selection of the internal bandgap voltage (typically 1.22V) as the reference source. When using this option, the output buffer gain is automatically set to 2x.

What is the maximum operating frequency for the I²C interface?

The I²C interface supports Standard mode (100 kHz), Fast mode (400 kHz), and High-Speed mode, which can operate at frequencies up to 3.4 MHz.