MCP47FVB18T-20E/ST

Digital To Analog Converters Overview

The MCP47FVB18T-20E/ST is an octal-channel, 10-bit volatile digital-to-analog converter (DAC) from Microchip Technology. It features a buffered voltage output with rail-to-rail capability and a typical settling time of 7.8 µs. The device operates on a supply voltage range of 2.7V to 5.5V for full specifications, or 1.8V to 2.7V for reduced analog performance. It utilizes an I²C interface supporting Standard (100 kHz), Fast (400 kHz), High-Speed (1.7 MHz), and up to 3.4 Mbps modes. Memory retention is maintained down to the RAM retention voltage (V_RAM).

Digital To Analog Converters Feature Summary

• Octal configuration providing eight independent buffered voltage outputs.
• I²C serial interface with support for high-speed data transfer rates up to 3.4 Mbps.
• Multiple voltage reference source options including external VREF pin, internal band gap, and device VDD.
• WiperLock™ functionality utilizing high-voltage commands to prevent inadvertent memory changes.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial systems
• Sensor calibration requiring multiple channels
• Low-power portable instrumentation
• Data acquisition systems
• Motor control applications

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and tape-and-reel quantity. Ensure the component matches the required volatile memory specification, as nonvolatile EEPROM variants exist within the same family. Confirm that the operating environment supports the specified extended temperature range of -40°C to +125°C.

Digital To Analog Converters Selection Notes

Select this model when eight simultaneous DAC channels are required without the need for power-cycle data retention. The volatile memory architecture offers lower power consumption during standby compared to nonvolatile versions. Verify that the system design accommodates the high-voltage input requirements if WiperLock™ protection is utilized to secure register values.

Digital To Analog Converters Part Context

This component belongs to the MCP47FXBX4/8 family of 8/10/12-bit Digital-to-Analog Converters. The 'VB' designation indicates volatile RAM storage, distinguishing it from the 'EB' series which includes EEPROM. The '18' suffix specifies the 10-bit resolution and octal channel count, while the '20E/ST' identifies the 20-lead TSSOP package and commercial/industrial temperature grade.

Digital To Analog Converters Replacement Considerations

MCP47FVB18-E/ST: Identical electrical specifications but supplied in tube packaging instead of tape and reel.

Digital To Analog Converters FAQ

Does the MCP47FVB18T-20E/ST retain its output value after power loss?

No, this device uses volatile RAM. Upon power-up, the DAC outputs default to the factory-set POR/BOR value unless the system restores the previous state via the I²C interface.

What is the maximum data rate supported by the I²C interface?

The device supports Standard mode (100 kbps), Fast mode (400 kbps), High-Speed mode (1.7 Mbps), and can operate at speeds up to 3.4 Mbps.

How does the WiperLock™ feature function?

WiperLock™ prevents accidental modification of stored values by requiring a high-voltage signal on the LAT/HVC pin combined with specific I²C commands to lock or unlock the memory registers.