MCP48FVB14T-20E/ST

Digital To Analog Converters Overview

The MCP48FVB14T-20E/ST is an octal-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) from Microchip Technology. It features a volatile memory architecture and communicates via a high-speed SPI interface supporting up to 20 MHz writes. The device operates on a supply voltage range of 2.7V to 5.5V, with reduced specifications available for 1.8V to 2.7V operation. Key electrical parameters include a typical settling time of 7.8 µs, rail-to-rail output capability, and a maximum INL of ±1.5 LSB. It is housed in a 20-lead TSSOP package and supports extended industrial temperature ranges.

Digital To Analog Converters Feature Summary

• Octal configuration providing eight independent buffered analog outputs within a single integrated circuit.
• SPI serial interface compatible with standard modes, enabling rapid data transfer and control.
• WiperLock™ functionality utilizes high-voltage commands to prevent inadvertent changes to stored DAC values.
• Flexible reference input options allowing selection between external pins, internal bandgap, or VDD.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial instrumentation
• Sensor calibration systems requiring multi-channel adjustment
• Motor control applications needing precise voltage regulation
• Data acquisition systems utilizing multiple analog outputs

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'T' indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm that the 'V' designation corresponds to the volatile RAM version, as nonvolatile EEPROM variants exist within the same family. Ensure compatibility with the required operating voltage range and temperature specifications before finalizing procurement orders.

Digital To Analog Converters Selection Notes

Select this component when an application requires eight simultaneous analog outputs with 10-bit resolution. Consider the volatile memory characteristic, which necessitates re-initialization after power cycles. Evaluate the SPI speed requirements against the 20 MHz write limit. Compare against the EEPROM-based MCP48FEB14 series if nonvolatile storage is mandatory for maintaining settings during power loss.

Digital To Analog Converters Part Context

This part belongs to the MCP48FXBX4/8 family of digital-to-analog converters. The 'VB' prefix specifically identifies the volatile memory variant, distinguishing it from the 'EB' EEPROM versions. The '14' indicates 10-bit resolution, while 'B' denotes the octal channel count. This family shares common architectural features including the WiperLock technology and flexible reference configurations.

Digital To Analog Converters Replacement Considerations

MCP48FVB14-E/ST: Identical functional specifications but differs in packaging format; verify if tube packaging is acceptable for the assembly process.

Digital To Analog Converters FAQ

Does the MCP48FVB14T-20E/ST retain DAC settings after power loss?

No, the 'V' in the part number indicates volatile RAM memory. Settings are lost upon power removal, unlike the 'EB' EEPROM variants which retain data.

What is the maximum SPI clock frequency for writing data?

The device supports write operations at frequencies up to 20 MHz, while read operations are supported up to 10 MHz.

How does the WiperLock feature function?

WiperLock prevents accidental modification of DAC registers by requiring a specific high-voltage signal on the LAT pin combined with dedicated SPI commands to unlock or lock the memory.