MCP48FEB14-20E/ST

Digital To Analog Converters Overview

The MCP48FEB14-20E/ST is a quad-channel, 10-bit buffered voltage output Digital-to-Analog Converter (DAC) from Microchip Technology. It features nonvolatile EEPROM memory for DAC register and configuration retention. The device operates on a single supply voltage ranging from 2.7V to 5.5V, with reduced specifications available between 1.8V and 2.7V. It utilizes an SPI serial interface supporting write speeds up to 20 MHz and read speeds up to 10 MHz. Key electrical parameters include a typical settling time of 7.8 µs, a maximum INL of ±1.5 LSB, and a maximum DNL of ±0.5 LSB. The unit is housed in a 20-Lead TSSOP package and supports an extended operating temperature range of -40°C to +125°C.

Digital To Analog Converters Feature Summary

• Integrated nonvolatile EEPROM memory enables auto-recall of saved DAC register settings and device configuration upon power-up or brown-out reset events.
• WiperLock™ functionality prevents inadvertent changes to stored output values by utilizing high-voltage commands on specific pins.
• Flexible voltage reference architecture allows selection among external VREF pin, internal band gap source, or device VDD as the reference input.
• Configurable output gain options provide unity (1x) or double (2x) amplification depending on the selected voltage reference mode.

Digital To Analog Converters Applications

• Set point or offset trimming in industrial control systems
• Sensor calibration and signal conditioning
• Low-power portable instrumentation
• Data acquisition systems requiring multi-channel analog outputs

Digital To Analog Converters Procurement Notes

Verify the component against official Microchip datasheet DS20006362A to confirm the specific 'E' suffix indicates automotive-grade qualification if required. Ensure the ordering code matches the exact channel count and resolution. Cross-reference the package marking with the 20-Lead TSSOP physical dimensions to prevent counterfeit substitution during assembly.

Digital To Analog Converters Selection Notes

Select this model when four independent 10-bit analog outputs are required with persistent data storage. Compare against volatile RAM versions if power loss retention is unnecessary. Verify that the system's digital logic levels are compatible with the SPI interface thresholds across the intended operating voltage range.

Digital To Analog Converters Part Context

This component belongs to the MCP48FXBX4/8 family of digital-to-analog converters. The family differentiates models based on channel count (quad vs. octal), resolution (8, 10, or 12 bits), and memory type (RAM vs. EEPROM). The MCP48FEB14 specifically denotes the quad-channel, 10-bit variant with EEPROM capabilities.

Digital To Analog Converters Replacement Considerations

MCP48FEB14T-20E/ST: Tape-and-reel packaging equivalent.

Digital To Analog Converters FAQ

What is the function of the LAT pins on the MCP48FEB14?

The LAT pins serve as latch inputs to update the DAC registers simultaneously. They also support WiperLock™ technology when driven with high-voltage signals to protect stored data.

How does the device handle power-down modes?

Power-down modes disconnect the output buffer to create a high-impedance state or select pull-down resistors (1kΩ or 125kΩ) to minimize current consumption while retaining memory contents.

Can the MCP48FEB14 operate with an external voltage reference?

Yes, the device supports an external VREF pin which can be used in either buffered or unbuffered modes, providing flexibility for applications requiring precise external reference voltages.