MCP4251T-503E/SL

Memory Type:	Volatile
Base Part Number:	MCP4251
Supplier Device Package:	14-SOIC
Package / Case:	14-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C
Resistance - Wiper (Ohms) (Typ):	75
Temperature Coefficient (Typ):	150 ppm/°C
Tolerance:	±20%
Features:	--
Voltage - Supply:	1.8 V ~ 5.5 V
Series:	--
Interface:	SPI
Resistance (Ohms):	50k
Number of Taps:	257
Number of Circuits:	2
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction:The MCP4251T-503E/SL is a monolithic potentiometer device that provides an adjustable voltage reference and can be used in a wide range of applications, such as digital potentiometers and data acquisition systems. It is made up of an integrated resistor array, a standard 8-bit shift register, and a micro-controller. It is designed to be used in applications where precision, reliability and small footprint are essential.Application Field:The MCP4251T-503E/SL can be used in a wide range of data acquisition and digital potentiometers applications. It is used in a variety of fields, such as instrumentation, medical, medical imaging, telecommunications, automotive, entertainment, lighting and audio. The device is suitable for voltage reference applications, where accuracy, low EMI and small footprint are required. In addition, the device is also used in automotive applications, where the ability to control and adjust the voltage output is of great benefit.Working Principle:The MCP4251T-503E/SL uses an 8-bit shift register to adjust the voltage output according to an 8-bit binary input. The shift register is controlled by the on-chip EEPROM, which stores the 8-bit binary input. This input is then passed through the shift register, where the voltage output is adjusted accordingly. The device includes a reset input, which causes the EEPROM to be reset and the shift register to return to its initial state.The device has a selectable reference voltage of 1.8V to 7.0V with an accuracy of ±2.5%. The EFUSE memory stores the current reference voltage, and this can be used by the device when the reset signal is activated. The device also has a write protect mask (WPM) feature, which prevents the control signals from being applied to the shift register while the reset signal is active.In addition, the device includes an on-chip voltage divider to provide additional voltage output range. The voltage divider will divide the reference voltage by 100. This allows the user to have a greater range of output voltages.The device also supports an interactive user interface (UI), which allows the user to configure the device for their specific application. The UI is accessed via the device’s serial port. The user interface can be used to view and adjust the reference voltage, select and enable/disable the shift register, select the desired voltage output and control the tickmarks (which are used to display the output voltage on the device’s LCD screen).Conclusion: The MCP4251T-503E/SL is an extremely versatile device which can be used in a wide variety of data acquisition and digital potentiometers applications. Its small footprint, high accuracy, and low EMI make it an ideal choice for any application requiring precision and reliability. With its on-chip voltage divider, write protect mask, and interactive user interface, the MCP4251T-503E/SL is well-suited for any application.

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