MCP4131-103E/SN

Memory Type:	Volatile
Base Part Number:	MCP4131
Supplier Device Package:	8-SOIC
Package / Case:	8-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):	10k
Number of Taps:	129
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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Data Acquisition - Digital Potentiometers

Digital Potentiometers, in general, are resistors that can be adjusted electronically. The microchip MCP4131-103E/SN is one such digital potentiometer. It is an 8-bit digital variable resistor manufactured in a SOIC package and released by leading semiconductor manufacturer, Microchip Technology Inc.The primary application of the MCP4131-103E/SN digital potentiometer is data acquisition. Its two major features – the integrated non-volatile memory, and its 8-bit resolution – and makes it ideal for applications where there is a need to select and monitor a specific resistance. For example, those working with audio and video equipment often use digital potentiometers to adjust the values of amplifiers, or to control the tones of sound systems.The working principle of the MCP4131-103E/SN digital potentiometer is quite simple. It contains two resistors – a fixed resistor and a variable resistor, connected in series. The resistance value of the variable resistor, Rt, can be set using the on-chip 8-bit shift register. The output voltage of the device is determined by the output current flowing through both resistors.The on-chip 8-bit shift register allows a wide range of different resistance values to be set by the user. Additionally, the MCP4131-103E/SN has an integrated non-volatile memory, allowing the device to maintain the set resistance value even when the power is cycled.In terms of performance, the MCP4131-103E/SN offers an excellent resistance range (1kohm to 8kohm) and a low temperature coefficient of just 6ppm/degC, ensuring that there is minimal change in the resistance value over long periods of usage. It also has a very high wiper contact resistance (0.02 ohms), guaranteeing that there won\'t be any voltage drop issues or audible noise during operation.Given its combination of features, the MCP4131-103E/SN digital potentiometer is well suited for data acquisition. It can provide excellent precision, stability and accuracy, making it well suited for any application that requires on-demand resistance value changes. It\'s also easy to use and affordable, making it a popular choice for those looking for superior performance without breaking the bank.

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