MCP4021-502E/MS

Memory Type:	Non-Volatile
Base Part Number:	MCP4021
Supplier Device Package:	8-MSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C
Resistance - Wiper (Ohms) (Typ):	70
Temperature Coefficient (Typ):	150 ppm/°C
Tolerance:	±20%
Features:	--
Voltage - Supply:	2.7 V ~ 5.5 V
Series:	WiperLock™
Interface:	Up/Down (U/D, CS)
Resistance (Ohms):	5k
Number of Taps:	64
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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The MCP4021-502E/MS is a precise digital potentiometer based on a silicon micrometer technology which is a product of Microchip, a Silicon Valley semiconductor fabrication firm. It is one of the first, and most widely used, Digital Potentiometers (DPOTs) currently on the market. The combination of precision and repeatability make it a valuable tool in industrial applications and design, especially for those instances where physical-environmental response and stability are at a premium.Data Acquisition - Digital PotentiometersThe MCP4021-502E/MS is a highly advanced and reliable digital potentiometer in comparison to many older analog potentiometers. Digital potentiometers provide a significant improvement in both repeatability and accuracy, which is accomplished through proportionally mapping a predefined physical range onto a numerical maximum, most often 256 or 1024. A typical application for the MCP4021-502E/MS is as a variable resistor in a microcontroller driven, real-time process. A host processor, typically a microcontroller, is used for digitally controlling the actuator (or potentiometer); the output resistance range is digitally controlled by the processor, using communications such as SPI, SMBus, I2C,or the increasingly popular I2C-bus. A DPOT is preferred over an analog potentiometer in such applications due to its high precision and control in comparison to the comparatively limited resolution of an analog rotary potentiometer. The MCP4021-502E/MS operational configuration allows for stand-alone operation without the need for a separate external controller. This makes it ideal for applications in a closed loop where the DPOT establishes its own corrections and sets the desired output resistance levels. The MCP4021-502E/MS is a 100 kΩ variation offering the enhanced precision of 0.5%. Point to point non-linearity is less than 0.1%. The device incorporates a 10-bit DAC, which allows for a full-scale resolution of up to 1024 linearly addressed steps. The wiper will hold its position during power down and power up, making it excellent for systems that are uploading data to and from transient power sources. The device is capable of industrial temperature range from -40 to +125 °C and offers excellent stability with up to 50 ppm/°C ratio tracking.The MCP4021-502E/MS comes in a 10-pin MSOP (Micro Small Outline Package) with a low height profile of 1.8 mm. Therefore, this digital potentiometer is an excellent choice for space-restricted applications. The MSOP package also protects against undesired dust and moisture entering the interior of the package and affecting its performance. The MCP4021-502E/MS is a cost effective and reliable digital potentiometer that can provide a significant improvement in both repeatability and accuracy, in comparison to its analog counterparts. It offers excellent stability with up to 50ppm/°C ratio tracking, which is highly beneficial in industrial application, especially over long periods of time. The combination of precision and repeatability make it a valuable tool in industrial applications and design, especially for those instances where physical-environmental response and stability are at a premium.

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