MCP4011T-202E/SN

Memory Type:	Volatile
Base Part Number:	MCP4011
Supplier Device Package:	8-SOIC
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Operating Temperature:	-40°C ~ 125°C
Resistance - Wiper (Ohms) (Typ):	70
Temperature Coefficient (Typ):	150 ppm/°C
Tolerance:	±20%
Features:	--
Voltage - Supply:	1.8 V ~ 5.5 V
Series:	--
Interface:	Up/Down (U/D, CS)
Resistance (Ohms):	2.1k
Number of Taps:	64
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Data Acquisition - Digital PotentiometersDigital potentiometers, also known as DigiPots, are electronic components used in applications that require a variable resistance to be set and adjusted electronically, rather than by manually rotating a knob. The MCP4011T-202E/SN is one such type of digital potentiometer that is widely used in industrial and consumer applications.This particular digital potentiometer is a pair of 8-bit volume control devices that feature an integrated EEPROM. The EEPROM allows one or both of the potentiometers to be scanned and set to specific values each time the device is powered on. As a result, the MCP4011T-202E/SN offers greater functionality than a conventional potentiometer, as it can not only be used to adjust the resistance in a circuit, but also to store user-defined settings that can be recalled quickly and easily.In terms of its application area, the MCP4011T-202E/SN is suitable for a range of industrial and consumer devices, including volume control on streaming audio devices, as well as certain medical and automotive applications. From an operational standpoint, the chip can handle resolutions of up to 8-bits (256 steps) while offering a nominal supply voltage of 2.5V. It is also capable of providing up to 10kΩ of adjustment and supports maximum ratings of 15V and 2A respectively.In terms of the working principle, the MCP4011T-202E/SN utilizes an application specific integrated circuit (ASIC) controlled by two I2C bus requests. The first bus (SCL) is used to enable control of the wiper position, level shifting and storage, while the second (SDA) is responsible for transmitting and receipt of data from the chip. When both these requests are communicated correctly, the ASIC then responds by changing the resistance value accordingly.The resistance value is changed by controlling the channel selection and then adjusting the wiper position. A selection of channel registers are included, each of which holds a wiper value which the wiper follows in response to a command. For example, if a particular register holds the wiper position of 15, then the wiper will move to this position when the register address is referenced.Overall, the MCP4011T-202E/SN is an effective digital potentiometer that can be used in a range of industrial and consumer applications. Its integrated EEPROM allows users to quickly and easily adjust the resistance value in their circuit, as well as store pre-defined settings. Additionally, the highly programmable nature of the chip means that it can provide up to 8-bits of resolution and offers maximum ratings of 15V and 2A respectively.

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