MCP4361-502E/ST

Memory Type:	Non-Volatile
Base Part Number:	MCP4361
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm 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:	WiperLock™
Interface:	SPI
Resistance (Ohms):	5k
Number of Taps:	257
Number of Circuits:	4
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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Introduction

The MCP4361-502E/ST is a device in Texas Instruments’ Digital Potentiometer family. This device is a 256-tap digital potentiometer that can be used to control the output of devices in the data acquisition and control space. The device features a two-wire serial interface (I2C), allowing the user to control the output of the device through programming. The device is used in a wide variety of applications such as industrial and automotive control, digital controllers, and communications systems.

Application Field

The MCP4361-502E/ST can be designed into many different digital control applications. The device can be used for motor control, digital-to-analog converters, mixers, and dynamic systems. The device can also be used in light dimming systems, robotic systems, and environmental control systems. In each of these application spaces, the device is used to control the output of a device or system through its programming. The device is also used in communication systems and wireless applications, where it can be used to regulate the power levels and system parameters. Additional uses of the device include controlling LED brightness, dimmers, robotic arms and other motion control applications. In addition to these applications, the device is also used in general purpose monitoring, including the monitoring of pressure, temperature, and other environmental parameters. The device is also used in digital settable potentiometers, where it can be set to maintain a desired output level. This is useful in automotive and industrial systems, where precise control is needed.

Working Principle

The MCP4361-502E/ST is based on TI’s proprietary voltage controlled digital potentiometer technology. An internal digital-to-analog converter (DAC) is used to convert a digital input into an analog voltage. The device is programmed using the I2C serial interface, which allows the user to select a tap value between 0 and 255. The output voltage can then be adjusted by changing the tap value. The output voltage is calculated by taking the ratio of the tap setting to the total number of taps. The device is powered by a single 3.3V power source and is capable of sinking up to 100mA and sourcing up to 20mA of current. The MCP4361-502E/ST features two separate I2C ports: one to program and one to monitor. The programming interface allows the user to select and program the tap values, while the monitoring interface allows the user to monitor the device’s output voltage. The device also features an internal EEPROM memory which allows the user to store and recall up to 32 presets. This is useful in applications where the user needs to quickly switch between different output voltage levels. The device also has a lock bit feature which prevents the user from changing the stored presets.

Conclusion

The MCP4361-502E/ST is a versatile device in TI’s Digital Potentiometer family. The device is used in a variety of applications, from lighting systems to robotic control. The device is based on TI’s proprietary voltage controlled digital potentiometer technology and features an I2C serial interface for programming and a monitoring interface for monitoring the output voltage. The device also features an internal EEPROM for storing and recalling presets and a lock bit for preventing unintended changes.

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