MCP4361-104E/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):	100k
Number of Taps:	257
Number of Circuits:	4
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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Introduction
Data acquisition is an important branch in the field of engineering and technology; digital potentiometers are an essential component in many applications. MCP4361-104E/ST is a digital potentiometer, which is available in one of two typical configurations: a single or dual-channel device. The device is available to operate over a wide voltage range from 2.7V to 5.5V, and is capable of providing a maximum resolution of 4K steps.Application fields of MCP4361-104E/ST
MCP4361-104E/ST is a popular digital potentiometer device that can be found in many areas. It is used extensively in industrial and laboratory applications. Some of the most common application fields are as follows.

• General Purpose Controls: This device is ideal for controlling industrial motors and other motion control devices, actuators, and valves. Additionally, it can be used in the automotive industry to control steering, brakes, and windshield wipers.
• Signal Processing and Audio Electronics: MCP4361-104E/ST is used in a range of applications which involve signal processing and audio electronics. These include digital signal amplifiers, audio mixer consoles, audio effects units, sound reinforcement systems, as well as a range of musical instruments.
• Audio/Video Equipment: This device is also used in TVs, video projectors, satellite receivers, DVD players, and other audio/video equipment for adjusting the volume and other parameters.
• Sensors and Measurement: This device can be incorporated into a range of medical and aerospace sensors, as well as the control of flow or pressure switches and pressure sensors.

Working Principle of MCP4361-104E/ST
The MCP4361-104E/ST is an adjustable linear digital potentiometer operated by a current/voltage source. The device consists of two parts; the potentiometer section and the control section.In the potentiometer section, two resistors are interconnected between two terminals at both ends; the third terminal is connected at the center in between. The value of the center resistance is adjustable, and the two other terminals output the value of the resistance between them. The main feature of this device is that the resistance value can be changed electronically; this is done by applying a voltage/current to a control terminal.In the control section, the device contains a voltage regulator and a current regulator. These regulators act as current sources which create a small current running between both ends of the potentiometer. A voltage/current applied at the control terminal will influence the current and consequently the resistance between the two other terminals. By changing the voltage or current of the regulator circuit, the resistance value can be adjusted.Conclusion
The MCP4361-104E/ST is a digital potentiometer, available in both single and dual-channel configurations. This device offers a resolution of up to 4K steps and has a wide range of applications which involve general purpose controls, signal processing and audio electronics, and audio/video equipment. In terms of operation, the device consists of two sections - the potentiometer section and the control section. The potentiometer section contains two resistors connected between the two end terminals and a third at the centre, which is adjustable. The control section consists of a voltage and a current regulator which create a small current between both ends of the potentiometer, and a voltage/current applied at the control terminal will influence the current and consequently the resistance between the two other terminals.

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