MCP4341-502E/ML

Memory Type:	Non-Volatile
Base Part Number:	MCP4341
Supplier Device Package:	20-QFN-EP (4x4)
Package / Case:	20-VFQFN Exposed Pad
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:	129
Number of Circuits:	4
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Active
Packaging:	Tube

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MCP4341-502E/ML Application Field and Working PrincipleWhen it comes to data acquisition, digital potentiometers are one of the most popular solutions. In this regard, the Microchip Technology\'s MCP4341-502E/ML delivers exceptional performance with precision calculation. From electronic design and test to system control, this device is a standout solution with its advanced design and features. Here, we provide a detailed look at its application field and working principle.The MCP4341-502E/ML is a volatile, single-channel, 128-tap, non-volatile digital potentiometer which by default enables 50 kΩ resistance with a precision up to 0.5%. It is manufactured by Advanced Micro Devices (AMD) as a versatile, ultra low-power MOSFET device. The working power is 2.7 to 5.5V and the maximum on-state resistance (RDS(ON)) is 8 Ω. It can be programmed via its Serial Peripheral Interface (SPI) to select the desired resistance setting.The main application field for this device is for voltage regulation, current programming and analog signal conditioning. This includes setting the gain for amplifiers, as well as controlling the levels of DC motors and other similar controllers. The high accuracy of the device allows it to be used in applications that require very precise control and monitoring, such as medical systems, automotive systems and communication systems. It can also be used to trim reference voltage and used in transistor gate bias voltage programming.In terms of operation, the MCP4341-502E/ML consists of two types of potentiometer sections: the variable resistor and the adjustable resistor. The variable resistor is one with a fixed resistance and is the one generally known as a potentiometer. The adjustable resistor is the one with an on-state resistance, RDS(ON), which can be programmed via its SPI interface to select the desired resistance setting.The device is programmed via dedicated SPI port and powered independently from the MCU/CPU. This allows the device to work with less power and operate independent from the main power and clock, reducing the circuit stress. The adjustment process is done through the programmable code that configures the resistance value. One of the advantages of the device is that the data are retained even when the power is removed and all commands can be saved in Non-Volatile Memory. The configuration can also be changed on-demand and the control pins can be adjusted using 3-wire programming, reducing the application design complexity.The SPI port supports multiple command modes and is also compatible with microcontrollers like the 8-bit PIC, AVR and ARM microcontrollers. It is pin-compatible with the MCP4351 and MCP4361 devices, which enables users to design their system around the MCP4341 and transition to higher resistance value products without modifying the hardware design. This makes the device ideal to use in applications that require both superior performance and scalability.The MCP4341-502E/ML is a great choice for a wide range of applications, providing impressive performance and reliability. With its advanced design, robust features and low-power operation, the device is a great option for any data acquisition need.

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