MCP4442T-503E/ST

Memory Type:	Non-Volatile
Base Part Number:	MCP4442
Supplier Device Package:	14-TSSOP
Package / Case:	14-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:	Selectable Address
Voltage - Supply:	1.8 V ~ 5.5 V
Series:	WiperLock™
Interface:	I²C
Resistance (Ohms):	50k
Number of Taps:	129
Number of Circuits:	4
Configuration:	Rheostat
Taper:	Linear
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Data Acquisition - Digital Potentiometers is an area of technology dealing with controlling a variable voltage output with an application-specified resistance element, typically a digital potentiometer. The MCP4442T-503E/ST is one such device and is commonly used for applications such as controlling the power output for automotive audio applications, and even for calibrating integrated circuits. This section will discuss the application field and working principle of the MCP4442T-503E/ST. ApplicationsThe MCP4442T-503E/ST is an 8-bit SPDT (Single Pole Double Throw) digital potentiometer. It is typically used in a variety of applications such as audio and power applications, motor control, and embedded system development. It is commonly used in the automotive industry for controlling the power output for car audio applications. Additionally, it can be used for calibration of integrated circuits for medical, industrial, and consumer electronics. The MCP4442T-503E/ST is designed to be extremely versatile and capable of operating in a wide variety of temperature and environmental conditions. The device is also designed to take full advantage of its 1kΩ and 7.5kΩ default resistances, providing the user with a wide range of resistance and voltage output levels to choose from. Additionally, the device is built on a Hybrid CMOS technology for more power efficiency and better signal conditioning than other standard digital potentiometers.Working PrincipleThe MCP4442T-503E/ST digitally processes signals and provides a variable output signal. The signal is generated when the user adjusts the electrical resistance and associated voltage output, which is typically known as a wiper resistance.The MCP4442T-503E/ST uses a unique circuit design to facilitate the resistance and voltage output control. In order to control the resistance and voltage output, the device features an on-board control system. This system receives a signal from the external circuitry, or the microprocessor, and converts it into an 8-bit digital signal which is then converted into a wiper resistance and voltage output. The MCP4442T-503E/ST has two main operating modes: Single-Channel Mode and Dual-Channel Mode. In Single-Channel Mode, the MCP4442T-503E/ST provides output either from the A (high) Channel, the B (low) Channel, or a combination of the two channels. In Dual-Channel Mode, two separate channels are used with one channel providing a wiper resistance and the other providing a wiper common resistance.This device also has a power-down feature which allows the user to save battery power and conserve energy while in operation. This feature turns off the wiper when no wiper resistance is detected and shuts down the electronic circuits when the device is not in use.In order to ensure proper operation, the MCP4442T-503E/ST includes a temperature sensor and a temperature tolerance mechanism. This ensures that the device operates within a safe operating temperature range and that it is not damaged due to external temperature fluctuations. The device also includes an internal voltage regulator to maintain a steady voltage output throughout its life.ConclusionThe MCP4442T-503E/ST digital potentiometer is a reliable, efficient, and versatile device for the automation and control of various audio and power applications in the automotive industry. It is capable of controlling both the wiper resistance and the associated voltage output, making it suitable for use in many different environments. Additionally, this device offers the user a wide range of resistance and voltage output levels, as well as power-down and temperature tolerance mechanisms for improved energy efficiency and reliability.

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