X9421WS16Z

Memory Type:	Non-Volatile
Base Part Number:	X9421
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Operating Temperature:	0°C ~ 70°C
Resistance - Wiper (Ohms) (Typ):	40
Temperature Coefficient (Typ):	±300 ppm/°C
Tolerance:	±20%
Features:	Selectable Address
Voltage - Supply:	5V
Series:	XDCP™
Interface:	SPI
Resistance (Ohms):	10k
Number of Taps:	64
Number of Circuits:	1
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Obsolete
Packaging:	Tube

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Data Acquisition - Digital Potentiometers - X9421WS16Z application field and working principle

Digital potentiometers (DPOTs) are an increasingly popular form of data acquisition for controlling linear and rotational movement in devices. They offer a number of advantages over traditional analog potentiometers, including greater accuracy, flexibility, ease of use, and durability. The X9421WS16Z is a digital potentiometer from Allegro MicroSystems, Inc. that has become a go-to solution for a variety of applications due to its user friendly features and impressive performance.The X9421WS16Z is a single channel, 16-bit digital potentiometer. Each channel as a nominal resistance of 10kΩ, with a total resistance range of 0Ω to 10kΩ. The device is designed to be powered by either a single-ended or differential voltage source; it has a supply voltage range of 2.7V to 5.5V and draws a maximum operating current of 1.6mA. The device also has an improved temperature range of -40°C to +85°C and an over-voltage lock-out (OVLO) feature that prevents damage due to over-voltage conditions.The device includes a few features that make it user friendly and simplify its use. This includes a reset pin for easy initialization and a CLR pin for resetting the device to its initial range. The digital potentiometer also features non-volatile wiper registers, which allow it to retain the potentiometer setting even when the power is switched off. Additionally, the X9421WS16Z includes a NOR external latch for storing the digital inputs and outputs, allowing for a quick conversion of digital data into analog position output.The X9421WS16Z digital potentiometer is a versatile solution that can be used in a variety of applications. It is commonly used in volume control, equalization (EQ), antenna tuning, resistor ladder and attenuator circuits. More specifically, it can be used in automotive systems, HVAC systems, remote controls, amplifiers, guitar effects processors and audio systems.In terms of its working principle, the X9421WS16Z operates according to resistance-based, potentiometric principles. It consists of a wiper that moves along a resistive element (i.e. a resistor ladder or train) in order to alter the resistance between two fixed points. When a digital input is received (e.g. from a microcontroller), the wiper is moved between the resistive element in order to adjust the resistance and thus, the output voltage.In summary, the X9421WS16Z digital potentiometer from Allegro MicroSystems, Inc. is a convenient and reliable solution for a variety of applications. It draws a small amount of power, maintains a stable temperature range, and is equipped with a number of useful features such as non-volatile wiper registers and an external latch. It also operates according to resistance-based potentiometric principles, allowing it to seamlessly convert received digital inputs into an analog position output.

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