ISL22429UFU10Z-TK

Memory Type:	Non-Volatile
Base Part Number:	ISL22429
Supplier Device Package:	10-MSOP
Package / Case:	10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 125°C
Resistance - Wiper (Ohms) (Typ):	70
Temperature Coefficient (Typ):	±80 ppm/°C
Tolerance:	±20%
Features:	--
Voltage - Supply:	2.7 V ~ 5.5 V
Series:	XDCP™
Interface:	SPI
Resistance (Ohms):	50k
Number of Taps:	128
Number of Circuits:	2
Configuration:	Potentiometer
Taper:	Linear
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Data Acquisition - Digital Potentiometers

Digital potentiometers are used for many different applications in the industrial, data acquisition and consumer markets. The ISL22429UFU10Z-TK is a digital potentiometer integrated circuit (IC) that has become popular for its features and reliability in a variety of applications.When used for data acquisition, the ISL22429UFU10Z-TK is typically used to measure and control voltage or current levels. It does so by using a number of internal resistors to set a reference voltage or current. By changing the number of resistors connected in series, the reference voltage can be precisely adjusted. The number of resistors connected in series is known as “taps” and it is adjustable in “steps” of typically 10. The steps represent a fixed resistance through which the voltage or current is divided. The output value of each step is called a “bin”.The I2C serial interface of the ISL22429UFU10Z-TK is used to control the number of taps, the output range and the direction of current flow. The I2C interface allows an embedded processor to poll the outputs. The I2C interface also allows for multiple chips to be connected to the same I2C bus, allowing for multiple digital potentiometers to be used in the same system.The ISL22429UFU10Z-TK is configured as a rheostat (variable resistance). This allows for a low signal signal power consumption and optimum performance at low currents. When used as a rheostat, the ISL22429UFU10Z-TK can be operated in either a single-ended mode or a differential mode.In single ended mode, the two ends of the resistor are connected between the power (VCC) and ground (GND) pins of the chip. The output is taken from one of the resistive divider taps (bin) and the value of the resistive divider is determined by the number of taps that are enabled.In differential mode, the two ends of the resistor are connected between the two output pins of the chip, VOUT and GND. The output is taken from the Vout pin and its value is determined by the number of taps that are enabled. The output range is determined by the types of resistive divider that are used. The ISL22429UFU10Z-TK can be programmed for a range of output voltages or currents ranging from 0V to 8V or 0mA to 8mA.The ISL22429UFU10Z-TK digital potentiometer is also capable of providing an external pulse triggered reset mode. This feature can be used to reset the number of taps and to start a pre-programmed sequence of taps.The ISL22429UFU10Z-TK is a versatile and powerful digital potentiometer. Its I2C interface and reset mode make it a useful digital potentiometer for industrial, data acquisition and consumer applications. In addition, its low current drain and wide range of output voltages/currents make it suitable for a variety of applications.

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