The ISL90842UIV1427Z-TK integrates four digitally controlled potentiometers (DCP) configured as variable resistors on a monolithic CMOS integrated circuit. The digitally controlled potentiometers are implemented with a combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the I2C bus interface. Each potentiometer has an associated Wiper Register (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. The DCPs can be used as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.
Feature
Four variable resistors in one package
256 resistor taps - 0.4% resolution
I2C serial interface
Wiper resistance: 70Ω typical @ 3.3V
Standby current <5µA max
Power supply: 2.7V to 5.5V
50kΩ, 10kΩ total resistance
14 Lead TSSOP
Pb-free plus anneal available (RoHS compliant)
The ISL90842UIV1427Z-TK, manufactured by Renesas Electronics Corporation, is a digital potentiometer IC. It integrates four digitally controlled potentiometers (DCP) on a monolithic CMOS integrated circuit. Each DCP has 256 positions, offering a 0.4% resolution, and a total resistance of 50 kΩ. It features a 2-wire serial (I²C) control interface, making it easy to control the position of the wipers. Housed in a 14-TSSOP package, it has a wide operating supply voltage range from 2.7V to 5.5V, low standby current of less than 5 μA max, and is Pb-free plus anneal available (RoHS compliant). It is suitable for various applications requiring resistance adjustment and control.
Benefits
Four variable resistors in one package, enabling multiple resistance adjustments in a single device
256 resistor taps providing 0.4% resolution for precise adjustments
I²C serial interface for easy digital control and communication
Wiper resistance of 70 Ω typical @ 3.3V
Low standby current <5 μA max, which is power-efficient
Wide power supply range from 2.7V to 5.5V, allowing for flexibility in different power systems
Available in a 14 Lead TSSOP package, suitable for PCB mounting
Pb-free plus anneal available (RoHS compliant), meeting environmental standards
Application Examples
Control systems where variable resistance adjustment is required
Parameter adjustments in signal processing circuits
Circuits that need precise resistance control for calibration purposes
Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
