X95840WV20IZ-2.7T1

X95840WV20IZ-2.7T1 is a quad digital controlled potentiometer (XDCP™). The X95840 integrates four digitally controlled potentiometers (XDCP) 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 is controlled by the user through the I2C bus interface. Each potentiometer has an associated volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR), which can be directly written to and read by the user. The contents of the WR control the position of the wiper. At power up the device recalls the contents of the four DCP’s IVR to the corresponding WRs. The DCP can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of applications including control, parameter adjustments, and signal processing.

• 256 resistor taps-0.4% resolution
• I2C serial interface, three address pins, up to eight devices/bus
• Wiper resistance is 70 ohm typical at 3.3V
• Non-volatile storage of wiper position
• Standby current is 5µA maximum
• Power supply range from 2.7V to 5.5V
• Endurance is 150,000 data changes per bit per register
• Register data retention is 50 years at T = 75°C
• 10Kohm resistance, 20 Ld TSSOP package
• Temperature range (industrial) from -40°C to 85°C