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The ISL22346WMVEP integrates four digitally controlled potentiometers (DCP) and non-volatile memory 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 volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that can be directly written to and read by the user. The contents of the WR controls the position of the wiper. At power-up, the device recalls the contents of the two DCP's IVR to the corresponding WRs.

The DCPs can be used as a three-terminal potentiometers or as a two-terminal variable resistors in a wide variety of applications including control, parameter adjustments and signal processing.

Device Information
The specifications for an Enhanced Product (EP) device are defined in a Vendor Item Drawing (VID), which is controlled by the Defense Supply Center in Columbus (DSCC). "Hot-links" to the applicable VID and other supporting application information are provided on our website.

Key Features

• Specifications per DSCC VID V62/08605-01XE
• Full Mil-Temp Electrical Performance from -55°C to +125°C
• Controlled Baseline with One Wafer Fabrication Site and One Assembly/Test Site
• Full Homogeneous Lot Processing in Wafer Fab
• No Combination of Wafer Fabrication Lots in Assembly
• Full Traceability Through Assembly and Test by Date/Trace Code Assignment
• Enhanced Process Change Notification
• Enhanced Obsolescence Management
• Eliminates Need for Up-Screening a COTS Component
• Four Potentiometers in One Package
• 128 Resistor Taps
• I2C Serial Interface
  • Three Address Pins, Up To Eight Devices/Bus
• Non-volatile Storage of Wiper Position
• Wiper Resistance: 70Ω Typical @ 3.3V
• Shutdown Mode
• Shutdown Current 5µA Max
• Power Supply: 2.7V to 5.5V
• 10kΩ Total Resistance
• High Reliability
  • Endurance: 1,000,000 Data Changes Per Bit Per Register
  • Register Data Retention:
  • 10 years @ T ≤ +125°C
  • 15 years @ T ≤ +90°C
  • 50 years @ T ≤ +55°C
• 20 Ld TSSOP