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

I

2C 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.

特性 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