The X9409 is a low noise, low power, 2-wire bus quad digitally controlled potentiometer (XDCP). It features four potentiometers per package with 64 resistor taps. It supports a 2-wire serial interface for write, read, and transfer operations of the potentiometer. The operating voltage range is from 2.7V to 5.5V. It has non-volatile data registers and non-volatile storage of multiple wiper positions. The saved wiper position is loaded on power-up.
The Intersil X9409 integrates four digitally controlled potentiometers (XDCP) on a single monolithic CMOS integrated microcircuit. Each potentiometer is implemented using 63 resistive elements in a series array, providing 64 resistor taps. The device features a 2-wire serial interface for write, read, and transfer operations, allowing the user to control the wiper position via a host system.
The X9409 includes four non-volatile data registers for each potentiometer, enabling the storage of multiple wiper positions. Upon power-up, the device recalls the saved wiper position from these registers. Key features include a typical wiper resistance of 50Ω at 5V, a system voltage range of 2.7V to 5.5V, and low power consumption with a standby current of less than 1pA typical. The device is available in 24-lead SOIC and TSSOP packages and is RoHS compliant.
| Number of potentiometers per package | Four |
|---|---|
| Number of resistor taps | 64 |
| Wiper resistance (typical) | 50Ω at 5V |
| System voltage range | 2.7V to 5.5V |
| End-to-end resistance options | 10k, 2.5kΩ |
| Data retention time | 100 years |
| Data endurance | 100,000 data changes per bit per register |
| Standby current (typical) | < 1pA |
The typical wiper resistance is 50Ω at 5V.
The X9409 integrates four digitally controlled potentiometers in a single package.
The system voltage operates between 2.7V and 5.5V.