The X9259 is a monolithic CMOS integrated circuit that integrates four digitally controlled potentiometers (XDCP). It features 256 resistor taps, a 2-wire serial interface, and can be used in a wide range of applications including control, parameter adjustments, and signal processing.
The X9259 is a CMOS integrated circuit that contains four quad digitally‑controlled potentiometers (XDCP). Each potentiometer offers 256 resistor taps with 0.4 % resolution and can be used as a three‑terminal potentiometer or a two‑terminal variable resistor. The device is controlled via a 2‑wire serial bus, providing read/write access to volatile wiper counters and four non‑volatile data registers per potentiometer.
The datasheet includes ordering information, application examples for circuit‑level and system‑level use, detailed pin configurations, operation principles, the serial interface protocol, instruction set details, and mechanical package dimensions for SOIC and TSSOP variants.
| Resistor Taps | 256 taps (0.4 % resolution) |
|---|---|
| Wiper Resistance | 100 Ω typical @ Vcc = 5 V |
| Standby Current | <5 µA |
| Operating Voltage (Vcc) | 2.7 V to 5.5 V |
| Total Resistance Options | 50 kΩ, 100 kΩ |
| Endurance | 100,000 data changes per bit per register |
| Data Retention | 100 years |
Four separate potentiometers are integrated in one package.
It operates from 2.7 V to 5.5 V.
The standby current is less than 5 µA.
Typical wiper resistance is 100 Ω at Vcc = 5 V.