The X9258 is a low noise/low power/2-wire bus/256 taps quad digital controlled potentiometers. It features four potentiometers in one package, 256 resistor taps/pot with 0.4% resolution, a 2-wire serial interface, 40Ω wiper resistance, four nonvolatile data registers for each pot, nonvolatile storage of wiper position, standby current less than 5µA, and power supplies ranging from VCC = 2.7V to 5.5V, V+ = 2.7V to 5.5V, and V- = -2.7V to -5.5V.
The X9258 integrates four digitally controlled potentiometers (XDCP) on a single CMOS IC. Each pot provides 256 resistor taps with 0.4 % resolution and can be operated as a three‑terminal potentiometer or a two‑terminal variable resistor via a 2‑wire serial bus (SCL/SDA).
Key features include a typical wiper resistance of 40 Ω at ±5 V, standby current below 5 µA, supply voltage ranges of 2.7 V to 5.5 V, and robust data retention of 100 years. The device offers non‑volatile registers, 100 kΩ total resistance, and endurance of 100 k data changes per bit per register.
| Number of potentiometers | 4 |
|---|---|
| Resistor taps per potentiometer | 256 |
| Serial interface | 2‑wire (SCL, SDA) |
| Wiper resistance (typical) | 40 Ω @ V+ = 5 V, V‑ = -5 V |
| Standby current (max) | <5 µA |
| Supply voltage range (Voc) | 2.7 V to 5.5 V |
| Total pot resistance | 100 kΩ (50 kΩ per pot) |
| Data retention | 100 years |
It uses a 2‑wire serial interface (SCL and SDA).
The device contains four digitally controlled potentiometers.
The standby current is less than 5 µA for the whole package.
Typical wiper resistance is 40 Ω when V+ = 5 V and V‑ = -5 V.