The document introduces a product called X9261, which is a single supply/low power/256-tap/SPI bus dual digitally-controlled potentiometer. The product features dual separate potentiometers, 256 resistor taps, SPI serial interface, single supply operation, and nonvolatile storage, etc.
The X9261 integrates two digitally‑controlled potentiometers on a single CMOS IC. Each potentiometer provides 256 resistor taps with 0.4 % resolution, a typical wiper resistance of 100 Ω at 5 V, and four non‑volatile data registers for storing wiper positions. The device operates from a single supply, supports a low‑power mode, and retains data for up to 100 years.
The part is accessed via an SPI serial interface and includes pins for address selection, chip‑select, hold, and hardware write‑protect. It is offered in 24‑lead SOIC and 24‑lead TSSOP packages and is suitable for applications such as audio volume control, sensor calibration, and voltage reference trimming.
| Resistor taps per potentiometer | 256 |
|---|---|
| Wiper resistance (typical) | 100 Ω @ Vcc=5 V |
| Standby current | < 5 µA (max) |
| Data retention | 100 years |
| Endurance (data changes per bit) | 100,000 per register |
| Package types | 24‑lead SOIC, 24‑lead TSSOP |
| Supply voltage | Single supply, low power |
The X9261 uses an SPI serial interface for write, read, and transfer operations.
Each potentiometer has four non‑volatile data registers.
The standby current is less than 5 µA (max).
Each potentiometer provides 256 resistor taps.