The X9271 is a single supply low power 256 tap SPI bus single digitally controlled (XDCP™) potentiometer from Intersil. It features 256 resistor taps, SPI serial interface, 100 ohm typical wiper resistance, 16 nonvolatile data registers, multiple wiper position nonvolatile storage, power-on recall, loads saved wiper position on power-up, less than 3 microamp standby current, 2.7 to 5.5 volt operation, 50 kiloohm, 100 kiloohm versions of end to end resistance, 100 years data retention, 100,000 data changes per bit per register endurance, 14 lead TSSOP package, low power CMOS, lead free and anneal available (RoHS compliant).
The Intersil X9271 integrates a digitally‑controlled potentiometer (XDCP) on a monolithic CMOS IC. It offers 256 resistor taps, SPI serial communication, and non‑volatile storage of wiper positions.
The device is supplied in a 14‑lead TSSOP package, operates from 2.7 V to 5.5 V, and provides features such as power‑on recall, standby current below 3 µA, and up to 100 years of data retention.
| Resistor taps | 256 |
|---|---|
| Wiper resistance (typical) | 100 Ω @ Vcc=5 V |
| Supply voltage (Vcc) | 2.7 V to 5.5 V |
| Standby current | < 3 µA max |
| Data retention | 100 years |
| Endurance (data changes) | 100 000 per bit |
| Package type | 14‑lead TSSOP |
| Non‑volatile data registers | 4 (16 bytes total) |
| Operating temperature range | -40 °C to +85 °C |
The X9271 uses an SPI serial interface for read, write, and transfer operations.
The device provides 256 resistor taps.
The standby current is less than 3 µA (max).
It is offered in a 14‑lead TSSOP package.