X9418 is a low noise/low power/2-wire bus dual digitally controlled potentiometers (XDCP™).
The X9418 integrates two digitally controlled potentiometers (XDCP) on a monolithic CMOS microcircuit. It features a 2‑wire serial interface, 8 bytes of non‑volatile memory, low standby current, and can store up to four wiper positions per potentiometer. The device operates from 2.7 V to 5.5 V (or ±2.7 V to ±5.5 V) and is suitable for battery‑operated applications.
The datasheet lists ordering information for DIP, TSSOP and SOIC packages, pin configurations, serial interface timing, instruction set, and mechanical dimensions. It also describes the register architecture, address handling, and ACK polling for non‑volatile write cycles.
| Supply voltage (Voc) | 2.7 V to 5.5 V |
|---|---|
| Supply voltage (V+) | 2.7 V to 5.5 V |
| Supply voltage (V‑) | -2.7 V to -5.5 V |
| Standby current | < 1 pA |
| Endurance (data changes per bit) | 100,000 |
| Data register retention | 100 years |
| Non‑volatile memory size | 8 bytes |
| Maximum devices on bus | 16 |
| Resistive elements per array | 63 |
| Wiper positions per potentiometer | 64 |
The device operates from 2.7 V to 5.5 V (V+), with a system supply (Voc) of 2.7 V to 5.5 V and a negative supply (V‑) of –2.7 V to –5.5 V.
Up to 16 devices can be connected to the same 2‑wire serial bus.
The standby current is less than 1 picoampere.
The X9418 provides 8 bytes of non‑volatile memory.