The X9429 is a low noise, low power, 2-wire bus single digitally controlled potentiometer (XDCP™). The potentiometer uses 64 resistive elements in a series array and has a 2-wire serial interface for write, read, and transfer operations.
The X9429 integrates a single digitally controlled potentiometer (XDCP) on a monolithic CMOS IC. It offers 64 resistor taps, a 2‑wire serial interface for read/write operations, low standby current, and non‑volatile storage of wiper positions with power‑on recall. Typical wiper resistance is 150 Ω at 5 V and the device operates from 2.7 V to 5.5 V.
The part is supplied in 14‑lead TSSOP and 16‑lead SOIC packages and is suited for applications such as gain control, reference voltage generation, LCD contrast adjustment, LED driver biasing, sensor conditioning, and other programmable resistance needs. Intersil provides full pin‑out, functional diagrams, and instruction sets for easy integration.
| Resistor taps | 64 |
|---|---|
| Wiper resistance | 150 Ω typical at 5V |
| Standby current | < 5A Max |
| Operating voltage (Voc) | 2.7V to 5.5V |
| Total pot resistance | 2.5kΩ, 10kΩ |
| Endurance | 100,000 data changes per bit per register |
| Data retention | 100 years |
| Package types | 14‑lead TSSOP, 16‑lead SOIC |
| Non‑volatile data registers | 4 |
| Wiper Counter Register bits | 6 bits |
The X9429 operates from 2.7 V to 5.5 V.
It provides 64 resistor taps.
The device contains four non‑volatile data registers.
The standby current is less than 5 A (max).