This document describes the features of the X9428 low noise/low power/2-wire bus single digitally controlled potentiometer (XDCP). The product features a solid state potentiometer, 2-wire serial interface, register oriented format, and is ideal for low power applications.
The X9428 is a single‑digitally controlled potentiometer (XDCP) that integrates a 10 kΩ resistor array, four non‑volatile data registers and a 6‑bit volatile wiper counter register. It operates over a 2‑wire serial interface (SCL/SDA) and supports up to eight devices on the bus.
Key features include low standby current (< 1 pA), high endurance (100 k data changes per bit), 100‑year data retention, and selectable supply voltages from 2.7 V to 5.5 V (including negative V‑). The device is offered in 16‑lead DIP, 16‑lead SOIC and 14‑lead TSSOP packages and is rated for commercial (0 °C to +70 °C) and industrial (‑40 °C to +85 °C) temperature ranges.
| Standby current | < 1 pA |
|---|---|
| Resolution | 64 taps per potentiometer |
| Non‑volatile memory | 4 bytes |
| Supply voltage (VEE) | 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 |
| Endurance | 100 000 data changes per bit per register |
| Data retention | 100 years |
| Maximum bus devices | 8 |
| Package options | 16‑lead DIP, 16‑lead SOIC, 14‑lead TSSOP |
| Temperature range | Commercial 0 °C to +70 °C; Industrial ‑40 °C to +85 °C |
The standby current is less than 1 pA.
It provides 64 taps per potentiometer.
Up to eight devices can be connected on the bus.
VEE, V+ operate from 2.7 V to 5.5 V and V‑ from –2.7 V to –5.5 V.