The AD5228 is a 32-position manual up/down control potentiometer with 10 kΩ, 50 kΩ, 100 kΩ end-to-end terminal resistance, simple manual up/down control, self-contained, requires only 2 pushbutton tactile switches, built-in adaptive debouncer, discrete step-up/step-down control, autoscan up/down control with 4 steps per second, pin-selectable zero-scale/midscale preset, low potentiometer mode tempco, 5 ppm/°C, low rheostat mode tempco, 35 ppm/°C, digital control compatible, ultralow power, IDD = 0.4 µA typ and 3 µA max, low operating voltage, 2.7 V to 5.5 V, automotive temperature range, −40°C to +105°C, compact thin SOT-23-8 (2.9 mm × 3 mm) Pb-free package, suitable for mechanical potentiometer and trimmer replacements, LCD backlight, contrast and brightness controls, digital volume control, portable device-level adjusters, etc.
The AD5228 digital potentiometer provides 32 discrete steps with simple up/down control using two tactile push‑buttons. It features an adaptive debouncer, autoscan mode, and pin‑selectable zero‑scale or mid‑scale presets, making it suitable for replacing mechanical potentiometers in LCD backlight, volume, and other applications.
Its compact SOT‑23‑8 package operates from 2.7 V to 5.5 V, consumes as little as 0.4 pA typical standby current, and is rated for –40 °C to +105 °C, meeting automotive specifications. Electrical characteristics, timing diagrams, and pin functions are detailed for designers.
| Number of positions | 32 |
|---|---|
| Resolution | 5 bits |
| Operating voltage range | 2.7 V to 5.5 V |
| Temperature range | ‑40 °C to +105 °C |
The AD5228 provides 32 discrete steps.
It operates from 2.7 V to 5.5 V.
It is rated for –40 °C to +105 °C.
The device has a 5‑bit resolution.