The Honeywell HOA0902 is a dual‑channel reflective optical encoder detector with 0.457 mm resolution, integrated temperature compensation and TTL‑compatible…
The HOA0902 combines a dual‑channel integrated‑circuit detector and an infrared LED in a compact black plastic housing. It offers a resolution of 0.457 mm, a 3.2 mm slot width, integrated temperature compensation and direct TTL‑level interfaces for both speed and direction outputs. Typical applications include linear displacement encoders, rotary encoders and optical mouse encoding functions, where the sensor is paired with a mask bar or a code disc to measure motion speed and direction. This manual is written in Chinese.
| Resolution | 0.457 mm |
|---|---|
| Slot width | 3.2 mm |
| Output interface | TTL compatible |
| Temperature compensation | Integrated |
It provides two TTL‑compatible outputs: a speed pulse output and a direction output that can directly drive TTL loads.
Typical applications include linear displacement encoders, rotary encoders and optical mouse encoding functions.
The direction output goes high or low depending on which photodiode channel is illuminated first, indicating the direction of motion.