This document introduces the LSH3004-AA20A contact image sensor head produced by ROHM Co., Ltd., which is compatible with narrow-width scanners. The product features a dual-arch structure, allowing straight-pass reading in both directions. Additionally, it is compact, measuring only 119.5mm in length.
The LSH3004-AA20A is a contact image sensor designed for narrow‑width scanners such as check readers and card scanners. It features an integrated signal amplifier, on‑chip LED light source, proprietary prism, and a ceramic substrate for stability, all within a compact 119.5 mm length.
The data sheet lists detailed electrical characteristics, pin functions, timing charts, and circuit diagrams, along with legal notices and usage guidelines for designers integrating the sensor into electronic equipment.
| Effective scanning width | 104.9 mm |
|---|---|
| Primary scan dot density | 300 dpi |
| Total dot number | 1296 dots |
| Power supply voltage | 3.3 V |
| Scanning speed | 0.28×3 ms/line |
| Clock frequency | 5 MHz |
| Maximum dynamic range | 0.5 V |
| Minimum dynamic range | 0.25 V |
| Dark output | 0.84‑0.2 V |
| Operating temperature | -5 to 45 °C |
The effective scanning width is 104.9 mm.
Pin 1 is the Clock (CLK) signal.
It requires a 3.3 V power supply.
It is suitable for check readers, card scanners, and other image input devices.