This document describes the features and benefits of the MLX90255BA linear optical array, including 128 x 1 sensor-element organization, high linearity and uniformity, high sensitivity, special gain compensation, low image lag, etc.
The MLX90255BA is a 128 × 1 linear optical sensor array designed for position sensing, OCR, barcode reading, and optical encoding applications. It integrates a charge‑coupled amplifier and shift‑register logic, requiring only a serial input and clock signal.
Key specifications include a 385 DPI sensor pitch, 5 V supply range, up to 1 MHz clock speed, and operation from –40 °C to 125 °C. The device is offered in LA (SMD8) and JA (GLP5) packages with detailed pin assignments and leadframe drawings.
| Sensor pitch | 385 DPI |
|---|---|
| Supply voltage (Vdd) | 4.5 V to 5.5 V |
| Clock frequency | 64 kHz to 1024 kHz |
| Sensor integration time | 0.125 ms to 100 ms |
| Supply current (Idd) | 2 mA to 8 mA |
| Operating temperature range | -40 °C to 125 °C |
The device operates with a supply voltage (Vdd) between 4.5 V and 5.5 V.
The array consists of 128 active photodiodes arranged in a 128 × 1 line, plus dummy and dark pixels.
The MLX90255BA can be clocked up to 1 MHz (specified as 1024 kHz).
The device is rated for operation from –40 °C to 125 °C.