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EVB90255 General Description

The MLX90255xx linear sensor array consists of a 128 x 1 array of photodiodes, associated charge amplifier circuitry and a pixel data-hold function that provides simultaneous integration start and stop times for all pixels. The pixels measure 200µm (H) by 66 µm (W) and there is 8 µm spacing between pixels. Operation is simplified by internal control logic that requires only a Serial Input (SI) pulse and a clock signal. The sensor consists of 128 photodiodes arranged in a linear array. Light energy falling on a photodiode generates photocurrent, which is integrated by the active integration circuitry associated with that pixel. During the integration period, a sampling capacitor connects to the output of the integrator through an analog switch. The amount of charge accumulated at each pixel is directly proportional to the light intensity and the integration time. The output and reset of the integrators is controlled by a 132-bit shift register and reset logic. An output cycle is initiated by clocking in a logic 1 on SI. This causes all 132 sampling capacitors to be disconnected from their respective integrators and starts an integrator-reset period.

EVB90255 Features and Benefits

128 x 1 Sensor-Element Organization (1 Not Connected, 1 dummy, 128 real, 1 dummy, 1 Dark Pixel)
385 DPI sensor pitch
High Linearity and Uniformity for 256 Gray-Scale
High Sensitivity: 1.7V @ 10µW/cm 2 @ 0.7ms integration time
Special Gain Compensation for use with single LED light source
Output Referenced to Ground
Single 5V Supply
Operation to 500kHz (BA) or 800kHz (BC)

EVB90255 Related Products

MLX90255BC

Linear Optical Array

MLX90255BA

Linear Optical Array

Melexis Products

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Annual Report 2011
English | Nederlands

EVB90255 Evaluation Board for the MLX90255

Download EVB90255 Datasheet (PDF)

EVB90255 General Description

EVB90255 Features and Benefits

EVB90255 Related Products

EVB90255 Applications

EVB90255 Documentation

EVB90255 Tools

EVB90255 Environmental Information

EVB90255 In The Press

Related Melexis News

EVB90255 Frequently asked Questions

Buy EVB90255

Melexis Products

Melexis Members

Download Melexis Annual Report 2011 English | Nederlands

EVB90255 Evaluation Board for the MLX90255

Download EVB90255 Datasheet (PDF)

EVB90255 General Description

EVB90255 Features and Benefits

EVB90255 Related Products

EVB90255 Applications

EVB90255 Documentation

EVB90255 Tools

EVB90255 Environmental Information

EVB90255 In The Press

Related Melexis News

EVB90255 Frequently asked Questions

Buy EVB90255

Download Melexis
Annual Report 2011
English | Nederlands