MLX75306 rd 3 Generation Linear Optical Array General Description rd The MLX75306 is the Melexis 3 generation automotive linear optical sensor array, including a 142 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 100m (H) by 47m (W) with a 50m pixel-to-pixel pitch, leading to a total of 7.1mm optical sensing array. Operation is simplified by internal control logic only requiring upload of commands via the SPI interface including a high speed on-chip ADC. Features and Benefits 142 customer pixels, 100m height, 50m pitch. Total array length: 7.1mm Flat pixel response under uniform light SPI control: MOSI/MISO/CS/SCLK Internal ADC with selectable 8 bit and 4bit high speed readout 2 bit output (1.5 bit content) based on two programmable 4-bit thresholds 1 bit output based on programmable 4-bit threshold Read-out speed up to 12MHz SPI based easy programmable upload & download features: readout direction, selectable region of in- terest, multiple automotive test modes, integrity checks 16 bit Integration Time in two ranges: 10s .. 94.4ms range possible Integrated Temperature Sensor Max. +/- 12% Pixel to Pixel Difference (Note that 4 bit gives a 6.25% step) 3.3V operation Package: SO16 narrow body cavity package technology Devices available for both automotive and consumer markets - see Ordering Information Ordering Code Product Code Temperature Code Package Code Option Code Packing Form Code MLX75306 K XZ BAA-000 RE MLX75306 K XZ BAA-000 TU Legend: Temperature Code: K for Temperature Range -40C to 125C Package Code: XZ for SOIC16 Option Code: AAA-xxx: Die version xxx-000: Standard version Packing Form: RE for Reel, TU for Tube Ordering example: MLX75306KXZ-BAA-000-RE 390107530601 Page 1 of 27 Data Sheet Rev. 003 Aug/12 MLX75306 rd 3 Generation Linear Optical Array 1 Functional Diagram 5 - V3v3 6 - V3v3 Simultaneous Pixel Array Integration of AD conversion 1+142+1 Pixels Pixels + Analog 4 - Vss Busswitch + MUX Voltage Zebra Test Temperature References Pattern Sensor Generator POR 16-bit CRC Generator Integration Timer 16-bit 1 - SCLK 8-bit Frame 2 - MISO Counter SPI + 3 - MOSI Steering logic Integration 7 - FrameReady RC Oscillator Time Typ. 10MHz Test Controller 8 - CS (set via SPI ) 2 General Description rd The 3 generation linear sensor array consists of a 142 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 100m (H) by 47m (W) with a 50m pixel-to-pixel pitch. Operation is simplified due to internal control logic that only requires the upload of commands via the SPI interface. The sensor consists of 142 photodiodes arranged in a linear array. Light energy falling on a photodiode generates photocurrent, which is integrated by the active integration circuitry associated with each pixel. During the integration period, a sampling capacitor connects to the output of the integrator through an analogue switch. The amount of charge accumulated at each pixel is directly proportional to the light intensity and the integration time. During the read-back period, the charge stored on the sampling capacitors is sequentially connected to a charge-coupled output amplifier that generates a voltage. That voltage is converted to a digital value which results in a digital output stream representing the light intensity. The digital output stream has some additional control bytes, integrity checks and also a temperature byte. 390107530601 Page 2 of 27 Data Sheet Rev. 003 Aug/12