mlx90255-bc Melexis Company, mlx90255-bc Datasheet - Page 4

• Manufacturer Part Number: mlx90255-bc
• Description: Linear Optical Array
• Manufacturer: Melexis Company

MLX90255BC Electrical specifications
All tests are made with 0.7ms integration time at 25°C at 880nm and with a clock speed of 500kHz in,
250kHz out, and 500kHz, unless otherwise specified in the Test Conditions. 100% light under Test
Conditions means that the light is set in such a way that there is 2.4V at the output of the chip.
Parameter
(0) After power on, the first integration scan is not guaranteed correct. This scan is needed for initializing digital levels on chip. After a SI and 133 proper
CLK signals, the system is fully initialized and all further scans are valid. The next SI will provide a valid scan.
(1) Absolute Light measurements are very test-setup dependent and should be regarded with caution. Relative measurements are possible with ±1%
accuracy.
(2) PRNU is defined as the worst case deviation of any PixelValue (pixel 3 till 130) to the average light value. PixelValue = (Vout of a pixel at 100% light
– Vout of same pixel at 0% light) The MLX90255BC has a cosine shaped gain: external pixels have 15% more gain than middle pixels.
(3) PIT = (Vout of pixel 132 @ 10µW – Vout of pixel 132 @0µW) / (Vaverage @10µW – Vaverage @10µW)
(4) Noise: We compare 5 different measurements, normalize them and then take the RMS value.
(5) Array Lag is defined as: (Vaverage 0µW1 Vaverage 0µW2) / ((Vaverage 10µW Vaverage 0µW2). Where 0µW1 is a 0% light level, 1ms after a 100%
light level. (there can still be some light effects). 0µW2 is a 0% light level, 10ms after a 100% light level, which should be a true dark reference.
(6) DSNU is defined as: (max Vout of pixel I @ 0% light) - (min Vout of pixel j @ 0% light) for pixels 3 thru 130
(7) Sensitivity always increases with rising temperature.
(8) Idd is measured with Rload disconnected from the output pin.
390109025503
Rev. 001
Symbol
Test Conditions
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MLX90255-BC
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Linear Optical Array
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Units
Nov/05