(1) Reset until clock pulse 18 (on declining flank).
Minimum integration time = (133-18) * CLK period + 10µs (this is the time the S&H cap needs to follow).
At 500kHz clock speed, the minimum integration time becomes 0.240ms.
(2) At 125°C, the integration time should be limited to 2ms.
(3) The SI pulse must go low before the rising edge of the next clock pulse.
390109025502
Rev. 008
Page 3 of 12
Nov/05
MLX90255-BA
Linear Optical Array
MLX90255BA 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
Symbol Test Conditions
Min
Typ
Max
Units
Sensitivity for devices with glas lid Sensitivity At 25°C
Sensitvity for open devices
Polyimide Wafer
Illumination (1)
Average analog output (1)
Average analog output
Average analog output
Highest Dark Pixel
Non Linearity
Pixel Response Non Uniformity (2)
Pixel Interaction Test (3)
Noise Level (4)
Hold spec, same as PRNU
Output Settling Time
Array Lag (5)
Dark Signal Non Uniformity (6)
Analog Output Saturation
Change in sensitivity with
Temperature at 880nm (7)
Operating Free Temp
Supply Current (8)
Idd
-40
2
5
Illum100
At 25°C, 2.4V at output
0.135
0.14
0.14
0.151
0.16
0.176
14
2.4
0
0
0.15
0.40
0.3
1.4
0.8
±0.5%
±4.0%
5%
3
±4.0%
450
0.5%
80
140
3.0
0.3
125
8
120
440
6
±8.5%
750
±1.2%
±8.5%
0.179
0.19
0.21
W/cm²
V
V
V
V
FS
FS
FS
mV (RMS)
FS
ns
FS
mV
mV
V
%/°C
°C
mA
V/ W/
cm2
VaoLight At 25°C, 100% light
Initial offset At 25°C, 0% light
VaoDark At 125°C, 0% light
Vaodarkmax At 125°C, 0.25ms integration time
Nlao1
PRNU
PIT
Vn
PRNUH
Ts
Alag
DSNU
All Temp
All Temp, 100% light
AT 25°C
All Temp
All Temp, 100% light, 62.5kHz
All Temp
At 25°C
At 25°C
At 125°C
All Temp
(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 MLX90255BA has a cosine shaped gain: external pixels have 15% more gain than middle pixels.
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