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MLX90255KUC-BAM 参数 Datasheet PDF下载

MLX90255KUC-BAM图片预览
型号: MLX90255KUC-BAM
PDF下载: 下载PDF文件 查看货源
内容描述: 线性光学阵列 [Linear Optical Array]
分类和应用:
文件页数/大小: 12 页 / 424 K
品牌: MELEXIS [ Melexis Microelectronic Systems ]
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MLX90255-BA  
Linear Optical Array  
optical linear and rotary encoding. The  
MLX90255BA is a replacement for the Texas  
Instruments' TSL1301 and TSL1401 parts.  
4. General Description  
(continued from page 1)  
This causes all 132 sampling capacitors to be  
disconnected from their respective integrators  
and starts an integrator reset period. As the SI  
pulse is clocked through the shift register, the  
charge stored on the sampling capacitors is  
sequentially connected to a charge-coupled  
output amplifier that generates a voltage on the  
analog output AO. Two dummy pixel values are  
shifted out first, then the 128 actual pixel bits,  
followed by two additional dummy pixel bits, for  
a total of 132 data bits. Although there are only  
132 pixels, 133 clock pulses are necessary for a  
complete shift out. The final pulse is used to re-  
initialize the shift register.  
5. Absolute Maximum Ratings  
SupplyꢀVoltage,ꢀVddꢀ  
+7Vꢀ  
DigitalꢀInputꢀCurrentꢀRangeꢀ  
ꢁ20ꢀtoꢀ20ꢀmAꢀ  
OperatingꢀFreeꢁAirꢀtemperatureꢀ ꢁ40°Cꢀtoꢀ125°Cꢀ  
range,ꢀTaꢀ  
(automotiveꢀcompliantꢀ  
opticalꢀpackage)ꢀ  
Storageꢀtemperatureꢀrange,ꢀ  
Tstgꢀ  
ꢁ40°Cꢀtoꢀ125°Cꢀ  
ESDꢀSensitivityꢀ(HumanꢀBodyꢀ  
ModelꢀaccordingꢀtoꢀCDFꢁAECꢁ  
Q100ꢁ002)ꢀ  
2kVꢀ  
The integrator reset period ends 18 clock cycles  
after the SI pulse is clocked in. So the light-  
integration starts after the 18th CLK pulse. The  
light-integration ends at the next SI pulse.  
Between the end of the 133th clock pulse and the  
next SI pulse, a minimum time of 10µs is  
necessary for an effective S&H function. So the  
minimum integration time of the MLX90255BA is  
(133 -18) * Ts + 10µs and thus dependent on  
clock speed. (Ts = clock period) After the 132  
data bits are clocked out, the output becomes  
high impedance. (see figure) The AO is driven  
by a source follower that requires an external  
pulldown resistor. (typically 330Ω) The output is  
nominally 125mV for no light input and 2.4V for a  
nominal full-scale output. The pixel gain is 15%  
bigger at the edges than in the middle (cosine  
correction) in order to get a flat output when  
illuminating the device with a single LED light  
source (see also Section 6).  
Stresses beyond those listed under "absolute  
maximum ratings" may cause permanent  
damage to the device.  
These are stress ratings only, and functional  
operation of the device at these or any other  
conditions beyond those indicated under  
"recommended operating conditions" is not  
implied.  
Exposure  
to  
absolute-maximum  
-rated  
conditions for extended periods may affect  
device reliability.  
The MLX90255BA is intended for use in a wide  
variety of applications, including: image  
scanning, mark and code reading, optical  
character recognition (OCR) and contact  
imaging, edge detection and positioning, and  
390109025502  
Rev. 008  
Page 5 of 12  
Nov/05