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| 型号： | NOII5SM1300A-QDC |
| 厂商： | ON Semiconductor |
| 文件页数： | 14/33页 |
| 文件大小： | 0K |
| 描述： | SENSOR IMAGE MONO CMOS 84-LCC |
| 标准包装： | 1 |
| 象素大小： | 6.7µm x 6.7µm |
| 有源象素阵列： | 1280H x 1024V |
| 每秒帧数： | 27 |
| 电源电压： | 3 V ~ 4.5 V |
| 类型： | CMOS 成像 |
| 封装/外壳： | 84-LCC |
| 供应商设备封装： | 84-LCC（18x18） |
| 包装： | 托盘 |
| 请注意： | * |
| 其它名称： | CYII5SM1300AB-QDC CYII5SM1300AB-QDC-ND |
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a*x + b*x
a*1023 + b*1023 2
NOII5SM1300A
Nonlinear and Linear Conversion Mode—‘gamma’ Correction
Figure 15 shows the ADC transfer characteristic. The nonlinear (exponential) ADC conversion is intended for
gamma-correction of the images. It increases contrast in dark areas and reduces contrast in bright areas. The non-linear transfer
function is given by the following equation:
2
Vin = ADC_VHIGH + ( ADC_VHIGH – ADC_VLOW ) * ???????????????????????????????????????????????
where a = 5; b = 0.027; x = digital output code
Figure 15. Linear and Nonlinear ADC Conversion Characteristics
Sensor Digital Outputs
The digital outputs of the sensor are not designed to drive
large loads. Hence, the outputs cannot be used to directly
drive cables or long traces on the PCB. If it is required to
drive traces more than 5 inches long, it is advisable to use a
buffer for all the digital signals given out by the sensor.
Sensor Clock Inputs
The ADC_CLOCK and the SYS_CLOCK of the sensor
are typically 180 phase shifted from each other. However,
depending on the board layout, it is possible that there may
be a variation (increased phase shift of ADC_CLOCK with
respect to SYS_CLOCK) in the phase shift between the
clocks.
So, it is recommended that the phase shift between the
clocks is maintained programmable.
Clock Jitter Requirements:
Min low time: 11.00 ns
Min high time: 11.00 ns
max rise time: 5 ns
max fall time: 5 ns
Max Duty cycle: 47% to 53%
Max period jitter: 150 ps
It is important that the clock is stable, reproducible and has
low jitter. SYS_CLOCK and ADC_CLOCK are the most
critical clocks, both clock interact in the readout path and
influence the sensor performance.
Black Calibration
Due to slight variations in the chip fabrication process, the
output analog voltage of the PGA is not perfectly matched
to the input analog range of the ADC. As a result, a reduced
dynamic range is compared when comparing
sensors/cameras from different lots. This is especially true
in the dark as it is possible that a part of the analog range gets
clipped when it reaches the ADC.
For this reason, black calibration step is required. Because
this is a fixed setting, and varies very slightly with
temperature, the setting can be done at the factory itself.
While grabbing normal images, the settings can be loaded
from an on-board memory.
In the IBIS5 image sensor, black calibration step also tries
to match the output of the odd and even channels.
The steps for black calibration are -
1. Put the sensor in dark.
2. Change DAC_RAW such that no pixel or least
number of pixels (assuming there are defect
pixels) have a zero ADC output value.
3. Change DAC_FINE such that the average of the
odd columns is almost same as the even columns.
4. Change DAC_RAW again such that all pixels have
a non-zero output, but are as close to zero as
possible.
5. Repeat for different gains.
http://onsemi.com
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| NOIL1SM0300A-QDC | 功能描述:IC IMAGE SENSOR LUPA300 48LLC RoHS:是 类别:传感器，转换器 >> 图像，相机 系列:* 标准包装:480 系列:- 象素大小:6.7µm x 6.7µm 有源象素阵列:768H x 488V 每秒帧数:52 电源电压:3.3V 类型:CMOS 成像 封装/外壳:48-QFP 供应商设备封装:48-QFP 包装:托盘 请注意:* 配用:4H2105-ND - HEADBOARD FOR KAC-004014H2104-ND - KIT EVAL FOR KAC-00401 其它名称:4H20954H2095-NDKAC-00401-CBC-LB-A0 |
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