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AR0330 数据表(PDF) 44 Page - ON Semiconductor

部件名 AR0330
功能描述  CMOS Digital Image Sensor
PDF  77 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

AR0330 数据表(HTML) 44 Page - ON Semiconductor

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AR0330_DS Rev. U Pub. 4/15 EN
44
©Semiconductor Components Industries, LLC,2015.
AR0330: 1/3-Inch CMOS Digital Image Sensor
Gain Stages
Gain Stages
The analog gain stages of the AR0330 sensor are shown in Figure 30. The sensor analog
gain stage consists of column amplifiers and a variable ADC reference. The sensor will
apply the same analog gain to each color channel. Digital gain can be configured to
separate levels for each color channel.
Figure 30:
Gain Stages in AR0330 Sensor
The level of analog gain applied is controlled by the coarse_gain and fine_gain registers.
The analog readout can be configured differently for each gain level. The recommended
gain tables are listed in Table 32. It is recommended that these registers are configured
before streaming images.
Table 32:
Recommended Sensor Analog Gain Tables
COARSE_GAIN
FINE_GAIN
Total Gain
COARSE_GAIN
FINE_GAIN
Total Gain
R0x3060[
5:4]
Gain
(x)
R0x3060
[3:0]
Gain
(x)
(x)
(dB)
R0x3060[
5:4]
Gain
(x)
R0x3060
[3:0]
Gain
(x)
(x)
(dB)
0
1
0
1.00
1.00
0.00
0
1x
15
1.88
1.88
5.49
0
1
1
1.03
1.03
0.26
1
2x
0
1.00
2.00
6.00
0
1
2
1.07
1.07
0.56
1
2x
2
1.07
2.13
6.58
0
1
3
1.10
1.10
0.86
1
2x
4
1.14
2.29
7.18
0
1
4
1.14
1.14
1.16
1
2x
6
1.23
2.46
7.82
0
1
5
1.19
1.19
1.46
1
2x
8
1.33
2.67
8.52
0
1
6
1.23
1.23
1.80
1
2x
10
1.45
2.91
9.28
0
1
7
1.28
1.28
2.14
1
2x
12
1.60
3.20
10.10
0
1
8
1.33
1.33
2.50
1
2x
14
1.78
3.56
11.02
0
1
9
1.39
1.39
2.87
2
4x
0
1.00
4.00
12.00
0
1
10
1.45
1.45
3.25
2
4x
4
1.14
4.57
13.20
0
1
11
1.52
1.52
3.66
2
4x
8
1.33
5.33
14.54
0
1
12
1.60
1.60
4.08
2
4x
12
1.60
6.40
16.12
0
1
13
1.68
1.68
4.53
3
8x
0
1.00
8.00
18.00
0
1
14
1.78
1.78
5.00
ADC
Reference
Digital Gain
with Dithering
Coarse Gain:
1x, 2x, 4x, 8x
Fine Gain:
1-2x: 16 steps
2-4x: 8 steps
4-8x: 4 steps
1x to 15.992x
(128 steps per 6dB)
“xxxx.Yyyy”
xxxx(15-0)
yyyyyyy( 127/128 to 0)



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