mt9v011ia9stces aptina, mt9v011ia9stces Datasheet - Page 20

• Manufacturer Part Number: mt9v011ia9stces
• Description: Mt9v011 1/4-inch Vga Digital Image Sensor
• Manufacturer: aptina

Recommdended Gain Settings
Table 7:
PDF:0560901182/Source 6061803135
MT9V011_IBGA_DS - Rev. C 6/10 EN
8.000 to 15.875
1.000 to 1.969
2.000 to 7.938
desired gain
Recommended Gain Settings
The gains for green1, blue, red, and green2 pixels are set by registers Reg0x2B, Reg0x2C,
Reg0x2D, and Reg0x2D, respectively. Gain can also be set globally by Reg0x35. The
analog gain is set by bits[8:0] of the corresponding register as following:
Gain = (Bit[8] + 1) x (Bit[7] + 1) x (Bit[6:0]/32)
Digital gain is set by bits 9 and 10 of the same registers.
The analog gain circuitry (pre-ADC) is designed to offer signal gains from 1 to 15.875.
The minimum gain of 1 (register set to 0x0020) corresponds to the lowest setting where
the pixel signal is guaranteed to saturate the ADC under all specified operating condi-
tions. Any reduction of the gain below this value may cause the sensor to saturate at ADC
output values less than the maximum, under certain conditions. It is recommended that
this guideline be followed at all times.
Since bits 7 and 8 of the gain registers are multiplicative factors for the gain settings,
there are alternative ways of achieving certain gains. Some settings offer superior noise
performance to others, while the same overall gain. Table 7 lists the recommended gain
settings.
Recommended Settings (Gain Registers)
0x0020 to 0x003F
0x01C0 to 0x01FF
0x00A0 to 0x00FF
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MT9V011 1/4-INCH VGA DIGITAL IMAGE SENSOR
Aptina eserves the right to change products or specifications without notice.
Conversion formula (arithmetic)
(Register value - 128)/16
(Register value - 384)/8
(Register value)/32
©2009 Aptina Imaging Corporation All rights reserved.
Preliminary