Datasheet

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color CMOS QSXGA (5 megapixel) image sensor with OmniBSI™ technology
OV5647
proprietary to OmniVision Technologies PRELIMINARY SPECIFICATION version 1.0
3.2 binning
The OV5647 supports 2x2 binning for better SNR in low light conditions. See table 3-1 for horizontal and vertical binning
registers.
Sub-sampling is necessary when using binning.
Sensor timing adjustment is necessary after applying binning. Please consult your local OmniVision FAE for details.
figure 3-2 example of 2x2 binning
3.3 analog amplifier
When the column sample/hold circuit has sampled one row of pixels, the pixel data will shift out one-by-one into an
analog amplifier.
3.4 10-bit A/D converters
The balanced signal is then digitized by the on-chip 10-bit ADC. It can operate at up to 27 MHz and is fully synchronous
to the pixel clock. The actual conversion rate is determined by the frame rate.
table 3-1 horizontal and vertical binning registers
address register name
default
value R/W description
0x3820 TIMING_TC_REG20 0x40 RW
Bit[0]: Vertical binning
0: Disable
1: Enable
0x3821 TIMING_TC_REG21 0x00 RW
Bit[0]: Horizontal binning
0: Disable
1: Enable
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
B G
G R
5647_DS_3_2