AR0331
17
PIXEL SENSITIVITY
Figure 15. Integration Control in ERS Readout
Row Reset
(Start of Integration)
Row Readout
Row Integration
(T
INTEGRATION
)
A pixel’s integration time is defined by the number of
clock periods between a row’s reset and read operation. Both
the read followed by the reset operations occur within a row
period (T
ROW
) where the read and reset may be applied to
different rows. The read and reset operations will be applied
to the rows of the pixel array in a consecutive order.
The coarse integration time is defined by the number of
row periods (T
ROW
) between a row’s reset and the row read.
The row period is defined as the time between row read
operations (see Sensor Frame Rate).
T
COARSE
+
T
ROW
coarse_integration_time
(eq. 1)
Figure 16. Example of 8.33 ms Integration in 16.6 ms Frame
Vertical Blanking
Read
Reset
Vertical Blanking
Horizontal Blanking
T
COARSE
= coarse_integration_time x T
ROW
8.33 ms = 563 rows x 22.2
μ
s/row
T
FRAME
= frame_length_lines x T
ROW
16.6 ms = 750 rows x 22.22
μ
s/row
