TCD2560D Datasheet, PDF (5/15 Pages) Toshiba Semiconductor – TOSHIBA CCD Image Sensor CCD (charge coupled device)

TCD2560D
Note 7: V_DRK is defined as average dark signal voltage of all effective pixels.
DSNU is defined as different voltage between V_DRK and V_MDK when V_MDK is maximum dark signal
voltage.
Note 8: DC signal output voltage is defined as follows.
Reset Noise Voltage is defined as follows.
Note 9: Random noise is defined as the standard deviation (sigma) of the output level difference between two
adjacent effective pixels under no illumination (i.e. dark conditions) calculated by the following procedure.
1) Two adjacent pixels (pixel n and n + 1) in one reading are fixed as measurement points.
2) Each of the output level at video output periods averaged over 200ns period to get V (n) and V (n + 1).
3) V (n + 1) is subtracted from V (n) to get DV.
DV = V (n) - V (n + 1)
4) The standard deviation of DV is calculated after procedure 2) and 3) are repeated 30 times (30
readings).
DV
=
1
30
30
Ã¥
i=1
|
DVi |
s=
1
30
30
Ã¥ (|
i=1
DVi
|
-
DV
)²
5) Procedure 2), 3) and 4) are repeated 10 times to get sigma value.
6) 10 sigma values are averaged.
s
=
1
10
10
Ã¥
j=1
sj
5
2002-12-25