S11454EJ3V0DS00_15 Datasheet, PDF (14/22 Pages) Renesas Technology Corp – 2660 PIXELS CCD LINEAR IMAGE SENSOR

μ PD3734A
11. Random noise: σ
Random noise σ is defined as the standard deviation of a valid photocell output signal with 100 times (= 100 lines)
data sampling at dark (light shielding).
σ (mV) =
100
∑ (Vi – V)²
i=1
100
∑ ^{1 100}
,
V
=
100
i
Vi
=1
Vi : A valid pixel output signal among all of the valid photocells
VOUT
V1
line 1
V2
line 2
V100
line 100
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
12
Data Sheet S11454EJ3V0DS