upd8874 Renesas Electronics Corporation., upd8874 Datasheet - Page 23

• Manufacturer Part Number: upd8874
• Description: 5400 + 5400 Pixels 3 + Color Ccd Linear Image Sensor
• Manufacturer: Renesas Electronics Corporation.

12. Light shielding random noise: σ dark
Light shielding random noise σ dark is defined as the standard deviation of a valid pixel output signal with 100
times (= 100 lines) data sampling at dark (light shielding).
Remark
σ (mV) =
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double
Sampling)
Vi : A valid pixel output signal among all of the valid pixels for each
V
OUT
100
Σ
i=1
100
(Vi – V)
2
,
Data Sheet S18773EJ1V0DS
V =
V
V
V
100
100
1
2
1
100
Σ
i=1
Vi
line1
line2
line100
μ
PD8874
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