UPD8821 Datasheet, PDF (15/24 Pages) NEC – 7300 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR

μ PD8821
10. 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).
σ (mV) =
100
Σ ^{( Vi − V )2}
i=1
,
100
Σ ^{1 100}
V=
100
Vi
i=1
Vi :A valid pixel output signal among all of the valid pixels for each color.
VOUT
V1
V2
line1
line2
V100
line100
This is measured by the DC level sampling of only the signal level, not by CDS (Correlated Double Sampling).
11. Total transfer efficiently : TTE
The total transfer rate of CCD analog shift register. This is calculated by the following formula, it is defined by
each odd output.
TTE(%) = (1-Vb/average output of all the valid pixels) × 100
Vb
7435
Vb: The spilt pixel output (7435th pixel)
7431 7433
Data Sheet S17961EJ2V0DS
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