PD8827B_15 Datasheet, PDF (17/26 Pages) Renesas Technology Corp – 7500 PIXELS × 3 COLOR CCD LINEAR IMAGE SENSOR

7. Response: R
Output voltage divided by exposure (lx•s).
Note that the response varies with a light source (spectral characteristic).
8. Image lag: IL
IL is the average signal output just after light off.
IL (mV) = V1
φ TG
Light
ON
OFF
VOUT
VOUT
μ PD8827B
V1
9. Register imbalance: RI
RI is the rate of the difference between the averages of the output voltage of Odd and Even pixels, against the
average output voltage of all the valid pixels.
n
2²
Σ n
(V2j – 1 – V2j)
RI (%) =
j=1
n
× 100
Σ ¹
n
Vj
j=1
n : Number of valid pixels
Vj : Output voltage of each pixel
10. Random noise (light shielding): σdark
Shot noise: σshot
σdark and σshot are defined as the standard deviation of a valid pixel output signal with 100 times (100 lines) data
sampling. These are measured by the DC level sampling of only the signal level, not by CDS (Correlated Double
Sampling)
σ (mV) =
100
Σ ^{(Vi – V)2}
i=1
100
100
Σ ,
V
=
1
100
Vi
i=1
Vi : A valid pixel output signal among all of the valid pixels for each color.
VOUT
V1
line1
V2
line2
V100
line100
Data Sheet S20022EJ1V1DS
15