UPD3777 Datasheet, PDF (11/20 Pages) NEC – 5400 PIXELS x 3 COLOR CCD LINEAR IMAGE SENSOR

µ PD3777
5. Dark signal non-uniformity : DSNU
Absolute maximum of the difference between ADS and voltage of the highest or lowest output pixel of all the valid
pixels at light shielding. This is calculated by the following formula.
DSNU (mV) : maximum of dj − ADS j = 1 to 5400
dj : Dark signal of valid pixel number j
VOUT
Register Dark
DC level
ADS
DSNU
6. Output impedance : ZO
Impedance of the output pins viewed from outside.
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
The rate between the last output voltage and the next one after read out the data of a line.
φ TG
Light
ON
OFF
VOUT
V1
VOUT
IL (%) = ^V1 × 100
VOUT
9. Register imbalance : RI
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
2
∑ ²
n
(V2j – 1 – V2j)
j=1
RI (%) =
n
∑ ¹
n ^Vj
j=1
× 100
n : Number of valid pixels
Vj : Output voltage of each pixel
Data Sheet S14583EJ1V0DS00
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