PD8670_15 Datasheet, PDF (19/30 Pages) Renesas Technology Corp – 7400 PIXELS CCD LINEAR IMAGE SENSOR

µ PD8670
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 7400
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. Total transfer efficiency : TTE
The total transfer rate of CCD analog shift register. This is calculated by the following formula, it is difined by each
output.
TTE (%) = (1 − Vb / average output of all the valid pixels) × 100
Va−1
Va
Vb
Va−1 : The last pixel output − 1 (Odd pixel: 7537th pixel)
Va : The last pixel output (Odd pixel: 7539th pixel)
Vb : The spilt pixel output (Odd pixel: 7541st pixel)
Data Sheet S16749EJ1V0DS
17