upd8874 Renesas Electronics Corporation., upd8874 Datasheet - Page 20

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

DEFINITIONS OF CHARACTERISTIC ITEMS
1. Saturation voltage : V
2. Saturation exposure : SE
3. Photo response non-uniformity : PRNU
4. Average dark signal : ADS
20
Output signal voltage at which the response linearity is lost.
Product of intensity of illumination (lx) and storage time (s) when saturation of output voltage occurs.
The output signal non-uniformity of all the valid pixels when the photosensitive surface is applied with the light of
uniform illumination. This is calculated by the following formula.
Average output signal voltage of all the valid pixels at light shielding. This is calculated by the following formula.
ADS (mV) =
PRNU (%) =
Register Dark
10800
Δ
10800
x
Σ
j=1
x
V
DC level
Δx : maximum of | x
x =
x
OUT
d
j
d
× 100
j
: Output voltage of valid pixel number j
j
sat
: Dark signal of valid pixel number j
10800
10800
Σ
j=1
x
j
j
− x |
Δ
x
Data Sheet S18773EJ1V0DS
x
μ
PD8874