TH7888A Datasheet, PDF (14/21 Pages) ATMEL Corporation – Area Array CCD Image Sensor (1024 x 1024 Pixels with Antiblooming)

Electro-optical
Performance
• General conditions:
Temp = 25°C (package temperature)
Light source: 2854 K with 2 mm BG38 filter (unless specified) + F/3.5 optical
aperture.
30 images per second mode (Ti = 33 ms) under typical operating conditions
• Readout mode: 2 outputs
• Values exclude dummy elements and blemishes
Table 7. Performance Description and Values
Value
Parameter
Symbol
Min
Typ
Max
Unit
Remarks
Output register saturation level
V_SAT reg
–
2.6
–
V
Pixel saturation level
V_SAT
1.6
1.9
3
V
(1)
Pixel saturation charge (electron per pixel)
Q_SAT
–
320
–
ke-
Responsivity at 640 nm
Responsivity with BG38 filter
R
–
6.5
–
V/(µJ/cm²)
3
4
–
V/(µJ/cm²)
Quantum efficiency at 640 nm
QE
–
15
–
%
See Figure 17
Photo response non uniformity (1σ)
PRNU
–
0.4
1.7
%Vos
Dark signal non uniformity (1σ)
DSNU
–
0.28
0.4
mV
(2)
Average dark signal
V_DS
–
2
3
mV
(3)
–
4
5.6
mV
(4)
Temporal RMS noise in darkness (last line)
V_N
–
200
–
µV
(5)
Dynamic range
D
–
80
–
dB
(6)
Horizontal modulation transfer function at 500
MTF
–
70
–
%
(7)
nm
Vertical charge transfer inefficiency (per
VCTI
–
–
2.5.10^-5
–
(8)
stage)
Horizontal charge transfer inefficiency (per
HCTI
–
–
5.10^-5
–
(9)
stage)
Notes:
1. Pixel saturation (full well) as a function of vertical transfer frequency (see Figure 14 on page 15) and antiblooming adjust-
ment (see Figure 15 on page 15).
2. After substraction of dark signal slope due to memory readout time.
3. First line level referenced from inactive prescan elements (12 samples).
4. Last line level referenced from inactive prescan elements (12 samples).
5. Measured with Correlated Double Sampling (CDS) including 160 µV readout noise and dark current noise in general test
conditions.
6. Saturation to RMS noise in darkness ratio.
7. At Nyquist frequency.
8. VSAT/2 measurement and 417 kHz vertical transfer frequency.
9. VSAT/2 measurement and 10 MHz horizontal transfer frequency.
14 TH7888A
1999A–IMAGE–09/03