TH7814A Datasheet, PDF (5/10 Pages) ATMEL Corporation – 50 MHz 1024/2048 Linear CCDs

TH7813A/TH7814A
Figure 5. Pixel Readout Timing Diagram
L1
Tpixel
90%
tr
10%
L2
0 ns
90%
tf
10%
±
50%
R
10 ns
Duty cycle: 50% ± 10%
Crossover at 50% ± 10%
Rise and fall time 10 ns
Rise and fall time 8 ns
floating diode level
Offset in darkness
VIDEO OUTPUTS
Reset Feedthrough
Video signal
Video outputs are synchronous
Video signal occurs on L2 falling edge
First useful pixel occurs on 5th
falling edge of L2 after P
Exposure Time
Reduction
The antiblooming structure of the TH7813A and TH7814A provides an electronic shutter
capability by clocking phase fA during the line period. The timing diagram is described
below:
Antiblooming Gate
ΦA
Min
Typ
Max
High Level
8.5
9
9.5
Low Level
2
4
7
Pulse Min.
200
Note: Clock capacitance: TH7813A = 50 pF, TH7814A = 100 pF
Unit
V
V
ns
Clock Capacitance (see note)
Low Level Sets Saturation Level
See Pixel Saturation Adjustment
5
1990A–IMAGE–05/02