Rainbow Electronics TH7815ACC - Manual (Page 5)

5
TH7815ACC
1995A–IMAGE–04/02
The following diagram shows the detailed timing for the pixel readout:
Figure 3. Pixel Readout Timing Diagram
Exposure Time
Reduction
The TH7815ACC antiblooming structure provides an electronic shutter capability by
clocking phase
Φ
A during the line period. The timing diagram is described below:
L1 Φ
L2 Φ
R Φ
10%
90%
90%
10%
tr
tf
Tpixel
≥
0 ns ≥
10 ns
50%
Video signal
Reset Feedthrough
Offset in darkness
VIDEO OUTPUTS
±
floating diode level
Duty cycle: 50% ± 10%
Crossover at 50% ± 10%
Rise and fall time ≤ 10 ns
Rise and fall time ≤ 8 ns
Video outputs are synchronous
Video signal occurs on Φ L2 falling edge
First useful pixel occurs on 5th
falling edge of
Φ L2 after Φ P
Antiblooming Gate
Φ
A Min. Typ. Max. Unit Clock Capacitance < 200 pF
High Level 8.5 9 9.5 V Low Level Sets Saturation Level
Low Level 2 4 7 V See Pixel Saturation Adjustment
Pulse Min. 200 ns