5

TH7813A/TH7814A

1990A–IMAGE–05/02

Figure 5. Pixel Readout Timing Diagram

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:

Note:

Clock capacitance: TH7813A = 50 pF, TH7814A = 100 pF

L1

L2

R

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%

Crossover at 50%

Rise and fall time

10 ns

Rise and fall time

8 ns

Video outputs are synchronous

Video signal occurs on

L2 falling edge

First useful pixel occurs on 5th

falling edge of

L2 after

P

Antiblooming Gate

ΦA

Min

Typ

Max

Unit

Clock Capacitance (see note)

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