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KAI-10100 Datasheet(PDF) 9 Page - ON Semiconductor |
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KAI-10100 Datasheet(HTML) 9 Page - ON Semiconductor |
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9 / 51 page  KAI-10100 Image Sensor www.truesenseimaging.com Revision 1.1 PS-0027 Pg 9 HORIZONTAL REGISTER Output Structure ESD RF3 RF4 RF2 RF1 RG (Reset) RD RDen floating diffusion VOUT VDD SUB SUB15 16k 4k 1.5k 1.5k 0.75k 18k 7.5k 10k 100k Figure 2: Output Architecture (each output) Charge packets contained in the horizontal register are dumped pixel by pixel onto the floating diffusion (fd) output node whose potential varies linearly with the quantity of charge in each packet. The amount of potential charge is determined by the expression ΔVfd=ΔQ/Cfd. A three-stage source-follower amplifier is used to buffer this signal voltage off chip with slightly less than unity gain. The translation from the charge domain to the voltage domain is quantified by the output sensitivity or charge to voltage conversion in terms of microvolts per electron (μV/e -). The dual parallel horizontal CCDs are presented a new line during the horizontal retrace period. H1, H3, H4 and H4L are held low while the vertical registers transfer the next line to the horizontal. H2 and HTG are held high. HTG shifts low then H1 taken high. This shifts the charge in the Horizontal Registers forward one phase so the charge packets in the A and B registers are now aligned. Both horizontal CCD’s then transport each line, pixel by pixel, to the A and B output structures by clocking the H1 and H2 pins alternately with the H3 and H4 pins in a complementary fashion. A separate connection to the last H4 phase (H4L) is provided to improve the transfer speed of charge to the floating diffusion. On each falling edge of H4L a new charge packet is dumped onto a floating diffusion and sensed by the output amplifier. After the signal has been sampled off chip, the reset clock (RG) removes the charge from the floating diffusion and resets its potential to the reset drain voltage (RD), which is set on-chip. Internal connections |
Similar Part No. - KAI-10100 |
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Similar Description - KAI-10100 |
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