LUPA-4000 CYPRESS [Cypress Semiconductor], LUPA-4000 Datasheet - Page 17

• Manufacturer Part Number: LUPA-4000
• Description: 4M Pixel CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

The values of the resistors depend on the value of R
between A
working of the ADC.
3.7 Synchronous shutter
In a synchronous (snapshot) shutter light integration takes place on all pixels in
parallel, although subsequent readout is sequential.
Figure 8 shows the integration and read out sequence for the synchronous shutter. All
pixels are light sensitive at the same period of time. The whole pixel core is reset
simultaneously and after the integration time all pixel values are sampled together on
the storage node inside each pixel. The pixel core is read out line by line after
integration. Note that the integration and read out cycle can occur in parallel or in
sequential mode. (ref. 4. Timing and read out of the image sensor)
3.8 Non-destructive readout (NDR)
The sensor can also be read out in a non-destructive way. After a pixel is initially
reset, it can be read multiple times, without resetting. The initial reset level and all
intermediate signals can be recorded.
quickly, but a useful signal is obtained from the early samples. For low light levels,
one has to use the later or latest samples.
Contact:
Cypress Semiconductor Corporation
LUPA-4000
Data Sheet
Line number
DC_VLOW
[e-mail]
Integration time
and A
Figure 8: Synchronous shutter operation
DC_VHIGH
Document #: 38-05712 Rev.**(Revision 1.2 )
3901 North First Street
should be at least 1.0V to assure proper
High light levels will saturate the pixels
Burst Readout time
ADC
San Jose, CA 95134
. The voltage difference
Time axis
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