LUPA-1300 CYPRESS [Cypress Semiconductor], LUPA-1300 Datasheet - Page 22

• Manufacturer Part Number: LUPA-1300
• Description: 1.3 M Pixel High Speed CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

3.8.1 Power supplies and grounds
Every module on chip, as there are: column readout, output stages, digital modules,
drivers, … has its own power supply and ground. Off chip the grounds can be
combined, but not all power supplies may be combined.
power supplies, but is required to reduce electrical crosstalk and to improve shielding.
On chip we have the ground lines also separately for every module to improve
shielding and electrical crosstalk between them.
“Gnd_res”, which can be used to remove the blooming if any and which can improve
optical crosstalk.
An overview of the supplies is given in table 7. The power supplies related to the
pixel array signals are described in the paragraph concerning the pixel array signals.
Note: Normal application doesn’t require this Gnd_res and it can be connected to
ground.
The maximum currents mentioned in table 7 are peak currents. The power supplies
need to be able to deliver these currents especially the maximum supply current for
Vpix.
It is important to notice that we don’t do any power supply filtering on chip and that
noise on these power supplies can contribute immediately to the noise on the signal.
Especially the voltage supplies Vpix and Vdda are important to be well noise free.
With respect to the power supply Voo, a special decoupling is used, for which an
additional power supply Vstable is required.
Cypress Semiconductor Corporation
Contact [e-mail]
VmemH
VmemL
Vstable
Name
Vdda
Vddr
Vpix
Vres
Vdd
Voo
LUPA-1300
Datasheet
curren
200mA
20mA
50mA
85mA
20mA
50mA
50mA
50mA
Max
6mA
t
Table 7: power supplies used in the LUPA design
Typ. Max
5.5V
4.5V
5V
5V
5V
5V
5V
6V
6V
Document # : 38-05711 Rev.**( Revision 3.1)
3901 North First Street
6V
6V
Power supply column readout module
Power supply digital modules
Power supply output stages
Power supply output stages. Decouples noise
on the Voo supply from the output signal.
Power supply pixel array.
Power supply logic for drivers
Power supply to reset the pixels
Power supply for high DC level Vmem
Power supply for low DC level Vmem
San Jose, CA 95134
The only special ground is
Description
This results in several
Page 22 of 48
408-943-2600