CYIL1SM0300AA CYPRESS [Cypress Semiconductor], CYIL1SM0300AA Datasheet - Page 13

• Manufacturer Part Number: CYIL1SM0300AA
• Description: LUPA-300 CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

Document Number: 001-00371 Rev. *D
amplifying the signal with a factor 10 by the PGA, the full range
of the ADC can be used. In this example Vcal is set at 1.75V
(the maximum input range of the ADC) to make sure the
spread on the black level is still inside the range of the ADC
after amplification. The result after amplification is the purple
histogram
Table 10. Power Supplies
Table 11. Overview of the Power Su[pplies Related to the pixel Signals
The maximum currents mentioned inTable 10 and Table 11
are peak currents. All power supplies should be able to deliver
these currents except for Vmem_l, which must be able to sink
this current.
It is important to notice that no power supply filtering on chip
is implemented and that noise on these power supplies can
V
V
V
V
GND
GND
GND
GND
V
V
V
V
V
GND
ADC
DDA
DDD
DDO
PIX
RES
RES_DS
RES_TS
MEM_H
Name
D
A
ADC
O
DRIVERS
Name
Figure 8. Example of PGA operation.
0.75V
DC Current
3 mA
1 µA
1 µA
1 µA
1 µA
DC Current
15.7 mA
32.7 mA
6.7 mA
3.5 mA
1.45V
Peak Current
100 mA
10 mA
10 mA
10 mA
1 µA
1.65V
Peak Current
100 mA
100 mA
50 mA
50 mA
1.75V
Vcal
Volts
Min.
3.0V
3.0V
2.5V
2.5V
2.5V
2.5V
Typ.
0V
0V
0V
0V
2.8V
Typ.
2.5V
3.3V
2.0V
3.3V
0V
Operation and Signaling
Power Supplies
Every module on chip--column amplifiers, 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. This results in several different
power supplies, but this is required to reduce electrical
cross-talk and to improve shielding, dynamic range and output
swing.
On chip we have the ground lines of every module, which are
kept separate to improve shielding and electrical cross-talk
between them.
An overview of the supplies is given in Table 10 and Table 11.
Table 11 summarizes the supplies related to the pixel array
signals, where Table 10 summarizes the supplies related with
all other modules.
contribute immediately to the noise on the signal. The voltage
supplies V
noise free.
Biasing
Table 12 summarizes the biasing signals required to drive this
image sensor. For optimization reasons of the biasing of the
Max.
Max.
3.5V
3.5V
2.5V
PIX,
V
DDA
Power supply pixel array
Power supply reset drivers.
Power supply reset dual slope drivers
Power supply reset triple slope drivers
Ground of the pixel array drivers
Power supply for memory element in pixel
Power supply analog readout module.
Power supply digital modules
Power supply of ADC circuitry
Power supply output drivers
Ground of the digital module
Ground of the analog readout module
Ground of the ADC circuitry
Ground of the output drivers
and V
ADC
are especially important to be
CYIL1SM0300AA
Description
Description
Page 13 of 36
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