CYII4SM1300AA CYPRESS [Cypress Semiconductor], CYII4SM1300AA Datasheet - Page 17

• Manufacturer Part Number: CYII4SM1300AA
• Description: IBIS4-1300 1.3 MPxl Rolling Shutter CMOS Image Sensor
• Manufacturer: CYPRESS [Cypress Semiconductor]

Table 7. ADC Pins (continued)
Control of the VLOW_ADC & VHIGH_ADC Reference Voltages
VLOW_ADC and VHIGH_ADC are the reference voltages for a 0 and 1023 code. A 2K-resistor ladder internally connects them. The
appropriate 2V and 4V DC voltages can be obtained as in
Linear and Non-Linear Conversion Mode – "Gamma" Correction
Document Number: 38-05707 Rev. *C
Reference Voltages
VLOW_ADC
VHIGH_ADC
PBIASDIG1
PBIASENCLOAD
PBIASDIG2
NBIASANA2
NBIASANA
Power and Ground
VDD_DIG
VDD_AN
GND_DIG
GND_AN
Name
1.400
1.200
1.000
0.800
0.600
0.400
0.200
0.000
71
61
64
65
66
69
70
56, 76
58, 74
57, 75
60, 72
2.0
Figure 14. Linear and Non-Linear ADC Conversion Characteristic
No.
Low reference and high reference voltages of ADC should be 2V to 4V.
The resistance between VLOW_ADC and VHIGH_ADC is about 1.5 K, thus this range can
be approximated by tying LOW with 2K to GND
And HIGH with 1K to VDD.
Connect with 100K to GND and decouple to VDD
Connect with 100K to GND and decouple to VDD
Connect with 100K to GND and decouple to VDD
Connect with 100K to VDD and decouple to GND
Connect with 100K to VDD and decouple to GND
These resistors determine the analog resp. digital speed /power of the ADC. Both can be
increased/decreased by lowering or increasing the resistance values.
Power supply of digital circuits of ADC, + 5 V
Power supply of analog circuits of ADC, + 5 V
Ground of digital ADC circuits
Ground of analog ADC circuits
linear
non-linear
2.5
Input signal [V]
Table 7.
3.0
pins of the ADC, and decoupled to ground.
3.5
Description
4.0
CYII4SM1300AA
Page 17 of 35
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