參數(shù)資料
型號: XRD9827ACU
廠商: EXAR CORP
元件分類: 模擬信號調(diào)理
英文描述: 12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO20
封裝: 5.30 MM, SSOP-20
文件頁數(shù): 12/32頁
文件大?。?/td> 264K
代理商: XRD9827ACU
XRD9827
12
Rev. 1.20
CIS Mode Timing -- DC Coupled
(CLAMP disabled)
ADCCLK
tckhw
tcklw
tckpd
tap
tap
Pixel N-1
Pixel N
tdv
Pixel N+1
CIS
tdv
[5:0]
[11:6]
N-8
MSB
N-8
LSB
N-7
MSB
N-7
LSB
N-6
MSB
N-6
LSB
N-5
MSB
N-5
LSB
DB
Figure 6. Timing Diagram for Figure 5
ADCCLK
Events
ADC Sample & PGA Start Tracking next Pixel
MSB Data Out
LSB Data Out
ADC Track PGA Output
ADC Hold/Convert
HI
LO
Table 1.
Mode 2. AC Coupled
If the CIS signal has a black reference for the video
signal, an external capacitor C
is used. When
CLAMP (clamp) pin is set high an internal switch allows
one side of the external capacitor to be set to ground.
It then is level shifted to correspond to the bottom ladder
reference voltage of the ADC (Figure 7).
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