参数资料
型号: XRD9826ACU-F
厂商: Exar Corporation
文件页数: 5/33页
文件大小: 0K
描述: IC 16B CCD/CIS SIG PROC 20SSOP
标准包装: 66
位数: 16
通道数: 3
电压 - 电源,模拟: 3V,5V
电压 - 电源,数字: 3V,5V
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
供应商设备封装: 20-SSOP
包装: 管件
XRD9826
13
Rev. 1.10
This value corresponds to the black reference of the
image sensor. When the CLAMP pin is set back to low,
the ADC samples the video signal with respect to the
black reference. The typical value for the external
capacitor is 100pF. This value should be adjusted
according to the time constant (Tc) needed in a
particular application. The CLAMP pin has an internal
150 ohm impedance (R
INT) which is in series with the
external capacitor (C
EXT).
Figure 7. CIS AC Coupled Application
Therefore, Tc =1/R
INTCEXT
If the input to the external capacitor has a source
impedance (R
EXT), then:
T
c=1/(RINT+REXT)CEXT
RL
VRT
VRB
VDD
XRD9826
CLAMP
RINT
RED
M
U
X
C
I
S
REXT CEXT
N/C
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