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| 型号： | XRD9826ACU-F |
| 厂商： | Exar Corporation |
| 文件页数： | 10/33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 |
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XRD9826
18
Rev. 1.10
Figure 12. Timing Diagram for Figure 11.
CIS Rotating Gain and Offset
Line-By-Line (Md 11)
ADCCLK
CIS
SYNCH
GAIN/
OFFSET
LD
Red Pixel Line Scan
Grn Pixel Line Scan
Blu Pixel Line Scan
Red Gain/Offset Cycle
Grn Gain/Offset Cycle
Blu Gain/Offset Cycle
Reset Internal Mux Color to Red Channel (LD = 110YYYYYY11)
tsa
tsypw
Note: Y = Previous State
Tri-State (SYNCH = LO)
CCD Configuration (Charge Coupled Device)
Mode 1. AC Coupled
In the CCD configuration of operation, an external
capacitor needs to be chosen according to the equa-
tions below. The typical value for the external capacitor
is 100pF. This value should be adjusted according to
the time constant (Tc) needed in a particular applica-
tion. The CLAMP pin has an internal 150 ohm imped-
ance (R
INT) which is in series with the external capacitor
(C
EXT).
Therefore, Tc =1/R
INTCEXT
If the input to the external capacitor has a load
impedance (R
EXT), then
T
c=1/(RINT+REXT)CEXT
When CLAMP (clamp) pin is set high an internal switch
allows one side of the external capacitor to be set to
VRT (Figure 13). This value corresponds to the black
reference of the CCD. When the CLAMP pin is set back
to low, the ADC samples the video signal with respect
to the black reference. The difference between the
black reference and the video signal is the actual pixel
value of the video content. Since this value is refer-
enced to the top ladder reference voltage of the ADC a
zero input signal would yield a full scale output code.
Therefore, the output of the conversion is inverted
(internally) to correspond to zero scale output code.
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相关代理商/技术参数 |
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| XRD9826ACUTR | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| XRD9827 | 制造商:EXAR 制造商全称:EXAR 功能描述:12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control |
| XRD9827ACD | 制造商:EXAR 制造商全称:EXAR 功能描述:12-Bit Linear CIS/CCD Sensor Signal Processor with Serial Control |
| XRD9827ACD-F | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| XRD9827ACDTR-F | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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