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參數(shù)資料
| 型號(hào)： | XRD9818ACGTR-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 2/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC 16B CCD/CIS SIG PROC 28TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 位數(shù)： | 16 |
| 通道數(shù)： | 3 |
| 功率（瓦特）： | 325mW |
| 電壓 - 電源，模擬： | 3 V ~ 3.6 V |
| 電壓 - 電源，數(shù)字： | 3 V ~ 3.6 V |
| 封裝/外殼： | 28-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 28-TSSOP |
| 包裝： | 帶卷 (TR) |
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XRD9818
xr
3-CHANNEL 16-BIT LINEAR CCD/CIS SENSOR SIGNAL PROCESSOR
REV. 1.0.1
10
2.4
3-CH CIS Mode
In this mode the XRD9818 simultaneously samples (S/H) the red, green and blue channel inputs. The video
level is sampled on the falling edge of VSAMP. Each channels S/H extracts the video information from each
pixel. This data is level shifted and gained up according to the contents of the Offset and PGA registers
respectively. The data is then sequentially converted (Red
→ Green → Blue) by a 16-bit A/D converter.
In CIS mode, each channel input is sampled with respect to the voltage at the CMN- input. The voltage at
CMN- can be either generated by a programmable internal reference (C/R DAC) or supplied by an external
source.
The timing for this mode is shown in Figure 18.
2.5
2-CH CIS Mode
The 2-CH mode operates identically to the 3-CH CIS mode except that only 2 channels are actively used to
process CIS output signals.
The two channels to be used and the order in which they process data is
determined from the configuration of the Input-Mux/Channel-Select bits (CH[2:0]) located in the Mode 1
register. There are four possible 2-CH configurations, RG, GR, GB and BR. To conserve power the channel
not being utilized is powered down.
2.6
1-CH CIS Mode
The 1-CH mode operates identically to the 3-CH or 2-CH CIS modes except that the channel sampled is fixed
to only one input. The channel selection is set by the Input-Mux/Channel-Select bits (CH[2:0]) located in the
Mode 1 register. There are three possible one channel modes: R, G or B. The channels not being used will be
powered down.
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