参数资料
型号: XRD98L59AIGTR-F
厂商: Exar Corporation
文件页数: 16/37页
文件大小: 0K
描述: IC CCD DIGITIZER 10BIT 28TSSOP
标准包装: 2,500
位数: 10
通道数: 1
电压 - 电源,模拟: 2.7 V ~ 3.6 V
电压 - 电源,数字: 2.7 V ~ 3.6 V
封装/外壳: 28-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 28-TSSOP
包装: 带卷 (TR)
23
Rev. 2.00
XRD98L59
BLACK LEVEL OFFSET CALIBRATION
CDS
10-bit ADC
Hot Pixel
Clipper
Pixel
Averager
+
Coarse
Accumulator
Fine
Accumulator
Offset Calibration Logic
10
2/)
Reg
2/)
CalHold, SpeedUp
Target Offset Code
Gain Code
DB[9:0]
4-bit
10-bit
+
10
Black Level
Offset Calibration
Loop
DNS
ManDAC
CDAC, FDAC
From Serial
Interface
Registers
CCD
Signal
CDAC
FDAC
DNS
Filter
-
+
Figure 15. Black Level Offset Calibration Block Diagram
To get the maximum color resolution and dynamic range,
the XRD98L59 uses a digitally controlled feedback cir-
cuit to correct for offset in the CCD signal as well as offset
in the CDS, PGA & ADC signal path. This calibration is
done while the CCD outputs Optical Black (OB) pixels.
The CAL input signal is used to define when the CCD
output contains OB pixels. The calibration logic will take
into account the internal pipeline delay.
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