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參數(shù)資料
| 型號： | XRD9818ACG |
| 廠商： | EXAR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | 3-CHANNEL 16-BIT LINEAR CCD/CIS SENSOR SIGNAL PROCESSOR |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封裝： | 4.40 MM, TSSOP-28 |
| 文件頁數(shù)： | 20/28頁 |
| 文件大小： | 496K |
| 代理商： | XRD9818ACG |
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XRD9818
3-CHANNEL 16-BIT LINEAR CCD/CIS SENSOR SIGNAL PROCESSOR
REV. 1.0.1
xr
20
The affect of the XRD9818’s offset correction DAC’s (Course & Fine) is defined as follows:
The course DAC value, VOS
COURSE
, is defined in Figure 10 and the Fine DAC value is determined as follows:
The XRD9818 offset adjustment range is designed to maximize the correction range whether being used in a
CCD or CIS application.
4.3
There are three independent PGA’s, one for each input channel: Red, Green and Blue. The individual gain
values are controlled by separate Red, Green and Blue gain registers. Each PGA has 9 bits of control for the
full gain range. See Figure 12 for the PGA transfer function. The gain increments in a binary fashion from a
minimum at code 0 to a maximum at code 511.
The PGA has two gain ranges 1x to 5x and 1.5x to 7.5x to help interface to imagers with 3V or 2V outputs
respectively. To select the 1x to 5x gain range for an imager that has a 3V single swing the GS bit in the
MODE 1 register must be set low, GS=0 (default). To select the 1.5x to 7.5x gain range for use with imagers
that have a 2V maximum signal swing the GS bit in the MODE 1 register must be set high, GS=1.
Programmable Gain
The XRD9818 channel gain equations are as follows:
F
IGURE
12. XRD9818 PGA T
RANSFER
F
UNCTION
V
A
= V
Input
- (VOS
Course
+ VOS
Fine
) note: positive offset values subtract from the input signal
VOS
Fine
=
(
)
FBx[7]
Offset Code
127
150mV
FBx[6:0]
Note : FB[7] = 0 -> (+), FB[7] = 1 -> (-)
0
1
2
3
4
5
6
7
8
0
64
128
192 256
320 384
448 512
PGA Gain Code
G
GS=1
GS=0
Gain
1 to 5
=
Gain Code
511
4
1
Gain
1.5 to 7.5
=
Gain Code
511
6.0
1.5
or
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRD9818ACG-F | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| XRD9818ACGTR | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| XRD9818ACGTR-F | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| XRD9818EVAL | 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 XRD9818 EVAL BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V |
| XRD9820 | 制造商:EXAR 制造商全稱:EXAR 功能描述:3-Channel, 10/12-Bit Linear CCd and CIS Sensor signal Processors |
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