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參數資料
| 型號： | TLV987CPFB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, TQFP-48 |
| 文件頁數： | 10/21頁 |
| 文件大小： | 285K |
| 代理商： | TLV987CPFB |
TLV987
3-V 10-BIT 27 MSPS AREA CCD SENSOR
SIGNAL PROCESSOR
SLAS211A – MARCH 1999 – REVISED SEPTEMBER 1999
18
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
First Line
CCD
1
CCD
2
CCD
3
CCD
4
CCD
1
CCD
2
CCD
3
CCD
4
2∧N+1 PIXELS
During this interval an offset of 255 LSB is
intentionally added to the PGA output (see Note)
ADC OUT
for black pixels
OBLC (internal)
OBPC (internal)
ADD255 (internal)
ADCCLK
OBCLP
CDS OUT (internal)
CCD output
SV
SR
PGA samples
”CCD1”
Initiates internal counters, etc.
ADC
1
ADC
2
ADC
3
ADC
4
Second Line
2∧N+1 PIXELS
DACs are updated
3 half cycles
allow settling
Latency = 4.5 Cycles
Figure 6. Optical Black and Offset Correction Timing
To avoid the ADC being clipped on differential negative input signals, an internal offset that is equal to 255 ADC
LSBs is intentionally added to the PGA output signal. This offset is only added during the optical black pixel
interval with a total duration of 2N + 3 pixels, where three additional pixels are necessary for accommodating
internal latency adjustment.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TLV987PFB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V 10-BIT 27 MSPS AREA CCD SENSOR SIGNAL PROCESSOR |
| TLV990 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V, 10-BIT, 28-MSPS AREA CCD AND VIDEO SIGNAL PROCESSOR |
| TLV990-13 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V, 10-BIT, 13-MSPS AREA CCD ANALOG FRONT END |
| TLV990-13PFB | 功能描述:視頻模擬/數字化轉換器集成電路 CCD Sig Processor/ Digitizer Designed RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
| TLV990-13PFBG4 | 功能描述:視頻模擬/數字化轉換器集成電路 CCD Sig Processor/ Digitizer Designed RoHS:否 制造商:Texas Instruments 輸入信號類型:Differential 轉換器數量:1 ADC 輸入端數量:4 轉換速率:3 Gbps 分辨率:8 bit 結構: 輸入電壓:3.3 V 接口類型:SPI 信噪比: 電壓參考: 電源電壓-最大:3.45 V 電源電壓-最小:3.15 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TCSP-48 封裝:Reel |
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