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參數(shù)資料
| 型號： | TLDR5400 |
| 廠商： | VISHAY SEMICONDUCTORS |
| 元件分類： | 參考電壓二極管 |
| 英文描述： | LED Uni-Color Red 650nm 2-Pin T-1 3/4 |
| 中文描述： | Standard LED - Through Hole Red Tinted Diffused |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 773K |
| 代理商： | TLDR5400 |
PI0128WSN, PI0256WSN, PI0512WSN
Engineering Data Sheet
Page 3 of 8
Revised March 21, 2002
0.0E+00
5.0E-05
1.0E-04
1.5E-04
2.0E-04
2.5E-04
3.0E-04
3.5E-04
4.0E-04
4.5E-04
5.0E-04
100
300
500
700
900
Wavelength (nm)
R
2
)
QE=20%
QE=40%
QE=60%
QE=80%
Figure 4. Predicted spectral response.
Note: Quantum Efficiency (QE) can be calculated by
dividing the responsivity by the area of the sensor's
element and multiplying the resulting ratio by the
energy per photon in electron volts (eV).
The dark current is typically 0.2 pA at 25
o
C and varies
as function of temperature. The dark current will con-
tribute dark-signal charges and these charges will
increase linearly with integration time. The dark signal
and the photogenerated signal combined result in the
total signal charge.
Self-Scanning Circuit
Figure 5 shows a simplified electrically equivalent
circuit diagram of the photodiode array. An MOS read
switch connects every photodiode in the array to a
common output video line. Incident photons generate
electron charge that is collected on each imaging
photodiode while the switch is open. The shift register
is activated by the start pulse. A pulse propagates
through each shift register stage and activates the
MOS read switches sequentially. As the shift register
sequentially closes each read switch, the negative
stored charge, which is proportional in amount to the
light exposure, from the corresponding photodiode is
readout onto the video line, QOUT. Typically, an
external charge-integrating amplifier senses the nega-
tive output charge on the video line from each photodi-
ode pixel. The shift register continues scanning the
photodiodes in sequence, until the last shift register
stage is reach, at which time the fourth and last dummy
pixel is read out and end-of-scan (EOS) output is held
high for one clock cycle. The next start pulse can then
restart the shift register.
I/O Pins
Although the WSN package has 22 pins, as shown in
Figure 1, there are only 6 functionally active I/O pins in
addition to the supply pins, as shown in Figure 5. In
essence, only two clocks, CLK and START, are re-
quired for controlling the timing of the sensor's video
readout. The remaining I/O descriptions are for the
Figure 5. Simplified circuit diagram of a WSN photodiode array.
SHIFT REGISTER
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI0512WS | 512-Pixel 50-mm-Pitch Wide Aperture Spectroscopic Photodiode Array |
| TLDR4900 | LED Uni-Color Red 650nm 2-Pin T-1 |
| PI29FCT2520ATP | 12-Bit, 3µs, 250kHz Sampling A/D Converter; Package: PDIP; No of Pins: 24; Temperature Range: 0°C to +70°C |
| PI29FCT2520ATQ | 12-Bit, 3µs, 250kHz Sampling A/D Converter; Package: PDIP; No of Pins: 24; Temperature Range: 0°C to +70°C |
| PI29FCT2520ATR | Pipeline Register |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLDR5400 | 制造商:Vishay Intertechnologies 功能描述:LED 5MM RED |
| TLDR5800 | 功能描述:標準LED-通孔 Red Clear Non-Diff RoHS:否 制造商:Vishay Semiconductors 照明顏色:Red 光強度:0.7 mcd 波長/色溫:615 nm 顯示角:45 deg 透鏡顏色/類型:Clear, Non-Diffused 正向電流:70 mA 正向電壓:1.83 V to 3.03 V LED 大小:2 mm 系列: 封裝:Tube |
| TLDR5800 | 制造商:Vishay Intertechnologies 功能描述:LED 5MM RED |
| TLDR5800-AS12Z | 制造商:Vishay Semiconductors 功能描述: |
| TLDR6400 | 制造商:Vishay Semiconductors 功能描述:5MM LED RED TINT. CLEAR-E2 - Tape and Reel 制造商:Vishay Semiconductors 功能描述:5MM LED RED TINT. CLEAR2 |
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