- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384797 > OPT209 (Texas Instruments, Inc.) Photodiode With On-Chip Amplifier(帶片內放大器的光電二極管) PDF資料下載
參數(shù)資料
| 型號： | OPT209 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Photodiode With On-Chip Amplifier(帶片內放大器的光電二極管) |
| 中文描述： | 光電二極管帶有片上放大器（帶片內放大器的光電二極管） |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 159K |
| 代理商： | OPT209 |
7
OPT209
APPLICATIONS INFORMATION
Figure 1 shows the basic connections required to operate the
OPT209. Applications with high-impedance power supplies
may require decoupling capacitors located close to the
device pins as shown. Output is zero volts with no light and
increases with increasing illumination.
metal, and differential stages are cross-coupled. Furthermore,
the photodiode area is very large relative to the op amp input
circuitry making these effects negligible.
If your light source is focused to a small area, be sure that
it is properly aimed to fall on the photodiode. If a narrowly
focused light source were to miss the photodiode area and
fall only on the op amp circuitry, the OPT209 would not
perform properly. The large (0.090
x
0.090 inch) photodiode
area allows easy positioning of narrowly focused light sources.
The photodiode area is easily visible—it appears very dark
compared to the surrounding active circuitry.
The incident angle of the light source also affects the
apparent sensitivity in uniform irradiance. For small incident
angles, the loss in sensitivity is simply due to the smaller
effective light gathering area of the photodiode (proportional
to the cosine of the angle). At a greater incident angle, light
is diffused by the side of the package. These effects are
shown in the typical performance curve “Response vs Incident
Angle.”
Photodiode current, I
D
, is proportional to the radiant power
or flux (in watts) falling on the photodiode. At a wavelength
of 650nm (visible red) the photodiode Responsivity, R
I
, is
approximately 0.45A/W. Responsivity at other wavelengths
is shown in the typical performance curve “Responsivity vs
Wavelength.”
The typical performance curve “Output Voltage vs Radiant
Power” shows the response throughout a wide range of
radiant power. The response curve “Output Voltage vs
Irradiance” is based on the photodiode area of 5.23
x
10
–6
m
2
.
The OPT209’s voltage output is the product of the photodiode
current times the feedback resistor, (I
D
R
F
). The internal
feedback resistor is laser trimmed to 1M
±
2%. Using this
resistor, the output voltage responsivity, R
V
, is approximately
0.45V/
μ
W at 650nm wavelength.
An external resistor can be connected to set a different
voltage responsivity. Best dynamic performance is achieved
by connecting R
EXT
in series (for R
F
> 1M
), or in parallel
(for R
F
< 1M
), with the internal resistor as shown in
Figure 2. These connections take advantage of on-chip
capacitive guarding of the internal resistor, which improves
dynamic performance. For values of R
F
less than 1M
, an
external capacitor, C
EXT
, should be connected in parallel
with R
F
(see Figure 2). This capacitor eliminates gain
peaking and prevents instability. The value of C
EXT
can be
read from the table in Figure 2.
LIGHT SOURCE POSITIONING
The OPT209 is 100% tested with a light source that uniformly
illuminates the full area of the integrated circuit, including
the op amp. Although all IC amplifiers are light-sensitive to
some degree, the OPT209 op amp circuitry is designed to
minimize this effect. Sensitive junctions are shielded with
I
is proportional
to light intensity
(radiant power).
1M
OPT209
3
10pF
175
2
8
5
4
1
V
O
–15V
+15V
0.1μF0.1μF
V
O
= I
D
R
F
R
F
I
D
I
D
(0V)
λ
FIGURE 1. Basic Circuit Connections.
FIGURE 2. Using External Feedback Resistor.
EQUIVALENT R
F
100M
10M
1M
330k
100k
33k
≤
20k
C
EXT
(1)
(1)
(1)
(1)
pF
9pF
25pF
(2)
NOTES: (1) No C
required. (2)
Not recommended due to possible
op amp instability.
1M
OPT209
3
3pF
175
8
5
4
1
V
O
= I
D
R
F
V–
λ
V+
R
EXT
C
EXT
2
R
F
= R
EXT
|| 1M
For R
F
< 1M
1M
OPT209
175
5
4
V
O
= I
D
R
F
V–
λ
V+
2
R
F
= R
EXT
+ 1M
For R
F
> 1M
R
EXT
相關PDF資料 |
PDF描述 |
|---|---|
| OPT210 | Monolithic Photodiode And Amplifier(單片光電二極管和放大器) |
| OPT6794 | Phototransistor |
| OPTO-3001 | DIGITAL DATA LICKS (660 & 800 nm) |
| OPTO-3001A | DIGITAL DATA LICKS (660 & 800 nm) |
| OR2C04A | Field-Programmable Gate Arrays(現(xiàn)場可編程門陣列) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| OPT209P | 制造商:BB 制造商全稱:BB 功能描述:PHOTODIODE WITH ON-CHIP AMPLIFIER |
| OPT209P-J | 制造商:BB 制造商全稱:BB 功能描述:PHOTODIODE WITH ON-CHIP AMPLIFIER |
| OPT-20A | 制造商:Payne Engineering Company 功能描述:OPTION-20 CARD CONTROL INPUT 制造商:Payne Engineering Company 功能描述:OPTION-20 CARD CONTROL INPUT; Series:18; Features:For use with Payne Engineerings 18D Series Single-Phase, Variable-Voltage Solid-State SCR AC Power Control ; For Use With:Payne 18D Series Solid State AC Power Control ;RoHS Compliant: NA |
| OPT-20C | 制造商:Payne Engineering Company 功能描述:OPTION-20 CARD CONTROL INPUT 制造商:Payne Engineering Company 功能描述:OPTION-20 CARD CONTROL INPUT; Series:18; Features:For use with Payne Engineerings 18D Series Single-Phase, Variable-Voltage Solid-State SCR AC Power Control ; For Use With:Payne 18D Series Solid State AC Power Control ;RoHS Compliant: NA |
| OPT210 | 制造商:BB 制造商全稱:BB 功能描述:MONOLITHIC PHOTODIODE AND AMPLIFIER 300kHz Bandwidth at RF = 1MW |
發(fā)布緊急采購，3分鐘左右您將得到回復。