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LDDEVALP bảng dữ liệu(PDF) 9 Page - Wavelength Electronics, Inc.

tên linh kiện LDDEVALP
Giải thích chi tiết về linh kiện  Low Noise Laser Diode Drivers
PDF  28 Pages
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nhà sản xuất  WAVELENGTH [Wavelength Electronics, Inc.]
Trang chủ  https://www.teamwavelength.com/
Logo WAVELENGTH - Wavelength Electronics, Inc.

LDDEVALP bảng dữ liệu(HTML) 9 Page - Wavelength Electronics, Inc.

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9
LDD P SERIES LASER DIODE DRIVER
GROUNDING
Some laser diode packages short either the laser diode
anode or cathode to the case, which may connect the laser
electrically to earth ground. Review the internal connections
of the LDD P to make sure ground loops are not inadvertently
created by this situation. Special attention to the details of
grounding will ensure safe operation.
Unless Earth and Instrument Ground are
connected via the power supply, Instrument Ground
is floating with respect to Earth Ground
Earth Ground on
USA 115 VAC wall socket
Common or
Instrument Ground
EARTH
DC POWER SUPPLY
-
+
WIRING THE LDD P SERIES FOR CONSTANT
CURRENT OPERATION
Figure 5 through Figure 7 give the wiring diagrams to
operate the different LDD P models in Constant Current
mode.
To simplify wiring, use evaluation board LDDEVALP. Setup
diagrams are found on page 14.
Recommended TesT Loads
Figure 5 illustrates how to create a constant current
simulated load for the LDD P Series laser diode drivers.
The simulated load allows the configuration of the LDD P
without intially connecting the laser diode. Once the laser
diode driver is adjusted to the correct output current and
laser diode limit current, power it down before connecting
a laser diode.
LD ANODE
FEEDBACK
LD CATHODE
7
6
5
LDD 1P MODELS
1N4001
1N4001
LDD 2P MODELS
TO PIN 1
LD CATHODE
FEEDBACK
LD ANODE
7
6
5
1N4001
1N4001
Rail-to-rail
Op-amp
1 Ω, 0.25 W
1 Ω, 0.25 W
TO
Figure 5. The test loads shown above simulate a constant
current load for the LDD P Series Laser Diode Drivers.



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