Summary of Contents for PICOLAS LDP-AV 16N45-40
- Page 1 User Manual LDP-AV 16N45-40 PicoLAS GmbH Burgstr. 2 52146 Würselen Germany Phone: +49 (0) 2405-64594-60 Fax: +49 (0) 2405-64594-61 E-mail: info@picolas.de Web: www.picolas.de Rev. 1911...
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Page 2: Table Of Contents
Table of Contents Product Overview ......................3 How to use the Manual....................4 Dos and Don’ts ......................5 How to get started......................6 Connection of the Laser Diode..................7 How to connect the Driver ....................8 Pulse Input ........................10 Channel Selection ......................10 Power Supply Requirements ..................12 Trigger Output Monitor ....................13 Current Consumption ....................13 Cooling ........................13... -
Page 3: Product Overview
LDP-AV D06-N20... -
Page 4: How To Use The Manual
How to use the Manual Notice: Depending on the final application and operation regime, this unit must be assembled onto a heat sink or may stay non-cooled. Improper cooling may cause damage to the electronic components. Before powering on your driver unit read this manual thoroughly and make sure you have understood everything. -
Page 5: Dos And Don'ts
Dos and Don’ts Never ground any output connector. Never use any grounded probes at the output. Do not connect your oscilloscope to the output! This will immediately destroy the driver and the probe! Do not connect voltages in reverse polarity to the device as there is no built-in protection circuit. -
Page 6: How To Get Started
How to get started Step What to do Check Unpack your device. Attach the laser diode to the driver. Please see section “Connection of the Laser Diode” for further details. Assemble the driver onto an appropriate See section “Power Losses” for heat sink. -
Page 7: Connection Of The Laser Diode
LD-Pads Figure 2: Layout of the LDP-AV 16N45-40 with a marking of the LD pads Many elements and parasitic “stray” components may affect the performance of the driver unit. The stray inductance of the load connected to the driver is very important. The term “load”... -
Page 8: How To Connect The Driver
How to connect the Driver Connector 1 Figure 3: Layout of the LDP-AV 16N45-40 with a marking of the connector 1... - Page 9 Signals of the 20 pin SAMTEC_20POL_TEM-110-02-03.0-G-D-L1 header (connector 1): Pin Name Description SYNCP Positive Sync output - Digital LVDS SYNCN Negative Sync output - Digital LVDS Trigger positiv input, positiv EDGE-Triggering – Digital LVDS Trigger positive input, negative EDGE-Triggering – Digital LVDS CHSEL0 Binary channel selection BIT0.
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Page 10: Pulse Input
LVDS receiver. Note: It is recommended to keep the trigger pulse width within the range of 1 µs .. 100 µs. The LDP-AV 16N45-40 has an internal short pulse sharpener included. This feature assures a constant pulse width. Channel Selection This driver includes an internal multiplexer which allows to select a specific channel thus a laser diode. - Page 11 Figure 4: Close up of the laser diode footprint and their indicators Figure 5: Laser diode footprint and their indicators This driver is capable for individual coding methods. Therefore the LDP-AV 16N45-40 features the ability of fast channel selection up to 1 MHz.
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Page 12: Power Supply Requirements
Power Supply Requirements The driver requires a stabilized +5 V supply (used by control logic). Adhere to the power-up sequence as follows: 1) Fully ramp up the +5 V rail 2) Enable the HV supply 3) Apply trigger signal Should you aim to connect a large number of driver units to a single power supply the high start-up current spikes can be taken care of by using an additional capacitor bank and hard power switching at its output. -
Page 13: Trigger Output Monitor
Trigger Output Monitor The trigger output signal is generated with an integrated, isolated Rogowski coil and provides an ultra fast galvanically isolated signal. The signal shape is proportional to the derivative of the load current. It can be used for a current response triggering signal and has no delay to the load current. -
Page 14: Recommended Operating Conditions
Recommended Operating Conditions Supply voltages Min. Typ. Max. Unit +5 V +4.75 +5.0 +5.2 Trigger input Min. Typ. Max. Unit Differential input low -100 threshold Differential input high threshold Pulse width µs Repetition rate Channel selection Min. Typ. Max. Unit CHSEL0 / CHSEL1 / CHSEL2 / CHSEL3 +2.4... -
Page 15: Mechanical Dimensions
Mechanical Dimensions All dimensions are in millimetres (mm). Figure 7: Mechanical dimension of LDP-AV 16N45-40...
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