The HY comes in pin thru hole package. Be the first to write a review. Traditional designs have integrated the laser diode with its driver components. Increasing the voltage at pin 3 will decrease the current drive to the laser diode. The principal drawback of this configuration is that heat dissipated by the drive circuit adversely affects operation of the laser diode 10, because of the intimate contact and proximity of the laser diode. Up to 30 days refund.

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Maxi- mum drive current is dependent upon laser diode impedance and power supply input voltage. Please allow slightly longer during the Holiday Season.

When you are finished shopping for your several items, proceed to your “Purchase History”. When the input is at GND the modulation current is zero. There is an internal 20k ohm input impedance from this point to ground.

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Have you got any question or any customer service, please do not hesitate to contact us. Typical coaxial cable has a characteristic impedance of around 50 ohms. Report item – opens in a new window or tab.

HY (Hytek) – mA High Speed Laser Diode Driver | eet

Semiconductor laser module of dual in-line package type including coaxial high frequency connector. See all condition definitions – dioe in a new window or tab The third simulation FIGS. As will now be discussed in more detail, traditional driver circuits for laser diodes of this general type dissipate a great deal of power in the form of heat. There is an internal 20k ohm input impedance from this point to ground.


Before Buying Now or Bidding, please find out the shipping cost to your c oun try, however if your c oun try is not listed, please ask hytekk. Two programmable current sources allow user selectability of the bias and modulation currents.

Wait for the seller to send you a new invoiceand pay attention to any discounts they applied.

Please enter a number less than or equal to 5. If a returned item is found to be non-faulty, correct, and of the correct size, We will hytsk accept any costs incurred in returning the item. This item will be shipped through the Global Shipping Program and includes international tracking.

So, as the laser ages and light output falls, feedback current and the voltage at pin 3 will also fall thereby increasing current drive to the laser diode to main- tain a more constant light output.


If an input voltage V t applied across terminals k-k’ results in a current I t through a short circuit across terminals ‘, then the inverse is also true according to the theorem, i.

Maxi- mum drive current is dependent upon laser diode impedance and power supply input voltage.

In all of the simulations, a coaxial cable, referred to as “T-line” laaer the table and drawings, having a characteristic impedance of 50 ohms and a length of 1 meter is selected, and the laser diode is assumed to have a dynamic impedance of 3 ohms. Apparatus as defined in claim 3, wherein: Will usually ship within 2 business days of receiving cleared payment – opens in a new window or tab.


HY Datasheet pdf – Laser diode driver – Hytek Microsystems

Depending on the state of the data input signal introduced as an ECL emitter coupled logic signal on line ECL IN, current through the transistor pair Q3 either flows through the right-hand leg and the coaxial cable to the laser diode 10, or is bypassed through the left-hand leg of the transistor pair. Single ended ECL input Current output into As current feedback can vary widely among different models of laser diodes, from micro to milliamps, the voltage presented at pin 3 usually must dide ad- justed with a parallel external resistor to ground.

In the apparatus as disclosed by way of illustration, the semiconductor laser diode has a low dynamic impedance of approximately ohms in the “ON” state and gytek transmission line characteristic impedance and the backmatching impedance are each approximately 50 ohms.

This is the time from when your request of exchange or refund, plus our processing procedure. Feedback voltage will generally range between 0 and 1. The laser diode can be driven through a transmission line without the need for a matched impedance termination. Adjustable current to mA 5Volts.