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LG1625AXF Datasheet(PDF) 1 Page - Agere Systems |
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LG1625AXF Datasheet(HTML) 1 Page - Agere Systems |
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1 / 12 page  Data Sheet June 1999 LG1625AXF Laser Driver Features s High data-rate laser diode/LED driver s Adjustable output current s Operation up to 3 Gbits/s s Single –5.2 V power supply s 90 ps rise and fall times Applications s SONET/SDH transmission systems s SONET/SDH test equipment s Optical transmitters Description The LG1625AXF is a gallium-arsenide (GaAs) laser diode driver to be used with direct modulated laser diodes in high-speed nonreturn-to-zero (NRZ) trans- mission systems. The device is made in a high-per- formance 0.9 µm gate GaAs heterojunction FET technology that utilizes high-density MIM capacitors, airbridge interconnect, and NiCr film precision resis- tors. The device contains three cascaded stages, oper- ates with a single –5.2 V power supply and accepts ECL level inputs. Voltages control the modulated out- put current and laser prebias current. The LG1625AXF is available in a 24-lead hermetic, gull- wing package. A test fixture (TF1006A) with SMA connectors is available to allow quick evaluation of the LG1625AXF. 5-7865(F) Figure 1. Functional Diagram VIN MK VSS1 VTH VSS2 GND IOUT MK VPRE VSS3 VMOD LG1625AXF |
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