HFCT-5962ATG Avago Technologies US Inc., HFCT-5962ATG Datasheet

Page 1

... Single Mode Laser Small Form Factor Transceivers for ATM, SONET OC-3 /SDH STM-1 (Part of the Avago Technologies METRAK family) Data Sheet Description The HFCT-5962TL/TG/NL/NG/ATL/ATG are high perfor- mance, cost effective modules for serial optical data com- munications applications specified for a signal rate of 155 Mb/s. They are designed to provide SONET/SDH compliant intermediate and long reach links at 155 Mb/s ...

Page 2

... Functional Description Receiver Section Design The receiver section for the HFCT-5962TL/TG/NL/NG/ ATL/ATG contains an InGaAs/InP photo detector and a preamplifier mounted in an optical subassembly. This optical subassembly is coupled to a postamp/decision circuit on a circuit board. The design of the optical as- sembly is such that it provides better than 14 dB Optical Return Loss (ORL). ...

Page 3

... Functional Description Transmitter Section Design A schematic diagram for the transmitter is shown in Figure 2. The HFCT-5962TL/TG/NL/NG/ATL/ATG incorpo- rates an FP laser as its optical source. All part numbers have been designed to be compliant with IEC 825 eye safety requirements under any single fault condition and CDRH under normal operating conditions. The op- tical output is controlled by a custom IC that detects the laser output via the monitor photodiode. This IC pro- ...

Page 4

Package The overall package concept for these devices consists of the following basic elements; two optical subassem- blies, two electrical subassemblies and the housing as illustrated in the block diagram in Figure 3. The package outline drawing and pin out are shown in Figures 4 and 5. The details of this package outline and pin out are compliant with the multisource definition of the DIP. The low profile of the Avago Technolo- gies transceiver design complies with the maximum height allowed for the LC connector over the entire length of the package. ...

Page 5

... FRONT VIEW G MODULE - NO EMI NOSE SHIELD DIMENSIONS IN MILLIMETERS (INCHES) DIMENSIONS SHOWN ARE NOMINAL. ALL DIMENSIONS MEET THE MAXIMUM PACKAGE OUTLINE DRAWING IN THE SFF MSA. Figure 4. HFCT-5962TL/TG/NL/NG/ATL/ATG Package Outline Drawing 5 ) TOP VIEW 48.5 ± 0.2 (1.91 ± 0.008) Ø ...

Page 6

Connection Diagram RX TX Mounting Studs/Solder Package Posts Grounding Tabs 2 0 PHOTO DETECTOR BIAS 1 RECEIVER SIGNAL 9 LASER DIODE OPTICAL POWER MONITOR - GROUND 1 POSITIVE END RECEIVER SIGNAL 8 LASER DIODE OPTICAL POWER MONITOR ...

Page 7

... Electrical and Mechanical Interface Recommended Circuit Figures 6a and 6b show recommended dc and ac coupled circuits for deploying the Avago Technologies transceivers in +3.3 V systems. Data Line Interconnections Avago Technologies’ HFCT-5962TL/TG/NL/NG/ATL/ATG fiber-optic transceivers are designed to couple to +3.3 V PECL signals. The transmitter driver circuit regulates the output optical power. The regulated light output will maintain a constant output optical power provided the data pattern is reasonably balanced in duty cycle. If the ...

Page 8

... Note C: THE BIAS RESISTOR FOR VpdR SHOULD NOT EXCEED 200 Ω AND C5 ARE OPTIONAL BYPASS CAPACITORS FOR ADDITIONAL LOW FREQUENCY NOISE FILTERING. Figure 6b. Recommended ac coupled interface circuit The HFCT-5962TL/TG/NL/NG/ATL/ATG have a transmit disable function which is a single-ended +3.3 V TTL input which is dc-coupled to pin 13. In addition these devices offer the designer the option of monitoring the laser di- ode bias current and the laser diode optical power ...

Page 9

... Figure 7 with the addition of ANSI Y14.5M compliant di- mensioning to be used as a guide in the mechanical layout of your circuit board. Figure 8 shows the front panel dimen- sions associated with such a layout. Eye Safety Circuit For an optical transmitter device to be eye-safe in the event of a single fault failure, the transmitter must either maintain eye-safe operation or be disabled. The HFCT-5962TL/TG/NL/NG/ATL/ATG is intrinsically eye safe and does not require shut down circuitry. 9 3.56 (0.14 Ø 1.4 ±0.1 (0.055 ±0.004 Ø 1.4 ±0.1 (0.055 ± ...

Page 10

... FIGURE DESCRIBES THE RECOMMENDED FRONT PANEL OPENING FOR SFF TRANSCEIVER. 2. SFF TRANSCEIVER PLACED AT 15.24 mm (0.6) MIN. SPACING. Figure 8. Recommended Panel Mounting 10 Avago Technologies’ OC-3 LC transceivers (HFCT-5962TL/ TG/NL/NG/ATL/ATG) have nose shields which provide a convenient chassis connection to the nose of the transceiv- er. This nose shield improves system EMI performance by effectively closing off the LC aperture. Localized shielding is also improved by tying the four metal housing package grounding tabs to signal ground on the PCB ...

Page 11

... Recommended Solder fluxes Solder fluxes used with the HFCT-5962TL/TG/NL/NG/ ATL/ATG should be water-soluble, organic fluxes. Rec- ommended solder fluxes include Lonco 3355-11 from London Chemical West, Inc. of Burbank, CA, and 100 Flux from Alpha-Metals of Jersey City, NJ ...

Page 12

... CC Performance Class 1 (>500 V). Tested contact discharge. Margins are dependent on customer board and chassis designs. Typically show no measurable effect from a 10 V/m field swept from 27 to 1000 MHz applied to the transceiver with- out a chassis enclosure. Accession Number: HFCT-5962NL/NG ) 9521220-46 HFCT-5962TL/TG/ATL/ATG ) 9521220-47 License Number: HFCT-5962NL/NG ) 933/510116/01 26 July 2001 HFCT-5962TL/TG/ATL/ATG ) 933/510116/02 31 July 2001 UL File Number: E173874, 01SC14051 ...

Page 13

... Connection of the devices to a non-approved optical source, operating above the recommended absolute maximum conditions or operating the HFCT-5962TL/ TG/NL/NG/ATL/ATG in a manner inconsistent with its design and function may result in hazardous radiation exposure and may be considered an act of modifying or manufacturing a laser product ...

Page 14

... Absolute Maximum Ratings (HFCT-5962TL/TG/NL/NG/ATL/ATG) Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each parame- ter in isolation, all other parameters having values within the recommended operating conditions. It should not be assumed that limiting values of more than one parameter can be applied to the product at the same time. Exposure to the absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Storage Temperature Supply Voltage Data Input Voltage Data Output Current Relative Humidity Recommended Operating Conditions (HFCT-5962TL/TG/NL/NG/ATL/ATG) Parameter Ambient Operating Temperature HFCT-5962TL/TG HFCT-5962NL/NG HFCT-5962ATL/ATG Supply Voltage Power Supply Noise Rejection Transmitter Differential Input Voltage ...

Page 15

... A Parameter Supply Current Power Dissipation Data Input Voltage Swing (single-ended) Transmitter Differential Data Input Current - Low I Transmitter Differential Data Input Current - High I Laser Diode Bias Monitor Voltage Power Monitor Voltage Receiver Electrical Characteristics HFCT-5962TL/TG °C to +70 ° HFCT-5962NL/NG °C to +70 ° HFCT-5962ATL/ATG -40 °C to +85 ° Parameter Supply Current Power Dissipation Data Output Voltage Swing (single-ended) Data Output Rise Time Data Output Fall Time Signal Detect Output Voltage - Low Signal Detect Output Voltage - High ...

Page 16

... Center Wavelength Spectral Width - rms Optical Rise Time Optical Fall Time Extinction Ratio Output Optical Eye Receiver Optical Characteristics HFCT-5962TL/TG °C to +70 ° HFCT-5962NL/NG °C to +70 ° HFCT-5962ATL/ATG -40 °C to +85 ° Parameter Receiver Sensitivity HFCT-5962TL/TG/ATL/ATG Receiver Sensitivity HFCT-5962NL/NG Receiver Overload Input Operating Wavelength Signal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis Notes: 1. The output power is coupled into single-mode fiber. Minimum output optical level is at end of life. 2. The relationship between FWHM and RMS values for spectral width can be derived from the assumption of a Gaussian shaped spectrum which results in RMS = FWHM/2 ...

Page 17

... FP Laser (Temperature range -5 °C to +70 °C, HFCT-5962NL = connector. HFCT-5962NG = connector. 1300 nm FP Laser (Temperature range -40 °C to +85 °C, HFCT-5962ATL = connector. HFCT-5962ATG = connector, Related Products Other single mode OC-3 transceivers in this product family are:- HFCT-5961TL/TG/NL/NG/ATL/ATG = connector. HFCT-5963TL/TG/NL/NG/ATL/ATG = connector, HFCT-5964TL/TG/NL/NG/ATL/ATG = connector, Class 1 Laser Product: This product conforms to the applicable requirements of 21 CFR 1040 at the date of ...