AFCT-5815xZ 155 Mb/s Single Mode Fiber Optic Transceiver for ATM, SONET OC-3/SDH STM-1 Data Sheet Description General The AFCT-5815xZ transceiver is a high performance, cost effective module for serial optical data communications applications specified for a data rate of 155 Mb/s. It is designed to provide a SONET/SDH compliant link for long reach links operating at +3.3 V or +5.0 V input voltage. Features Transmitter Section The transmitter section of the AFCT-5815xZ consists of a 1300 nm InGaAsP laser in an eyesafe optical subassembly (OSA) which mates to the fiber cable. The laser OSA is driven by a custom IC which converts differential input PECL logic signals, ECL referenced (shifted) to +3.3 V or +5 V supply, into an analog laser drive current. Receiver Section The receiver utilizes an InGaAs PIN photodiode mounted together with a transimpedance preamplifier IC in an OSA. This OSA is connected to a circuit providing post- amplification quantization, and optical signal detection. RoHS compliant Long reach SONET OC-3 SDH STM1 (L1.1) compliant Multisourced 1 x 9 pin configuration Interchangeable with LED multisourced 1 x 9 transceivers Unconditionally eyesafe laser IEC 825/CDRH Class 1 compliant Two Temperature Ranges: 0°C to +70°C AFCT-5815BZ/DZ -40°C to +85°C AFCT-5815AZ/CZ Single +3.3 V or +5.0 V power supply operation Wave solder and aqueous wash process compatible Considerable EMI margin to FCC Class B Applications ATM 155 Mb/s links for LAN backbone switches and routers ATM 155 Mb/s links for WAN core, edge and access switches and routers ATM 155 Mb/s links for add/drop multiplexers and demultiplexers SONET OC-3/SDH STM-1 interconnections ELECTRICAL SUBASSEMBLY DATA DATA POST AMPLIFIER IC DATA PREAMPLIFIER IC OPTICAL SUBASSEMBLIES SIGNAL DETECT DATA PIN PHOTODIODE LASER DRIVER IC DUPLEX SC RECEPTACLE LASER TOP VIEW Figure 1. Block Diagram Receiver Signal Detect Applications Information Signal Detect is a basic fiber failure indicator. This is a single-ended PECL output. As the input optical power is decreased, Signal Detect will switch from high to low (deassert point) somewhere between sensitivity and the no light input level. As the input optical power is increased from very low levels, Signal Detect will switch back from low to high (assert point). The assert level will be at least 0.5 dB higher than the deassert level. Typical BER Performance of Receiver versus Input Optical Power Level Transceiver Specified for Wide Temperature Range Operation The AFCT-5815xZ transceiver can be operated at Bit-Error-Rate conditions other than the required BER = 1 x 10-10 of the ATM Forum 155.52 Mb/s Physical Layer Standard. The typical trade-off of BER versus Relative Input Optical Power is shown in Figure 2. The Relative Input Optical Power in dB is referenced to the actual sensitivity of the device. For BER conditions better than 1 x 10-10, more input signal is needed (+dB). The AFCT-5815xZ is specified for operation over extended temperature range of -40° to +85°C. Other Members of Avago Technologies SC Duplex 155 Mb/s Product Family • HFCT-5801, 1300 nm single mode transceiver for links up to 15 km. The part is based on the 2 x 9 industry standard package and has laser bias, optical power monitor and transmitter disable functions. 2 10 -3 BIT ERROR RATIO Characterization of the parts has been performed over the ambient operating temperature range in an airflow of 2 m/s. 10 -2 10 -4 10 -5 10 -6 10 -7 10 -8 10 -9 10 -10 10 -11 10 -12 10 -13 10 -14 10 -15 LINEAR EXTRAPOLATION OF 10 -4 THROUGH 10 -7 DATA BASED ON ACTUAL DATA -5 -4 -3 -2 -1 0 1 2 3 Figure 2. Relative Input Optical Power - dBm. Avg. Recommended Circuit Schematic In order to ensure proper functionality of the AFCT-5815xZ a recommended circuit is provided in Figure 3. When designing the circuit interface, there are a few fundamental guidelines to follow. For example, in the Recommended Circuit Schematic figure the differential data lines should be treated as 50 ohm Microstrip or stripline transmission lines. This will help to minimize the parasitic inductance and capacitance effects. Proper termination of the differential data signals will prevent reflections and ringing which would compromise the signal fidelity and generate unwanted electrical noise. Locate termination at the received signal end of the transmission line. The length of these lines should be kept short and of equal length. For the high speed signal lines, differential signals should be used, not single-ended signals, and these differential signals need to be loaded symmetrically to prevent unbalanced currents from flowing which will cause distortion in the signal. using the recommended, separate filter circuits shown in Figure 3 for the transmitter and receiver sections. These filter circuits suppress VCC noise over a broad frequency range, this prevents receiver sensitivity degradation due to VCC noise. It is recommended that surface-mount components be used. Use tantalum capacitors for the 10 μF capacitors and monolithic, ceramic bypass capacitors for the 0.1 μF capacitors. Also, it is recommended that a surface- mount coil inductor of 3.3 μH be used. Ferrite beads can be used to replace the coil inductors when using quieter VCC supplies, but a coil inductor is recommended over a ferrite bead. All power supply components need to be placed physically next to the VCC pins of the receiver and transmitter. Use a good, uniform ground plane with a minimum number of holes to provide a low-inductance ground current return for the power supply currents. In addition to these recommendations, Avago Technologies Application Engineering staff is available for consulting on best layout practices with various vendors mux/demux, clock generator and clock recovery circuits. Avago Technologies has participated in several reference design studies and is prepared to share the findings of these studies with interested customers. Contact your local Avago Technologies sales representative to arrange for this service. Maintain a solid, low inductance ground plane for returning signal currents to the power supply. Multilayer plane printed circuit board is best for distribution of VCC, returning ground currents, forming transmission lines and shielding, Also, it is important to suppress noise from influencing the fiber-optic transceiver performance, especially the receiver circuit. Proper power supply filtering of VCC for this transceiver is accomplished by NO INTERNAL CONNECTION NO INTERNAL CONNECTION TOP VIEW Rx V EER 1 RD 2 Rx V CCR 5 SD 4 RD 3 Tx V CCT 6 Tx V EET 9 TD 8 TD 7 C2 C8 C1 C7 V CC L1 V CC TERMINATE AT PHY DEVICE INPUTS R5 C3 R7 R2 R1 RD RD SD Figure 3. Recommended Circuit Schematic R9 V CC C5 R4 TERMINATION AT TRANSCEIVER INPUTS R8 R10 R3 C4 V cc FILTER AT V cc PINS TRANSCEIVER C6 R6 3 L2 TD TD NOTES: THE SPLIT-LOAD TERMINATIONS FOR PECL SIGNALS NEED TO BE LOCATED AT THE INPUT OF DEVICES RECEIVING THOSE PECL SIGNALS. RECOMMEND 4-LAYER PRINTED CIRCUIT BOARD WITH 50 MICROSTRIP SIGNAL PATHS BE USED. R1 = R4 = R6 = R8 = R10 = 130 FOR +5.0V OPERATION, 82 FOR +3.3V OPERATION. R2 = R3 = R5 = R7 = R9 = 82 FOR +5.0V OPERATION, 130 FOR +3.3V OPERATION. C1 = C2 = 10 μF C3 = C4 = C7 = C8 = 100 nF C5 = C6 = 0.1 μF L1 = L2 = 3.3 μH COIL OR FERRITE INDUCTOR. Evaluation Circuit Boards Evaluation circuit boards are available from Avago Technologies Application Engineering staff. Contact your local Avago Technologies sales representative to arrange for access to one if needed. Recommended Solder and Wash Process The AFCT-5815xZ is compatible with industry standard wave or hand solder processes. A drying cycle must be completed after wash process to remove all moisture from the module. AFCT-5815xZ Process Plug The AFCT-5815xZ transceiver is supplied with a process plug for protection of the optical ports with the Duplex SC connector receptacle. This process plug prevents contamination during wave solder and aqueous rinse as well as during handling, shipping or storage. Each process plug can only be used once during processing, although with subsequent use, it can be used as a dust cover. It is made of high-temperature, molded, sealing material that will withstand +85°C and a rinse pressure of 110 lb/in2. 20.32 (0.800) TOP VIEW Figure 4. Recommended Board Layout Hole Pattern 4 Solder fluxes used with the AFCT-5815xZ fiber-optic transceiver should be water-soluble, organic solder fluxes. Some recommended solder fluxes are Lonco 3355-11 from London Chemical West, Inc. of Burbank, CA, and 100 Flux from Alpha Metals of Jersey City, NJ. Recommended cleaning and degreasing chemicals for the AFCT-5815xZ are alcohol’s (methyl, isopropyl, isobutyl), aliphatics (hexane, heptane) and other chemicals, such as soap solution or naphtha. Do not use partially halogenated hydrocarbons for cleaning/degreasing. Examples of chemicals to avoid are 1.1.1. trichloroethane, ketones (such as MEK), acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride or N-methylpyrrolidone. 2 x Ø 1.9 ± 0.1 (0.075 ± 0.004) 9 x Ø 0.8 ± 0.1 (0.032 ± 0.004) 20.32 (0.800) 2.54 (0.100) Recommended Solder Fluxes and Cleaning/Degreasing Chemicals DIMENSIONS ARE IN MILLIMETERS (INCHES) AVAGO TX MAX 39.6 . (1.56) ( KEY: YYWW = DATE CODE XXXX-XXXX = AFCT-5815 ZZZZ = 1300 nm 12.7 (0.50) AREA RESERVED FOR PROCESS PLUG 25.4 MAX. (1.00) +0.1 0.25 -0.05 +0.004 0.010 -0.002 XXXX-XXXX ZZZZZ LASER PROD 21CFR(J) CLASS 1 COUNTRY OF ORIGIN YYWW RX 12.7 ± 0.3 (0.50 ± 0.012) SLOT WIDTH SLOT DEPTH 2.5 (0.10) 2.0 ± 0.1 (0.079 ± 0.004) ) 9.8 MAX. (0.386) 0.51 (0.020) 3.3 ± 0.38 (0.130 ± 0.015) 9xØ 23.8 (0.937) ( +0.25 0.46 -0.05 +0.010 0.018 -0.002 20.32 (0.800) 2xØ 20.32 ± 0.2 (0.800 ± 0.008) ) 8 x 2.54 (0.100) 1.3 (0.051) DIMENSIONS ARE IN MILLIMETERS (INCHES). TOLERANCES: ±0.1 mm UNLESS OTHERWISE SPECIFIED. Figure 5. Package Outline Drawing and Pinout 5 15.8 ± 0.15 (0.622 ± 0.006) +0.25 1.27 -0.05 2xØ +0.010 0.050 -0.002 ( 20.32 ± 0.2 (0.800 ± 0.008) ) Regulatory Compliance Electromagnetic Interference (EMI) The AFCT-5815xZ is intended to enable commercial system designers to develop equipment that complies with the various regulations governing certification of Information Technology Equipment. See the Regulatory Compliance Table 1 for details. Additional information is available from your Avago Technologies sales representative. Most equipment designs utilizing these high-speed transceivers from Avago Technologies will be required to meet the requirements of FCC in the United States, CENELEC EN55022 (CISPR 22) in Europe and VCCI in Japan. Electrostatic Discharge (ESD) There are two design cases in which immunity to ESD damage is important. The first case is during handling of the transceiver prior to mounting it on the circuit board. It is important to use normal ESD handling precautions for ESD sensitive devices. These precautions include using grounded wrist straps, work benches and floor mats in ESD controlled areas. The second case to consider is static discharges to the exterior of the equipment chassis containing the transceiver parts. To the extent that the duplex SC connector is exposed to the outside of the equipment chassis it may be subject to whatever ESD system level test criteria that the equipment is intended to meet. 6 The AFCT-5815xZ has been characterized without a chassis enclosure to demonstrate the robustness of the part’s integral shielding. Performance of a system containing these transceivers within a well designed chassis is expected to be better than the results of these tests with no chassis enclosure. Immunity Equipment utilizing these AFCT-5815xZ transceivers will be subject to radio-frequency electromagnetic fields in some environments. These transceivers, with their integral shields, have been characterized without the benefit of a normal equipment chassis enclosure and the results are reported below. Performance of a system containing these transceivers within a well designed chassis is expected to be better than the results of these tests without a chassis enclosure. Table 1. Regulatory Compliance - Typical Performance Feature Test Method Performance Electrostatic Discharge (ESD) to the Electrical Pins MII-STD-883F Method 3015.7 Class 1 (>500 V) - Human Body Model Electrostatic Discharge (ESD) to the Duplex SC Receptacle Variation of IEC 61000-4-2 Air discharge 15 kV Electromagnetic Interference (EMI) FCC Class B Typically provide greater than 11 dB margin below 1 GHz to FCC Class B when tested in a GTEM with the transceiver mounted to a circuit card without a chassis enclosure at frequencies up to 1 GHz. Margins above 1 GHz dependent on customer board and chassis designs. Immunity Variation of IEC 801-3 Typically show no measurable effect from a 10 V/m field swept from 27 MHz to 1 GHz applied to the transceiver without a chassis enclosure. Eye Safety FDA CDRH 21-CFR 1040 Class 1 Accession Number: 9521220-135 IEC 60825 - 1 Amendment 2 2001 -01 TUV Licence Number: 933/21203530/17 Underwriters Laboratories and Canadian Standards Association Joint Component Recognition for Information Technology Equipment Including Electrical UL File#: E173874 Component Recognition Performance Specifications Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause catastrophic damage to the device. Limits apply to each parameter 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 Symbol Minimum Maximum Units Storage Temperature TS -40 +85 °C Lead Soldering Temperature/Time - - +260/10 °C/s Input Voltage - GND VCC V Power Supply Voltage - 0 6 V Parameter Symbol Minimum Maximum Units Notes Operating Environment Notes Power Supply Voltage VCC +3.1 +5.25 V Ambient Operating Temperature - AFCT-5815AZ/CZ TOP -40 +85 °C 1 Ambient Operating Temperature - AFCT-5815BZ/DZ TOP 0 +70 °C 1 7 Transmitter Section (Ambient Operating Temperature, VCC = 3.1 V to 5.25 V) Parameter Symbol Minimum Typical Maximum Units Notes Output Center Wavelength lce 1261 - 1360 Output Spectral Width (RMS) Dl - - 4.0 nm Average Optical Output Power PO -5 - 0 dBm Extinction Ratio ER 10 - - dB Power Supply Current ICC - 50 140 mA Output Eye Compliant with Telcordia TR-NWT-000253 and ITU recommendation G.957 Optical Rise Time tR - - 2 ns 4 Optical Fall Time tF - - 2 ns 4 Data Input Current - Low IIL -350 - - μA Data Input Current - High IIH - - 350 μA Data Input Voltage - Low VIL - VCC -2.0 - -1.475 V 5 Data Input Voltage - High VIH - VCC -1.165 - -0.74 V 5 2 3 Notes: 1. 2 m/s air flow required. 2. Output power is power coupled into a single mode fiber. 3. The power supply current varies with temperature. Maximum current is specified at VCC = Maximum @ maximum temperature (not including terminations) and end of life. Typical power supply current at +25°C and +3.3 V or +5.0 V supply. 4. 10% - 90% Values. Maximum tR, tF times tested against eye mask. 5. These inputs are compatible with 10 K, 10 KH and 100 K PECL outputs. Receiver Section (Ambient Operating Temperature, VCC = 3.1 V to 5.25 V) Parameter Symbol Minimum Typical Maximum Units Notes Receiver Sensitivity - - - -34 dBm 6 Maximum Input Power - -7 - - dBm 6 Power Supply Current ICC - 55 100 mA 7 Signal Detect - Deasserted - -45 - -34 dBm Signal Detect - Hysteresis - 0.5 - 4 dB Signal Detect Assert Time (off to on) AS_Max - - 100 μs Signal Detect Deassert Time (on to off ) ANS_Max - - 350 μs Signal Detect Output Voltage - Low VOL - VCC -1.92 - -1.45 V 8 Signal Detect Output Voltage - High VOH - VCC -1.1 - -0.85 V 8 Data Output Voltage - Low VOL - VCC -2.0 - -1.45 V 8 Data Output Voltage - High VOH - VCC -1.1 - -0.85 V 8 Data Output Rise Time tr - - 2.2 ns 9 Data Output Fall Time tf - - 2.2 ns 9 Notes 6. Sensitivity and maximum input power levels for a 223-1 PRBS with 72 ones and 72 zeros inserted. (ITU recommendation G.958). 7. The current includes capacitively coupled 50 Ohm terminations. 8. These outputs are compatible with 10 K, 10 KH and 100 K PECL outputs. 9. 20 - 80% levels. 8 Table 2. Pin Out Table Pin Symbol Functional Description Mounting Studs The mounting studs are provided for transceiver mechanical attachment to the circuit board. They are embedded in the housing and are not connected to the transceiver internal circuit. They should be soldered into plated-through holes on the printed circuit board. 1 VEER Receiver Signal Ground Directly connect this pin to receiver signal ground plane. 2 RD+ Receiver Data Out Terminate this high-speed, differential, PECL output with standard PECL techniques at the follow-on device input pin. 3 RD- Receiver Data Out Bar Terminate this high-speed, differential, PECL output with standard PECL techniques at the follow-on device input pin. 4 SD Signal Detect Normal input optical levels to the receiver result in a logic “1” output.Low input optical levels to the receiver result in a fault indication shown by a logic “0” output. Signal Detect is a single-ended, PECL output. This output will operate with 270 termination resistor to VEE to achieve PECL output levels. This Signal Detect output can be used to drive a PECL input on an upstream circuit, such as, Signal Detect input and Loss of Signal-bar input. 5 VCCR Receiver Power Supply Provide +3.3 or +5.0 V dc via the recommended receiver power supply filter circuit.Locate the power supply filter circuit as close as possible to the VCCR pin. 6 VCCT Transmitter Power Supply Provide +3.3 or +5.0 V dc via the recommended transmitter power supply filter circuit.Locate the power supply filter circuit as close as possible to the VCCT pin. 7 TD- Transmitter Data In Bar Terminate this high-speed, differential Transmitter Data input with standard PECL techniques at the transmitter input pin. 8 TD+ Transmitter Data In Terminate this high-speed, differential Transmitter Data input with standard PECL techniques at the transmitter input pin. 9 VEET Transmitter Signal Ground Directly connect this pin to the transmitter signal ground plane. 9 Order Information: Temperature Range 0°C to +70°C AFCT-5815BZ AFCT-5815DZ Black Case Blue Case Temperature Range -40°C to +85°C AFCT-5815AZ AFCT-5815CZ Black Case Blue Case Class 1 Laser Product: This product conforms to the applicable requirements of 21 CFR 1040 at the date of manufacture Date of Manufacture: Avago Technologies Inc., No 1 Yishun Ave 7, Singapore Handling Precautions 1. 2. The AFCT-5818xZ can be damaged by current surges or overvoltage. Power supply transient precautions should be taken. Normal handling precautions for electrostatic sensitive devices should be taken. For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0035EN AV02-2960EN - May 5, 2011