OC-3/STM-1 Receiver with Clock Recovery SRC03 Series Product Description The SRC03 is a Receiver Module with internal clock,recovery designed to meet or exceed the SONET/SDH optical interface requirements at OC-3/ STM-1 (155 Mb/s) data rate. Highly reliable InGaAs/InP PIN photodiodes are used to cover the entire long wavelength range from 1100 nm to 1550 nm. The receiver features a low noise GaAs transimpedance IC with AGC capability to provide an extremely wide dynamic range and high sensitivity. A Phase Lock Loop (PLL) circuit is included to perform the clock recovery function and resampling of the data. The SRC03 receiver can be operated with dual +5 V and - 5 V supply, or single +5 V supply. The DATA & CLOCK interface signals are differential PECL while the SIGNAL DETECT outputs have TTL interface. The SRC03 module operate over an operating temperature range of 0°C to +70°C (“H” option) or -40°C to +85°C (“ ” option). They are housed in a 20-pin dual-in-line metal package with integral ST, FC or SC connector receptacle or 50 µm multimode fiber pigtail. The fiber pigtail is terminated with ST, FC or SC connector. Related OC-3/STM-1 transmitters & receivers STX-03-LED: 20-pin LED transmitter STX-03: 20-pin laser transmitter SRX-03: 20-pin receiver without clock recovery SRC-03-S: 24-pin receiver with clock recovery Features Full compliance with SONET/SDH OC-3/ STM-1 specifications Long Reach and Intermediate Reach Phase-Lock-Loop (PLL) Clock Recovery - 40°C to +85°C Operating Temperature (option “I”) Multi-sourced 20-pin DIP metal package FC, ST, SC-connectorized fiber pigtails or Integral FC, SC or ST connector receptacle PECL DATA & CLOCK interface TTL SIGNAL DETECT interface Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Operating & Storage Humidity Supply Voltage Lead Soldering Temperature & Time “I” option “H” option Symbol Minimum Maximum Units TST - 40 + 85 °C - 40 + 85 0 + 70 - - 85 % VCC 0 + 6.0 V - - TOP °C 260°C, 10 sec R5.2008.06.18 Oplink Communications, Inc. SRC03 Series Receiver Electrical Interface (Over Operating Case Temperature) Parameter Symbol Minimum Typical Maximum Units VCC 4.75 5.0 5.5 V VPD - 10.0 - 5.0 - 2.0 V Supply Current ICC - 85 120 mA Output HIGH Voltage (DATA & CLOCK) VOH VCC - 1.20 - VCC - 0.70 V Output LOW Voltage (DATA & CLOCK) VOL VCC - 2.0 - VCC - 1.70 V Output HIGH Voltage (SIGNAL DETECT) VOH 2.7 - VCC V Output LOW Voltage (SIGNAL DETECT) VOL 0 - 0.5 V Supply Voltage 1 1 For +5V & - 5V dual supply: VCC = +5V, CASE = GND = 0V and VPD = - 5V. VPD is the photodiode supply voltage only. IVPD can be used for monitoring the signal photocurrent. For +5V single supply: VCC = +5V, VPD = CASE = GND = 0V. Receiver Performance Characteristics (Over Operating Case Temperature) Parameter Symbol Minimum Typical Maximum Units B 155 155.52 156 Mb/s Pmin - 34.0 - 36.0 - dBm - 6.0 0 - - 3.0 0 - Data Rate Receiver Sensitivity (10 BER) -10 1 Single Supply Maximum Input Optical Power (10-10 BER) 1 Pmax Dual Supply Signal Detect Thresholds Increasing Light Input Psd+ - - - 34.0 dBm Decreasing Light Input Psd- - 45.0 - - dBm - 0.5 - dB λ 1100 - 1600 nm CLKJ - - 0.01 UIrms Signal Detect Hysteresis Wavelength of Operation Output Clock Jitter Jitter Tolerance & Transfer Function 1 dBm compliant with ITU Recommendation G.958 Specified in Average Optical Input Power and measured at 1300 nm wavelength with 223-1 PRBS. Interface Circuit 1 µH coil or ferrite inductor 10 0.01 11 SIGNAL DETECT+ (TTL LEVELS) SRC-03 82 82 0.1 82 DATA- 9 (PECL LEVELS) CLOCK+ 4 CLOCK- 5 10 (VPD) 10 DATA+ 7 14 1 µH coil or ferrite inductor - 5 volt 82 12 SIGNAL DETECT - +5 volt + (PECL LEVELS) 10 For single supply operation, pin 10 is grounded. 10 0.01 1, 13, 20 6, 8, 15 130 130 130 130 RESISTOR VALUES ARE IN OHM, CAPACITOR VALUES ARE IN µF UNLESS OTHERWISE INDICATED Oplink Communications, Inc. 2 R5.2008.06.18 SRC03 Series Application Notes Receiver Circuit: The receiver converts the incident optical power to a photocurrent via a high performance PIN photodiode. The photocurrent is converted to a voltage signal by a transimpedance amplifier. This signal is then amplified by additional gain stages and processed through a shaping filter and a comparator to generate the data to the clock recovery circuit. The clock recovery circuit uses a Phase Lock Loop (PLL) to recover the clock from the data and resamples the data to generate clean and reshaped differential DATAoutputs. Also provided are differential recovered CLOCK outputs. Both differential DATA+ and DATA- as well as CLOCK+ and CLOCK- outputs are open emitter PECL levels requiring termination (50 ohms to VCC - 2 volts or 510 ohms to GND is recommended). For optimum performance, both outputs should be terminated in the same manner, even if only one is used. The Signal Detect circuit monitors the level of the incoming optical signal and generates a logic LOW (TTL) signal when insufficient photocurrent is produced. Interface Circuit: The power supply line should be wellfiltered. The power supply should be bypassed by 0.01 or 0.1 µF ceramic chip capacitors placed as close to the receiver module as possible. If the receiver outputs drive long traces or multiple loads, the use of an ECL buffer gate to isolate the receiver from transmission line reflections is recommended. Pin Assignments (Top View) DATA & CLOCK Timing Diagram CASE 1 20 CASE N/C 2 19 N/C N/C 3 18 N/C CLOCK + 4 17 N/C CLOCK - 5 16 N/C GND 6 15 GND DATA+ 7 14 SIGNAL DETECT - GND 8 13 CASE DATA - 9 12 SIGNAL DETECT+ 10 11 VCC (+5 V) N/C Set-up 3.0 < tS < 3.5 ns Hold 3.0 < tH < 3.3 ns DATA CLOCK N/C: No internal connection All CASE pins should be grounded Pigtail Package The pigtail length from the package edge is 1.0 meter minimum, 1.1 meter typical. Dimension in inches Oplink Communications, Inc. 3 R5.2008.06.18 SRC03 Series SC-receptacled Package Dimension in inches 46335 Landing Pkwy Fremont, CA 94538 Tel: (510) 933-7200 Fax: (510) 933-7300 Email: [email protected] • www.oplink.com FC-receptacled Package Laser Safety: All transceivers are Class I Laser products per FDA/CDRH and IEC-60825 standards. They must be operated under specified operating conditions. Dimension in inches ST Receptacle Package Oplink Communications, Inc. DATE OF MANUFACTURE: This product complies with 21 CFR 1040.10 and 1040.11 Meets Class I Laser Safety Requirements Dimension in inches Ordering Information SRC 8 Supply Voltage RX only 5V= 8 0 3 Receivers X R 1 0 0 0 Wavelength Range Temperature Range Connector Type & Option 1100~1600nm PIN -40 ~85˚C= I 0~70˚C= H Pigtail FC, SD-TTL = PA Pigtail ST, SD-TTL = PB Pigtail SC, SD-TTL = P5 Pigtail FC, SD-PECL = PC Pigtail ST, SD-PECL = PD Pigtail SC, SD-PECL = P4 Oplink Communications, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Communications, Inc. is believed to be accurate and reliable. However, no responsibility is assumed by Oplink Communications, Inc. for its use nor for any infringements of third parties, which may result from its use. No license is granted by implication or otherwise under any patent right of Oplink Communications, Inc. R5.2008.06.18 © 2008, Oplink Communications, Inc. 4