SRX48 OPLINK | Alldatasheet
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R5.2008.04.30
Oplink Communications, Inc. Receiver Performance Characteristics SRX48 (Over Operating Case Temperature.) Parameter Symbol Minimum Typical Maximum Units Data Rate B 0.1 2.488 3.0 Gb/s Receiver Sensitivity (10-10 BER) 1 Short & Intermediate Reach Pmin - 20.0 - 24.0 - dBm Long Reach - 28.0 - 32.0 - Maximum Input Optical Power (10-10 BER) 1 Short Reach (SR) Pmax - 3.0 - 1.0 - dBmIntermediate Reach (IR) 0 2.0 - Long Reach (LR) - 8.0 - - 6.0 Signal Detect Thresholds SR & IR Increasing Light Input Psd+ - - - 20.0 dBm Decreasing Light Input Psd- - 35.0 - - LR Increasing Light Input Psd+ - - - 28.0 dBm Decreasing Light Input Psd- - 42.0 - - Signal Detect Hysteresis - 0.5 1.0 - dB Optical Power Monitor LR (P in from -28 dBm to -17 dBm) VPM - 6.4 - mV/µW IR & SR (Pin from -20 dBm to 0 dBm) IPM - 0.8 - µA/µW Wavelength of Operation λ 1100 - 1600 nm 1 Specified in Average Optical Input Power and measured at 2.48832 Gb/s and 1300 nm or 1550 nm wavelength with 223-1 PRBS. Receiver Electrical Interface Parameter Symbol Minimum Typical Maximum Units Supply Voltage VCCA’ VCCD 4.75 5.0 5.25 V Supply Current SR & IR I - 195 250 mA LR - 225 275 Output Voltage Swing (DATA) VPP 0.4 0.5 1.0 V Output HIGH Voltage (SIGNAL DETECT) VOH 2.7 - VCC V Output LOW Voltage (SIGNAL DETECT) VOL 0 - 0.7 V 2 R5.2008.04.30 Related OC-48/STM-16 Transceiver & Receiver Modules STX-48 : Transmitter Module (24-pin DIP) SRC-48 : Receiver Module with Clock Recovery (24-pin DIP) DTR-2488-SM : Transceiver without Clock Recovery (industry standard 1x9 package) DTR-2488-SM2 : Transceiver without Clock Recovery (industry standard 2x9 package) DTC-48 : Transceiver with Clock Recovery (industry standard 2x9 package)
Oplink Communications, Inc. Application Notes SHORT & INTERMEDIATE REACH LONG REACH PD External Monitor Resistor (3 Kohm recommended) PD Current Monitor PM+ VCC APD 1 KΩ 10 KΩ 10 KΩ APD Bias Supply PM+ PM- 8 4 - X R S8 4 - X R S 50 ohm line 50 ohm lineSRX-48 4,5,6,7,11,12,13 14,15,16,19,21 DATA+ 1 µH coil or ferrite bead (<0.2 ohm series resistance) DATA- SIGNAL DETECT 17,18 20 3+10 0.01 for SR & IR only +5V PM- to 50 ohm load to 50 ohm load +10 0.01 0.01 +5V +100 +10 for LR only The AC coupling capacitor is typically 0.022 µF for 2.48 Gb/s. If operation at lower data rates is required, a parrallel combination of 0.022 µF & 0.22 µF (or larger) is recommended Interface Circuit SRX48 R5.2008.04.303 The receiver converts the incident optical power to a photocurrent via a high performance P-I-N photodiode (Short and Intermediate Reach version) or an avalanche photodiode (Long Reach version). For the Short and Intermediate Reach version, the photocurrent can be monitored via the voltage drop across an external resistor connected between PM+ and V CC. For the Long Reach version, the photocurrent can be monitored via the differential voltage across the two PM+ and PM- output pins. It is important to note that the Common Mode voltage of these two monitor outputs (i.e. DC voltages at PM+ and PM-) is high (- 60 V typical). The APD Bias Voltage is temperature compensated to ensure stable operation over the entire operating temperature range. The DATA outputs are differential signals designed to be AC-coupled into 50 ohm load. Transmission lines are recommended for best performance. The Signal Detect circuit monitors the level of the incoming optical signal and generates a TTL logic LOW signal at the SIGNAL DETECT output when insufficient photocurrent is produced. No termination resistor is required for the SIGNAL DETECT output.
Oplink Communications, Inc. reserves the right to make changes in equipment design or specifications without notice. Information supplied by Oplink Commu- nications, 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. © 2008, Oplink Communications, Inc. PIN FUNCTION PIN FUNCTION
1 N/C (NO CONNECTION) 24 N/C (NO CONNECTION)
2 N/C (NO CONNECTION) 23 N/C (NO CONNECTION)
3 SD (SIGNAL DETECT) 22 PM- (for LR), N/C (for SR & IR)
4 GND 21 GND
5 GND 20 PM+
6 GND 19 GND
7 GND 18 VCCA (VCC ANALOG)
8 DATA OUTPUT - 17 VCCA (VCC ANALOG)
9 DATA OUTPUT + 16 GND
10 VCCD (VCC DC-DC converter) 15 GND
11 GND 14 GND
12 GND (DC-DC converter) 13 GND
46335 Landing Pkwy Fremont, CA 94538 T el: (510) 933-7200 Fax: (510) 933-7300 Email: Sales@Oplink.com • www.oplink.com SRX
Ordering Information
R5. 2008.04.304 (Dimension in inches) Pinout Assignments The pigtail length from the package edge is 1.0 meter typical. Supply Voltage 5V= 8 T emperature RangeReceivers Wavelength 1100~1600nm PIN= R1 1100~1600nm APD= R2 Option Pigtail FC= P1 Pigtail ST= P2 Pigtail SC= P3 Pigtail MU= P6 Pigtail LC= P9 -40 ~85˚C= I 0~70˚C= H