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| Advance Data Sheet September 2000 R768-Type OC-768/STM-256 Lightweight Receiver Features s s s High data rate capability, 40 Gbits/s PIN photodetector Fully operational through the L-band (1.6 m) wavelength range Single-mode fiber pigtail with FC/PC optical connector Operating case temperature range: 0 C to 65 C Compact, butterfly package s s s The R768 Receiver is manufactured in a 16-pin, pigtailed surface-mount metal package with a single-ended V-connector. Applications s s s Line terminal equipment High-speed networks up to 40 Gbits/s SONET OC-768 and SDH STM-256 telecommunications applications Extended-reach datacom and telecom applications Digital video s s R768-Type OC-768/STM-256 Lightweight Receiver Advance Data Sheet September 2000 Description Receiver Operation The R768 40 Gbits/s fiber-optic receiver consists of a high-speed photodetector (PIN) and a wide-band linear preamp in a pigtailed surface-mount metal package with a single-ended V-connector. It is designed for use in single-mode, high-speed telecommunication applications at the SONET OC-768 and the ITU-T SDH STM-256 data rate of 42.5 Gbits/s. The operating case temperature range for the receiver is 0 C to 65 C. The receiver is manufactured in a compact, 16-pin surface-mount package with a single-mode optical fiber pigtail. The fiber pigtail is internally beveled for low return loss and is available with an FC-PC optical connector. The received data is dc-coupled. The receiver requires only a 6 V power supply for operation, plus an optional VADJUST from -1.0 V to +1.0 V (see pin descriptions). The photodiode requires a separate bias voltage: for the PIN, a nominal reverse bias of 4 V is required. Pin Information Table 1. Pin Descriptions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Name Not Used GND Alternate PIN Bias GND GND GND VADJUST (optional) GND GND GND GND VCC GND PIN Bias GND NC 2 Agere Systems Inc. Advance Data Sheet September 2000 R768-Type OC-768/STM-256 Lightweight Receiver Absolute Maximum Ratings Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operations section of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Positive Supply Voltage Photodiode Forward Current* Maximum Reverse Bias Optical Input Power, PIN Operating Case Temperature Storage Temperature Lead Soldering Temperature Lead Soldering Time Symbol VCC IPD VB PMAX TC Tstg -- -- Min 5.0 -- -- -- 0 -40 -- -- Max 7.0 1 5 8 65 85 250 10 Unit V mA V dBm C C C s * Device is normally reverse biased. Forward biasing the photodiode can compromise device performance and reliability. Optical Characteristics Table 2. Optical Characteristics (TA = 25 C) Parameter Optical wavelength for Rated Sensitivity Sensitivity, PIN Maximum Optical Input Power, Average, PIN Optical Return Loss Responsivity of PIN, = 1.55 m Total Dark Current Polarization-dependent Loss Symbol PLOW PHIGH -- PIN ID PDL Min 1.480 -- -- -27 -- -- -- Typ -- -7 3 -30 0.7 0.5 -- Max 1.610 -- -- -- -- -- 0.5 Unit m dBm dBm dBm A/W A dB Agere Systems Inc. 3 R768-Type OC-768/STM-256 Lightweight Receiver Advance Data Sheet September 2000 Electrical Characteristics Table 3. Electrical Characteristics (TA = 25 C) Parameter dc Power Supply Voltages: Positive Supply PIN Bias Optional VADJUST Positive dc Power Supply Current Power Dissipation Conversion Gain Average Equivalent Input Noise Spectral Density Low Frequency Cutoff (-3 dB) Bandwidth Rolloff (3 dB + 5 GHz) Peaking Deviation from Linear Phase: 100 kHz--25 GHz 25 GHz--40 GHz 40 GHz--50 GHz Output Return Loss: 100 kHz--20 GHz 25 GHz--40 GHz 40 GHz--50 GHz Symbol VCC VPIN VADJ ICC PDISS -- -- fL BW -- -- -- -- -- -- S22 -- -- -- -- -- -- -15 -10 -5 dB dB dB 10 20 40 -- -- -- deg deg deg Min 5.5 3.5 -1.0 -- -- -- -- -- -- -- -- Typ 6.0 4.0 -- 80 -- 60 -- 100 45 -10 -- Max 6.5 4.5 1.0 150 0.975 -- 50 -- -- -- 2 Unit V V V mA W V/W pA/Hz kHz GHz dB dB 4 Agere Systems Inc. Advance Data Sheet September 2000 R768-Type OC-768/STM-256 Lightweight Receiver Outline Diagram Dimensions are in millimeters. 21.440 16.590 3.890 1.270 0.508 PIN 8 PIN 1 C BORE 3.75 x 2.30 DP BOTH SIDES (#4-40 TAP THROUGH ENGLISH) 2.375 20.300 15.910 1.330 13.480 PIN 9 PIN 16 11.540 29.470 58.400 20.350 14.510 6.600 2.50 9.880 6.380 6.630 CONNECTOR NOT SHOWN 1-1157(F) Agere Systems Inc. 5 R768-Type OC-768/STM-256 Lightweight Receiver Advance Data Sheet September 2000 Ordering Information Table 4. Ordering Information Description R768-Type OC-768/STM-256 Lightwave Receiver Product Code R768PGAA R768PSAA R768PDAA R768PJAA Photodiode PIN PIN PIN PIN Connector FC LC SC Test Ferrule Comcode 108894635 108894643 108727041 TBD For additional information, contact your Agere Systems Account Manager or the following: INTERNET: http://www.agere.com E-MAIL: docmaster@agere.com N. AMERICA: Agere Systems Inc., 555 Union Boulevard, Room 30L-15P-BA, Allentown, PA 18109-3286 1-800-372-2447, FAX 610-712-4106 (In CANADA: 1-800-553-2448, FAX 610-712-4106) ASIA: Agere Systems Hong Kong Ltd., Suites 3201 & 3210-12, 32/F, Tower 2, The Gateway, Harbour City, Kowloon Tel. (852) 3129-2000, FAX (852) 3129-2020 CHINA: (86) 21-5047-1212 (Shanghai), (86) 10-6522-5566 (Beijing), (86) 755-695-7224 (Shenzhen) JAPAN: (81) 3-5421-1600 (Tokyo), KOREA: (82) 2-767-1850 (Seoul), SINGAPORE: (65) 778-8833, TAIWAN: (886) 2-2725-5858 (Taipei) EUROPE: Tel. (44) 7000 624624, FAX (44) 1344 488 045 Agere Systems Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liabi lity is assumed as a result of their use or application. ST is a registered trademark of Agere Systems Inc. Copyright (c) 2001 Agere Systems Inc. All Rights Reserved Printed in U.S.A. September 2000 DS00-383OPTO-1 |
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