Data Sheet 10Gb/s surface mount coplanar APD preamp receiver for low OSNR applications AT10GC The AT10GC receiver consists of an avalanche photodiode, a low-noise preamplifier and a precision NTC thermistor in a hermetic coplanar package with a connectorized single-mode fiber pigtail. Differential outputs are provided to improve noise rejection for enhanced sensitivity. It has been optimised for use in 10Gb/s metro applications, either as a discrete device or within a transponder, using NRZ modulation, with or without FEC, at data rates up to 10.709Gb/s. Features: • Sensitivity, -26.5dBm typical • Low capacitance high speed InGaAs APD photodetector • Supports FEC rates up to 10.709Gb/s • Designed to exceed the environmental requirements of Telcordia GR-468-CORE • RoHS 5/6 compliant Applications: • Client or line side links • 300 pin LR transponder applications 1 Data Sheet Operating Characteristics Case Temperature = 25°C unless otherwise specified Parameter Typ Max Unit 231-1 PRBS BER<10-12 Voptimal = VM10 -26.5 -24.5 dBm Sensitivity penalty EOL over temperature   231-1 PRBS BER<10-12 Voptimal = VM10 T=-40 to +85°C 0.75 1.0 dB Deviation from linear phase DC - 6GHz -10 +10 ° VAPD=VM10 Small signal 7 Optical sensitivity BOL   Symbol Measurement Conditions Sens GHz High frequency -3dB corner fH Low frequency -3dB corner fL Transimpedance gain    TZ Small signal Maximum output voltage VOUT Peak-to-peak S22 DC to 8.0GHz PSAT 231-1 PRBS VAPD=VM3 BER<10-12 -3 APD breakdown voltage Vbr IAPD=10µA 20 40 V APD breakdown voltage temperature coefficient TVbr 0.030 0.061 V/°C Dark current Id 100 nA Amplifier bias current Iee 90 mA Input current for output limiting IIn lim Transimpedance amp supply voltage Thermistor resistance Return loss Optical overload         1.1 40 kHz 1.4 2.5 kΩ 500 700 mV -8 dB -1 At 90% of Vbr 75 Peak-to-peak dBm 1000 uA Vee -5.2 V RTH 10 kΩ Notes: 2 Min Optical Wavelength between 1525-1575nm. Data to 1610nm available on request. Measured with 9.95Gb/s, extinction ratio > 12dB, Q factor > 30, 50% crossing level, 1550nm. Load impedance is 50Ω AC-coupled with a return loss > 20dB, up to 20GHz. Excludes APD responsivity. Differential. Single ended. Data Sheet Absolute Maximum Ratings The table below provides maximum and/or minimum values of critical parameters which will not permanently damage the device, but for which the operating specification may not hold. Parameter Symbol Min Max Amplifier bias voltage Vee -6.0 0.5 V Top -40 +85 °C Tstg -40 +85 °C 3 mA Vbr V Operating temperature Storage temperature   Input photocurrent IPD APD bias voltage VAPD Fiber bend radius 0 Units 20 mm Notes:  The operating temperature is defined as the temperature of the module case.  The rating is referred to the ambient temperature. Class 2 ESD precautions must be observed when handling these devices. Pin Out 3 Pin # Symbol Function Pin # Symbol Function 1 NC Case ground 10 Out_P Positive output 2 Vpd APD bias voltage 11 GND Case ground 3 NC No connection 12 GND Case ground 4 NC Amplifier bias 13 FBIN Offset feedback 5 NC No connection 14 NC No connection 6 GND Case ground 15 NC No connection 7 GND Case RF ground 16 Rth Thermistor 8 Out_N Negative RF data output 17 GND Case ground 9 GND Case ground Data Sheet Circuit Schematic VAPD RTH 0.9nF 10kOhms @ 25 °C 10nF Out_P Out_N FBIN 100nF 0.9nF Vee 1nF 100nF Figure  AT10GC Circuit schematic. Outline Drawing Dimensions in mm Figure  Outline diagram (Illustration only. For full details, refer to appropriate assembly drawing.) Note: Fiber is 900mm secondary coated single-mode fiber, length = 1100 +0/-200mm. 4 Data Sheet RoHS Compliance Bookham is fully committed to environment protection and sustainable development and has set in place a comprehensive program for removing polluting and hazardous substances from all of its products. The relevant evidence of RoHS compliance is held as part of our controlled documentation for each of our compliant products. RoHS compliance parts are available to order, please refer to the ordering information section for further details. Ordering Information: AT10GC - (Connector) J = SC/PC J57 = LC e.g. AT10GC-J is an AT10GC with an SC/PC connector. Other options available on request Contact Information North America Bookham Worldwide Headquarters Europe Paignton Office Asia Shenzhen Office 2584 Junction Ave. San Jose CA 95134 USA Brixham Road Paignton Devon TQ4 7BE United Kingdom 2 Phoenix Road Futian Free Trade Zone Shenzhen 518038 China • Tel: +1 408 919 1500 • Tel: +44 (0) 1803 66 2000 • Fax: +1 408 919 6083 • Fax: +44 (0) 1803 66 2801 • Fax: +86 755 33305805 +86 755 33305807 • Tel: +86 755 33305888 Important Notice Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by Bookham before they become applicable to any particular order or contract. In accordance with the Bookham policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of Bookham or others. Further details are available from any Bookham sales representative. www.bookham.com [email protected] Site Approvals ISO14001:1996 EMS 504193 TL9000 Rev 3.0 (ISO9001:2000) FM15040 5 BH12851 Rev 2.0 March 2007 ©Bookham 2006. Bookham is a registered trademark of Bookham Inc.