2651A/2651E Broadband Photodiode DATASHEET | FEBRUARY 2012 FIBER OPTICS The 2651 provides the proven high performance of EMCORE’s photodiode technology in a very practical, cost-effective package. The 2651A features high linearity and low capacitance over a 1 GHz bandwidth. The extended bandwidth 2651E offers high linearity and low capacitance up to 3 GHz. These broadband photodiodes are housed in a small, environmentally rugged coaxial package. The 2651 broadband photodetector is designed to provide the performance and flexibility needed to meet the expanding applications of two-way communications networks. This photodiode is used today in forward-and return-path applications, including AM-VSB CATV, QAM 64/256, PON, FTTC and FTTH receivers. Applications Forward-Path and Return-Path Broadband Video Transport FTTx Receivers The 2651A and 2651E photodiodes are compliant with all criteria of the Restriction of the Use of Hazardous Substances in Electrical and Electronic Equipment (RoHS) guidelines 2002/95/EC EDFA and Network Monitors Performance Highlights Features Low Cost Package Operating Case Temperature Low Capacitance, < 0.4 pF Min Typ Max Units -40 25 +85 C 1100 - 1600 nm Low Dark Current < 50 nA at +85C Wavelength 1 GHz Flat Response, + 0.5 dB Responsivity, 1310 nm - 0.90 - 1550 nm - 0.98 - Dark Current, 25C - - 5 85C - - 50 - 0.35 0.4 - 1000 - 3000 Extended Bandwidth Option High Responsivity - > 0.90 A/W at 1310 nm, typ. - > 0.98 A/W at 1550 nm, typ. RoHS Compliant Capacitance Bandwidth, 2651A 2651E - A/W nA pF MHz Gain Flatness, < 1 GHz - - 1.0 dBp-p Gain Up-Tilt, 2651E, 1 GHz to 3 GHz 2 - 4 dB DSO, 2651A/E, < 1 GHz - - -75 - - -65 - - -85 - - -75 10 12 15 2651A/E, 1 GHz – 3 GHz DTB, 2651A/E, < 1 GHz 2651E, 1 GHz – 3 GHz Bias Voltage | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. dBc dBc V 2651A/2651E Broadband Photodiode FIBER OPTICS DATASHEET | FEBRUARY 2012 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 operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability. Parameter Symbol Min Max Unit Operating Temperature Range Top -40 85 °C Storage Temperature Range Tstg -40 85 °C Input Power Saturation PIN - 10 mW Reverse Voltage VR - 30 V Forward Current IF - 10 mA DC/Optical Characteristics Parameter Condition Min Typ Max Unit Wavelength - 1100 - 1600 nm Responsivity 1310 nm 1550 nm 0.85 0.95 0.90 0.98 - A/W Dark Current 25C 85C - - 5 50 nA Capacitance - - 0.35 0.4 pF - - -40 dB Optical Return Loss Bias Voltage - 10 12 15 V Fiber Buffer - - 900 - m Fiber Core / Cladding - - 9/125 - m Condition Min Typ Max Unit - - 1000 3000 MHz RF Characteristic Parameter Frequency Range 2651A 2651E 1 1 2651A/E, peak-to-valley, < 1 GHz 1 2651E up-tilt gain Frequency Response Frequency Response 1,3 DSO DTB 1,3 - - 1 dB 2 - 4 dB 2651A/E, 1310 nm, two tone test 4 2651E, 1310 nm, two tone test - - -75 -65 dBc 2651A/E, 1310 nm, two tone test 4 2651E, 1310 nm, two tone test - - -85 -75 dBc 2 1. Characterized with resistive load of 75. 2. 1 GHz to 3 GHz. 3. Each test laser has 40% OMI. Distortion products are measured at 81, 449, 600, 850. Optical Pin = 0 dBm. Vpd = 12V. 4. Additional test frequencies of 1500, 2000, and 2500 MHz | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 2651A/2651E Broadband Photodiode FIBER OPTICS DATASHEET | FEBRUARY 2012 Outline Drawing (Dimensions are in mm) Block Diagram and Pinout . . . Anode Cathode Ground Pin Definitions Pin Description 1 2 3 Anode Cathode Ground | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 2651A/2651E Broadband Photodiode FIBER OPTICS DATASHEET | FEBRUARY 2012 Fiber Length 115 + 15 cm 60 + 2 cm 47 + 2 cm 38 + 2 cm Conn Plastic Mounting Bracket (Dimensions are in mm) With Bracket Without Bracket | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 2651A/2651E Broadband Photodiode DATASHEET | FEBRUARY 2012 FIBER OPTICS Metal Mounting Bracket (Dimensions are in mm) | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice. 2651A/2651E Broadband Photodiode FIBER OPTICS DATASHEET | FEBRUARY 2012 Ordering Information – Model Number Options 2651A-045-115-N Model Version 2651A 2651E Optical Connector 020 = FC/APC 023 = FC/UPC 045 = SC/APC 8O Angle Connector 046 = SC/APC 9 O Angle connector 040 = SC/UPC 0E2 = E2000 Fiber Length 038 = 38 cm 047 = 47cm 060 = 60 cm 066 = 66 cm 115 = 115 cm 100 = 100 cm Mounting Bracket N = No mounting bracket B = Plastic mounting bracket M = Metal mounting bracket | REV 2012.02 Information contained herein is deemed reliable and accurate as of the issue date. EMCORE reserves the right to change the design or specification at any time without notice.