VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Photodetector/Transimpedance Amplifier Family for Optical Communication VSC7809 Features • Integrated Photodetector/Transimpedance Amplifier Optimized for High-Speed Optical Communications Applications • Low Input Noise Equivalent Power • Fibre Channel/Gigabit Ethernet Compatible • Single 3.3V Power Supply • Large Optically Active Area • High Bandwidth Part Number Data Rate Bandwidth (MHz) Input Noise (µW rms) Optically Active Area (µm diameter) VSC7809 1.25Gb/s 800 1.4 100 General Description The VSC7809 integrated Photodetector/Transimpedance Amplifier provides a highly integrated solution for converting light from a fiber optic communications channel into a differential output voltage. The benefits of Vitesse Semiconductor’s Gallium Arsenide H-GaAs process are fully utilized to provide very high bandwidth and low noise in a product with a large optically active area for easy alignment. The sensitivity, duty cycle distortion and jitter meet or exceed all Fibre Channel and Gigabit Ethernet application requirements. Parts are available in either die form, flat-windowed packages or in ball-lens packages. By using a metal-semiconductor-metal (MSM) photodetector with a monolithic integrated transimpedance amplifier, the input capacitance is lowered which allows for a larger optically active area than in discrete photodetectors. Integration also allows superior tracking over process, temperature and voltage between the photodetector and the amplifier, resulting in higher performance. This part can easily be used in developing Fibre Channel Electro-Optic Receivers which exhibit very high performance and ease of use. VSC7809 Block Diagram Photodetector/Transimpedance Amplifier +3.3V DOUTP DOUTN GND Both DOUTP and DOUTN are back-terminated to 25Ω. G52195-0, Rev 2.4 04/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 1 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Photodetector/Transimpedance Amplifier Family for Optical Communication VSC7809 Table 1: Electro-Optical Specifications(1) Symbol Parameter Min Typ(2) Max Units Conditions VSS Supply Voltage 3.0 3.3 3.6 V IDD Supply Current 14 23 40 mA PSRR Power Supply Rejection Ratio - -10 - dB λ Wavelength 700 840 850 nm fC Low Frequency Cutoff - 1.8 2.5 MHz -3db, P(4) = -15dBm @ 50MHz BW Optical Modulation Bandwidth 800 1100 - MHz -3db, P = -15dBm @ 50MHz S Sensitivity -20 -21 dBm 1.25Gb/s, BER10-12(5) RO Single Ended Output Impedance 20 25 30 Ω VO Differential Output Voltage 0.2 0.26 0.4 V RD Differential Responsivity 0.8 1.2 - mV/µW VDC Output Bias Voltage 1.0 - - V ∆VDC Bias Offset Voltage - - 200 mV NEPO Input Noise Equivalent Power - 1 1.4 µW rms Frequencies up to 40MHz Use external filter to get PSRR of -35dB(3). P = -5dBm, RLOAD = 100Ω differential RLOAD = 100Ω P = -15dBm @ 50MHz P = 0mW VNO Output Noise Voltage - 1.0 1.25 mV rms P = 0mW DCD Duty Cycle Distortion - - 4.5 % P = -5dBm IOUT Output Drive Current 2.0 2.6 - mA PDJ Pattern Dependent Jitter - 35 P = -5dBm 60 ps P = -5dBm +/-10% Voltage Window ---- Optically Active Area - 100 - µm Diameter PPJ PP Jitter - 190 250 ps P = -5 dBm tR Rise Time - - 400 ps 20%-80% P = -5dBm tF Fall Time - - 400 ps 20%-80% P = -5dBm Notes: (1) Specified over 0°C (ambient) to 70°C (case). (2) Typical conditions 25°C and 3.3V power supply. (3) See Note 1 in Application Note 48. (4) P = Incident Optical Power (5) See Note 2 In Application Note 48. Page 2 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52195-0, Rev 2.4 04/05/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7809 Photodetector/Transimpedance Amplifier Family for Optical Communication Table 2: Absolute Maximum Ratings Symbol Parameter Limits VSS Power Supply 6V Required TSTG Storage Temperature -55°C to 125°C (case temperature under bias) HSTG Storage Humidity 5 to 95% R.H. (including condensation) HOP Operating Humidity 8 to 80% R.H. (excluding condensation) PINC Incident Optical Power +3dBm IS Impact Shock 500 G. Half Sine Wave Pulse Duration 1 +/-0.5 ms 3 blows in each direction VIB Vibration 20 > 2000 > 20Hz, 10 Minutes 10 G. Peak Acceleration 4 Complete Cycles, 3 Perpendicular Axes Table 3: Recommended Operating Conditions Symbol Parameter Limits VSS Power Supply 3.0VP-3.6V (3.3V nominal) TOP Operating Temperature 0°C (ambient) to 70°C (case) PMAX Maximum Optical Power 0dBm G52195-0, Rev 2.4 04/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 3 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Photodetector/Transimpedance Amplifier Family for Optical Communication VSC7809 Table 4: Pin Table Specifications for Ball Lens Packages, Flat Window Packages and Bare Die Symbol Description DOUTP Data output normal (with reference to incident light) DOUTN Data output complement (inverting) (with reference to incident light) VSS Power supply GND Ground (package case) NOTE: Pin Diagram is identical for both TO-46 and TO-56 package styles. Figure 1: Pin Diagram VSS DOUTP DOUTN GND Bottom View Figure 2: Schematic View of Bare Die Pad Assignments GND DOUTN GND DOUTP VSS GND Page 4 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52195-0, Rev 2.4 04/05/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Photodetector/Transimpedance Amplifier Family for Optical Communication VSC7809 Package Information Individual Die (4x) 0.365 φ0.1 (4x) 0.055 (6x) 0.11 DOUTP (2x) 0.74 GND VSC7809 (2x) 0.29 0.35 1.48 1.58 VSS GND (2x) 0.247 0.05 0.05 (2x) 0.15 DOUTN GND 1.68 (4x) 0.11 (4x) 0.055 0.42 (2x) 0.1235 (2x) 0.18 0.05 0.835 0.05 0.94 1.04 ± 0.05 G52195-0, Rev 2.4 04/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 5 VITESSE SEMICONDUCTOR CORPORATION Photodetector/Transimpedance Amplifier Family for Optical Communication Advance Product Information VSC7809 TO-46 Flat Window Package Reference Isometric Page 6 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52195-0, Rev 2.4 04/05/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information VSC7809 Photodetector/Transimpedance Amplifier Family for Optical Communication TO-56 Flat Window Package Reference Isometric G52195-0, Rev 2.4 04/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 7 VITESSE SEMICONDUCTOR CORPORATION Photodetector/Transimpedance Amplifier Family for Optical Communication Advance Product Information VSC7809 TO-46 Ball Lens Package—7mm Lead Length Reference Isometric Page 8 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52195-0, Rev 2.4 04/05/01 VITESSE SEMICONDUCTOR CORPORATION Advance Product Information Photodetector/Transimpedance Amplifier Family for Optical Communication VSC7809 TO-46 Ball Lens Package—13mm Lead Length Reference Isometric G52195-0, Rev 2.4 04/05/01 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com Page 9 VITESSE SEMICONDUCTOR CORPORATION Photodetector/Transimpedance Amplifier Family for Optical Communication Advance Product Information VSC7809 Ordering Information The order number for this product is formed by a combination of the device type and package type. VSC7809 xx Device Type Photodetector/Transimpedance Amplifier Family for Optical Communication Package WA: TO-46 Flat Window WB: TO-56 Flat Window WC: TO-46 Ball Lens—7mm Lead Length WD: TO-46 Ball Lens—13mm Lead Length X: Bare Dice Notice Vitesse Semiconductor Corporation (“Vitesse”) provides this document for informational purposes only. This document contains pre-production information about Vitesse products in their concept, development and/or testing phase. All informaiton in this document, including descriptions of features, functions, performance, technical specifications and availability, is subject to change without notice at any time. Nothing contained in this document shall be construed as extending any warranty or promise, express or implied, that any Vitesse product will be available as described or will be suitable for or will accomplish any particular task. Vitesse products are not intended for use in life support appliances, devices or systems. Use of a Vitesse product in such applications without written consent is prohibited. Page 10 © VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012 Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: [email protected] Internet: www.vitesse.com G52195-0, Rev 2.4 04/05/01