PHOTODIODE GaAs PIN photodiode with preamp G9845-14 ROSA type, 850 nm, 1.25 Gbps Features Applications l φ1.25 mm sleeve type ROSA (Receiver Optical Sub-Assembly) l High-speed response: 1.25 Gbps l High gain with AGC (Auto Gain Control): 1.6 V/mW (at -20 dBm) l Low power supply voltage: Vcc=Vpd=3.3 V l Differential output l Sensitivity: +2 to -26 dBm l Gigabit Ethernet l Fiber channel ■ Absolute maximum ratings (Ta=25 °C) Parameter Supply voltage Reverse voltage (photodiode) Operating temperature Storage temperature *1: No condensation Symbol Vcc Value -0.5, +5 Unit V VR 7 V Topr Tstg -40 to +85 * 1 -40 to +85 * 1 °C °C ■ Electrical and optical characteristics ( Ta = 2 5 ° C, V c c = 3. 0 t o 3.6 V, V p d = 3. 0 t o 5. 0 V, Ve e= 0 V, R L =5 0 Ω *2, λ=8 5 0 n m , u nl e s s o t h e r w is e n ot ed) Parameter Symbol Condition Responsivity R Photo sensitivity S Pin= -20 dBm *3 Supply current Icc Dark state, R L =∞ Cut-off frequency fc Pin= -20 dBm, -3 dB Low cut-off frequency fc-L Pin= -20 dBm, -3 dB Noise equivalent power NEP Dark state, to 938 MHz * 3 Trans-impedance Tz f=100 MHz * 3 Minimum receivable Pmin 1.25 Gbps, NRZ sensitivity PN=23, BER=10 -10 Maximum receivable Pmax Extinction ratio 10 dB sensitivity Output amplitude Vomax Differential Output resistance Rout Dark current ID Dark state, R L =∞ Optical return loss ORL *2: Output: Capacitive coupling *3: Single-ended (Vout+) measurement Min. 0.4 1.1 850 2.0 Typ. 0.5 1.6 45 1000 3.5 270 3.3 Max. 60 4.5 430 - - -26 -24 0 +2 - 12 50 0.05 13.5 330 1 - Unit A/W V/mW mA MHz kHz nW rms kΩ dBm mV p-p Ω nA dB 1 GaAs PIN photodiode with preamp ■ Photo sensitivity vs. average optical input power (Typ. Ta=25 ˚C, Bit rate 1.25 Gbps, PN=23) 10-3 10-4 BIT ERROR RATE PHOTO SENSITIVITY (V/mW) ■ Bit error rate (Typ. Ta=25 ˚C, Duty ratio 50 %, Pulse width 5 ns) 10 G9845-14 1 10 -5 10-6 10 -7 10 -8 10-9 10-10 -11 0.1 -30 -20 -25 -15 -5 -10 10 10-12 -32 -31 -30 -29 -28 -27 -26 -25 -24 -23 -22 0 AVERAGE OPTICAL INPUT POWER (dBm) AVERAGE OPTICAL INPUT POWER (dBm) KGPDB0053EA KGPDB0068EA ■ Dimensional outline (unit: mm, tolerance unless otherwise noted: ±0.1) ■ Eye diagram 4.88 2.92 2.72 3.97 (OPTICAL REFERENCE PLANE) (13) 1.27 ± 0.03 Bit rate 1.25 Gbps, PN=23 λ=850 nm, Pin= -20 dBm, Vcc=3.3 V 4.17 ± 0.02 4.64 6.86 ± 0.5 Vout- ( 1.25) 3.38 ± 0.03 4.04 ± 0.03 5.08 Vout+ (5 ×) 0.35 ± 0.05 ■ Operation circuit example (60˚) TESTER AGC LIGHT INPUT 2.54 ± 0.15 6.6 5.94 ± 0.05 Vcc=3.3 V 0.1 µF Vpd=3.3 V 0.1 µF +0.07 R Vout+ 0.1 µF 50 Ω Vout50 Ω Vee=GND 50 Ω COAXIAL CABLE 0.1 µF 2.95-0.03 5.92 ± 0.2 0.3 Pin No. 50 Ω Vpd (CATHODE) VoutVout+ Vcc Vee (GND) KGPDC0003EA KIRDA0188EA Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2005 Hamamatsu Photonics K.K. HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Higashi-ku, Hamamatsu City, 435-8558 Japan, Telephone: (81) 53-434-3311, Fax: (81) 53-434-5184, http://www.hamamatsu.com U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218 Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658 France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10 United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777 North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01 Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741 Cat. No. KGPD1017E01 2 Apr. 2005 DN