PHOTO IC Photo IC for laser beam synchronous detection S7858 Photo IC with switchable internal amplifier gain S7858 uses a dual-element PIN photodiode and compares the two photocurrent signals to maintain a highly stable output even when input laser power or ambient temperature fluctuates. The internal amplifier gain is switchable with changes in the input laser power. Features Applications l Switchable gain function (6 or 20) l Print start timing detection for laser printers, digital copiers, l Photo IC for fast printing fax machines, etc. l High sensitivity l Stable output versus laser power or temperature variations Absolute maximum ratings (Ta=25 C, Vcc1=Vcc2=Vcc) Parameter Symbol Supply voltage Vcc Power dissipation *1 P External input voltage Vext Output voltage Vo Output current Io RO1, RO2 terminal current IRO Operating temperature Topr Storage temperature Tstg Soldering *1: Derate power dissipation at a rate of -2 mW/C above Ta=25 C. Value -0.5 to +7 150 -0.5 to +Vcc+0.5 -0.5 to Vcc 20 5 -25 to +80 -40 to +85 230 C, 5 s Unit V mW V V mA mA C C - Electrical and optical characteristics (Ta =25 C, =780 n m, Vcc1=Vcc2= Vcc=5 V, Ro1=R o 2=5. 1 k, unless otherwise n oted) Parameter High level output voltage Symbol Condition VOH PI=0 PI=140 W, at Vext=L Low level output voltage VOL PI=40 W, at Vext=H IOL=10 mA High level current consumption ICCH PI=0 PI=140 W, at Vext=L Low level current consumption ICCL PI=40 W, at Vext=H Threshold input power 1 PTH Vext=L Threshold input power 2 PTH Vext=H PI=200 W center, at Vext=L HL propagation delay time tPHL PI=60 W center, at Vext=H PI=10 % *2 Rise time tr RL=510 , CL=15 pF Fall time tf 2 *2: Beam diameter (1/e ) =100 m, scan speed=0.5 mm/s Not including jitter caused by polygon mirror non-uniformity, etc. Min. 4.9 Typ. - Max. - Unit V - 0.4 0.6 V - 4 7 mA - 6 9 mA 25 7 35 10 45 13 W W - - 10 ns - 60 20 180 100 ns ns Photo IC for laser beam synchronous detection Equivalent circuit S7858 Output waveforms of terminal 8, 11 and 13 PD1 PD2 VCC1 VCC2 EXTERNAL GAIN RESISTANCE PD2 PD1 10 k RO2 RELAY TERMINAL ACTIVE AREA RO1 IN (PD2) VO RELAY TERMINAL Vref IN (PD1) RO2 RO1 GND Vext I/F KPICC0050EA VO CENTER OF CHIP 0.6 0.3 0.89 0.35 1.4 0.3 Dimensional outline (unit: mm) KPICC0008EB Gain switchable terminal logic 5.4 0.2 (INCLUDING BURR) 0.45 Vext TTL input L H Open 1.4 0.3 1.0 DEPTH 0.15 3.05 0.2 9.5 0.8 0.15 2.4 0.4 10 0.2 VCC1 1.7 0.5 0.15 PHOTOSENSITIVE SURFACE 10 PD1 0.7 Built-in gain 6 times 20 times 6 times Tolerance unless otherwise noted: 0.1, 2 Shaded area indicates burr. 9.7 0.2 (INCLUDING BURR) 15 15 0.6 0.3 PD2 5.2 2.6 0.2 PD1 8.0 0.3 0.1 0.1 [IN (PD2)] (GND) RO2 Vext GND VO (GND) RO1 VCC2 [IN (PD1)] PD2 VCC1 CENTER OF CHIP DETAILS OF PHOTODIODE Tolerance unless otherwise noted: 0.03 Pins and should be connected to Pin on the PC board. KPICA0039EA 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. (c)2001 Hamamatsu Photonics K.K. HAMAMATSU PHOTONICS K.K., Solid State Division 1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, 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.: 8, 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: Smidesvagen 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. KPIC1043E01 Feb. 2001 DN