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| PSD One-dimensional PSD S3979, S3931, S3932, S1352, S3270 3 to 37 mm resistance length PSD for precision distance measurement Hamamatsu provides various types of one-dimensional PSD (Position Sensitive Detector) designed for precision distance measurement such as displacement meters. S3979 has a 1 x 3 mm active area sealed in a TO-5 package. S3931 and S3932 have an active area of 1 x 6 mm and 1 x 12 mm respectively, and are mounted on a compact ceramic package with a transparent resin window. Variant types (S3931-01, S3932-01) with a visible-cut resin window are also available. S1352 and S3270 offer an active area longer than 30 mm, allowing position detection at a long distance. S3270 has a visible-cut resin window, and S3270-01 with a transparent resin window is also available. Features Applications l Superior position detection ability l Displacement sensing l High reliability l Distance measurement l S3931, S3932: Easy to use 4-pin small ceramic package l Proximity switching l Long and narrow active area S1352: 2.5 x 34 mm S3270: 1 x 37 mm s General ratings / Absolute maximum ratings Type No. S3979 S3931 S3932 S1352 S3270 Package TO-5 Ceramic Window material *1 K R R K R (B) Active area size (mm) 3x1 6x1 12 x 1 34 x 2.5 37 x 1 Absolute maximum ratings Reverse voltage Operating temperature Storage temperature VR Max. Topr Tstg (V) (C) (C) 20 -10 to +60 -10 to +75 -20 to +80 s Electrical and optical characteristics (Typ. Ta=25 C, unless otherwise noted) Spectral Peak Photo response sensitivity sensitivity range wavelength S p =p Interelectrode resistance Rie Vb=0.1 V Position Terminal Temp. Saturation Dark Rise time detection error * capacitance Position coefficient ! tr photocurrent * current E Ct resolution of VR=5 V VR=5 V ID VR=5 V VR=5 V *4 ID Type No. RL=1 k VR=5 V RL=1 k light spot 200 m TCID f=10 kHz Min. Typ. Max. Typ. Max. Typ. Max. (nm) (nm) (A/W) (k) (k) (k) (m) (m) (A) (nA) (nA) (times/C) (s) (pF) (m) S3979 100 140 180 15 60 40 0.1 5 2.5 20 0.1 S3931 30 120 0.15 10 1.5 40 0.2 0.55 30 50 80 100 320 to 1100 920 S3932 60 240 0.2 20 1.15 3.0 80 0.3 S1352 0.6 10 20 30 125 500 250 2 150 0.7 150 2.1 S3270 0.55 10 15 20 100 400 300 0.5 20 1.0 100 2.8 700 to 1100 960 *1: K: borosilicate glass, R: clear resin coating, R (B): visible-cut resin coating. *2: A range of 75 % of that from the center of the photosensitive surface to the edge. *3: The upper limit of linearity of photocurrent in response to the quantity of light is defined as the point where the linearity deviates by 10 %. *4: Position resolution This is the minimum detectable light spot displacement. The detection limit is indicated by the distance on the photosensitive surface. The numerical value of the resolution of a position sensor using a PSD is proportional to both the length of the PSD and the noise of the measuring system (resolution deteriorates) and inversely proportional to the photocurrent (incident energy) of the PSD (resolution improves). Light source: LED (900 nm) Photocurrent: 1 A Spot light size: 200 m Circuit system input noise: 1 V (1 kHz) Frequency range: 1 kHz Interelectrode resistance: Typical value (refer to the specification table) One-dimensional PSD s Spectral response 0.8 QE=100 % S3979, S3931, S3932, S1352, S3270 s Photo sensitivity temperature characteristics (Typ. Ta=25 C) +2.0 (Typ.) TEMPERATURE COEFFICIENT (%/C) PHOTO SENSITIVITY (A/W) +1.5 0.6 S3979 S3931 S3932 0.4 S1352 +1.0 S1352, S3270 S3979, S3931, S3932 +0.5 0.2 QE=50 % S3270 0 0 400 600 800 1000 -0.5 300 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) KPSDB0069EA WAVELENGTH (nm) KPSDB0070EA s Dark current vs. reverse voltage 10 nA S1352 1 nA (Typ. Ta=25 C) s Terminal capacitance vs. reverse voltage 10 nF (Typ. Ta=25 C, f=10 kHz) S3270 TERMINAL CAPACITANCE S1352 1 nF S3270 S3932 100 pF DARK CURRENT 100 pA S3931 S3979 10 pA S3932 S3931 10 pF S3979 1 pA 0.1 1 10 100 1 pF 0.1 1 10 100 REVERSE VOLTAGE (V) KPSDB0071EA REVERSE VOLTAGE (V) KPSDB0072EA One-dimensional PSD S3979, S3931, S3932, S1352, S3270 s Example of position detectability (Ta=25 C, =900 nm, spot light size: 0.2 mm) S3979 +150 +150 S3931 POSITION DETECTION ERROR (mm) POSITION DETECTION ERROR (mm) +100 +100 +50 +50 0 0 -50 -50 -100 -100 -150 -1.5 -150 -1.0 -0.5 0 +0.5 +1.0 +1.5 -3 -2 -1 0 +1 +2 +3 POSITION ON PSD (mm) KPSDB0010EB POSITION ON PSD (mm) KPSDB0011EB S3932 +150 S1352 POSITION DETECTION ERROR (m) +125 -125 POSITION DETECTION ERROR (mm) +100 -15 -10 -5 0 +5 +10 +15 KPSDC0023EB POSITION ON PSD +50 S3270 POSITION DETECTION ERROR (m) +100 -100 -20 -15 -10 -5 0 +5 +10 +15 +20 KPSDC0068EA 0 -50 POSITION ON PSD -100 s Dimensional outlines (unit: mm) S3979 -150 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 X POSITION ON PSD (mm) KPSDB0012EB ACTIVE AREA 9.2 0.2 WINDOW 5.9 0.1 s Conversion formula of spot light position on the PSD If output signals (photocurrent) I1 and I2 are obtained from electrodes X1 and X2, then the light spot position (x) on the PSD can be found by the following formula. L x ACTIVE AREA 0.45 LEAD KPSDC0010EA s Correction for position detection error 5.08 0.2 Position detection characteristics obtained by the above formula can be corrected to reduce position detection errors. For example, the maximum position detection error (120 m) of S3931 can be significantly reduced to 9 m by using the least square method. ANODE (X2) ANODE (X1) CATHODE (COMMON) CONNECTED TO CASE KPSDA0007EC 13.7 X1 X2 I2 - I1 2x = I1 + I2 L PHOTOSENSITIVE SURFACE 2.7 4.1 0.2 8.1 0.1 One-dimensional PSD S3979, S3931, S3932, S1352, S3270 S3932 15.2 0.2 S3931 9.2 0.2 4.8 0.2 4.8 0.2 ACTIVE AREA PHOTOSENSITIVE SURFACE ACTIVE AREA PHOTOSENSITIVE SURFACE X X (4 x)0.25 0.7 5.08 0.3 0.7 1.5 0.2 4.0 4.0 1.5 0.2 (4 x) 0.4 5.08 0.3 CATHODE (COMMON) ANODE (X2) CATHODE (COMMON) ANODE (X1) (4 x) 0.4 10.16 0.4 CATHODE (COMMON) ANODE (X2) CATHODE (COMMON) ANODE (X1) KPSDA0048EA 5.08 0.3 (4 x)0.25 KPSDA0049EA S1352 2.0 S3270 5.5 0.25 9.0 0.2 ACTIVE AREA (2 x) 57.0 0.6 51.5 0.5 55 0.5 2.2 5.0 0.2 X (2 x) R1.1 4.0 (2 x) R2.2 PHOTOSENSITIVE SURFACE 3.0 42.3 0.4 1.0 X 0.75 t GLASS 8.5 1.5 2.5 0.2 ACTIVE AREA 5.0 0.2 PHOTOSENSITIVE SURFACE 1.25 1.0 1.4 10.0 0.45 0.05 LEAD 40.3 0.4 3.75 0.25 19.05 0.75 LEAD 19.05 ANODE (X1) CATHODE (COMMON) ANODE (X2) 1.7 ANODE (X1) CATHODE (COMMON) ANODE (X2) KPSDA0016EA KPSDA0050EA 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. KPSD1002E02 Feb. 2001 DN |
Price & Availability of S3931
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