HAMAMATSU S1352

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 × 3 mm active area sealed in a TO-5 package. S3931 and S3932 have an active area of 1 × 6 mm and 1 ×
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 × 34 mm
S3270: 1 × 37 mm
■ General ratings / Absolute maximum ratings
Type No.
S3979
S3931
S3932
S1352 *2
S3270 *2
Package
Window
material *1
(mm)
1×3
1×6
1 × 12
2.5 × 34
1 × 37
K
R
R
K
R (B)
TO-5
Ceramic
Active area
size
Absolute maximum ratings
Reverse voltage O p erating te m p erature Storage temperature
Topr
Tstg
VR Max.
(V)
(°C)
(°C)
20
-10 to +60
-20 to +80
-10 to +75
■ Electrical and optical characteristics (Typ. Ta=25 °C, unless otherwise noted)
Type No.
S p ectral
Peak
Photo
response sensitivity sensitivity
range wavelength
S
λ
λp
λ=λp
(nm)
(nm)
P osition
Temp.
Terminal
S aturation Dark
Rise time
detection error *3
coefficient
capacitance Position
4
photocurrent * current
tr
resolution
of
E
Ct
VR=5 V
VR=5 V
ID
VR=5 V
D
R=5 V
*5
I
V
R L =1 kΩ VR=5 V
R L =1 kΩ
f=10
kHz
light spot φ200 µm
TCID
Typ. Max.
Typ. Max. Typ. Max.
(µA) (nA) (nA) (times/° C) (µs)
(pF)
(µm)
(kΩ) (kΩ) (µm) (µm)
140 180 ±15
±60
40
0.1 5
2.5
20
0.1
±30 ±120
0.15 10
1.5
40
0.2
50
80
100
±60 ±240
0.2 20 1.15
3.0
80
0.3
20
30 ±125 ±500
250
2 150
0.7
150
2.1
15
20 ±100 ±400
300
0.5 20
1.0
100
2.8
(B): visible-cut resin coating.
Interelectrode
resistance
Rie
Vb=0.1 V
Min.
(A/W) (kΩ)
100
0.55
30
S3979
S3931
320 to 1100 920
S3932
0.6
10
S1352
700 to 1100 960
S3270
0.55 10
*1: K: borosilicate glass, R: clear resin coating, R
*2: Works with microscopic spot light detection.
*3: A range of 75 % of that from the center of the photosensitive surface to the edge.
*4: 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 %.
*5: 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 µA
Spot light size: φ 200 µm
Circuit system input noise: 1 µV (1 kHz)
Frequency range: 1 kHz
Interelectrode resistance: Typical value (refer to the specification table)
1
One-dimensional PSD
S3979, S3931, S3932, S1352, S3270
■ Spectral response
■ Photo sensitivity temperature characteristics
(Typ. Ta=25 ˚C)
0.8
TEMPERATURE COEFFICIENT (%/˚C)
PHOTO SENSITIVITY (A/W)
0.6
S1352
S3979
S3931
S3932
0.4
0.2
S3270
QE=50 %
0
400
600
800
(Typ.)
+2.0
QE=100 %
+1.5
+1.0
S1352, S3270
0
-0.5
300
1000
S3979, S3931, S3932
+0.5
WAVELENGTH (nm)
400
500
600
700
800
900
1000 1100
WAVELENGTH (nm)
KPSDB0070EA
KPSDB0069EA
■ Dark current vs. reverse voltage
■ Terminal capacitance vs. reverse voltage
(Typ. Ta=25 ˚C)
10 nA
S1352
TERMINAL CAPACITANCE
S3270
DARK CURRENT
1 nA
100 pA
S3932
S3931
S3979
10 pA
1 pA
0.1
1
10
100
REVERSE VOLTAGE (V)
S1352
1 nF
S3270
S3932
100 pF
S3931
10 pF
1 pF
0.1
S3979
1
10
100
REVERSE VOLTAGE (V)
KPSDB0071EA
2
(Typ. Ta=25 ˚C, f=10 kHz)
10 nF
KPSDB0072EA
S3979, S3931, S3932, S1352, S3270
One-dimensional PSD
■ Example of position detectability (Ta=25 °C, λ=900 nm, spot light size: φ0.2 mm)
S3979
S3931
+150
POSITION DETECTION ERROR (mm)
POSITION DETECTION ERROR (mm)
+150
+100
+50
0
-50
-100
+100
+50
0
-50
-100
-150
-150
-1.5
-1.0
-0.5
0
+0.5
+1.0
POSITION ON PSD (mm)
-3
+1.5
-2
-1
+1
+2
+3
POSITION ON PSD (mm)
KPSDB0010EB
S3932
KPSDB0011EB
POSITION DETECTION
ERROR (µm)
S1352
+150
+100
+125
-125
-15
-10
-5
0
+5
+10
+15
POSITION ON PSD
+50
KPSDC0023EB
S3270
POSITION DETECTION
ERROR (µm)
POSITION DETECTION ERROR (mm)
0
0
-50
+100
-100
-20
-15
-10
-5
0
+5
+10 +15 +20
POSITION ON PSD
KPSDC0068EA
■ Dimensional outlines (unit: mm)
-100
S3979
-150
-5
-4
-3
-2
-1
0
+1 +2 +3 +4 +5 +6
POSITION ON PSD (mm)
KPSDB0012EB
X
ACTIVE AREA
■ Conversion formula of spot light position on the PSD
9.2 ± 0.2
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.
8.1 ± 0.1
2.7
WINDOW
5.9 ± 0.1
4.1 ± 0.2
-6
L
x
I2 - I1
2x
=
I1 + I2
L
PHOTOSENSITIVE
SURFACE
13.7
X2
X1
0.45 LEAD
ACTIVE AREA
KPSDC0010EA
■ Correction for position detection error
Position detection characteristics obtained by the above
formula can be corrected to reduce position detection
errors. For example, the maximum position detection
error (±120 µm) of S3931 can be significantly reduced
to ±9 µm by using the least square method.
5.08 ± 0.2
ANODE (X2)
ANODE (X1)
CATHODE (COMMON)
CONNECTED TO CASE
KPSDA0007EC
3
S3979, S3931, S3932, S1352, S3270
One-dimensional PSD
S3932
9.2 ± 0.2
15.2 ± 0.2
4.8 ± 0.2
PHOTOSENSITIVE
SURFACE
ACTIVE AREA
PHOTOSENSITIVE
SURFACE
(4 ×)0.25
0.7
4.0
4.0
1.5 ± 0.2
5.08 ± 0.3
1.5 ± 0.2
0.7
(4 ×)0.25
X
X
5.08 ± 0.3
ACTIVE
AREA
4.8 ± 0.2
S3931
CATHODE (COMMON)
ANODE (X2)
CATHODE (COMMON)
ANODE (X1)
(4 ×) 0.4
5.08 ± 0.3
CATHODE (COMMON)
ANODE (X2)
CATHODE (COMMON)
ANODE (X1)
(4 ×) 0.4
10.16 ± 0.4
KPSDA0048EA
KPSDA0049EA
S3270
2.0
S1352
(2 ×)
51.5 ± 0.5
5.5 ± 0.25
ACTIVE AREA
55 ± 0.5
9.0 ± 0.2
57.0 ± 0.6
2.2
3.0
42.3 ± 0.4
1.0
5.0 ± 0.2
X
X
(2 ×) R1.1
10.0
3.75 ± 0.25
19.05
1.4
0.75 t GLASS
(2 ×) R2.2
PHOTOSENSITIVE
SURFACE
1.0
1.25
PHOTOSENSITIVE
SURFACE
5.0 ± 0.2
ACTIVE AREA
8.5 ± 1.5 2.5 ± 0.2
4.0
0.45 ± 0.05
LEAD
40.3 ± 0.4
19.05
1.7
0.75
LEAD
ANODE (X1)
CATHODE (COMMON)
ANODE (X2)
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. ©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
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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
4
Cat. No. KPSD1002E03
Jul. 2005 DN