Datasheet

Signal processing circuit for 2-D PSD
C4674-01
Circuit board for easier 2-D PSD operation
The C4674-01 is a DC signal processing circuit for two-dimensional PSD. It is suitable for displacement measurements using
DC light.
Features
Applications
No complicated adjustments required
Position measurement of a light spot can be made
simply by mounting 2-D PSD.
Displacement measurements using DC light
Output voltage directly representing the position data
The position (mm) of a light spot from the PSD center
is obtained as an output voltage (V).
Various studies using 2-D PSD
Performance evaluation of 2-D PSD
Accurate position sensing
Position data of light spot is independent of incident
light intensity.
Three sensitivity ranges
Compact design
Head amp, signal addition/subtraction circuits, and
analog divider circuit are mounted on a compact PC
board.
Absolute maximum ratings (Ta=25 °C unless otherwise noted)
Parameter
Supply voltage
Operating temperature*1
Storage temperature*1
Input voltage
Output short-circuit time
Symbol
Vcc max
Topr
Tstg
VIN max
-
Value
±18
0 to +50
-10 to +60
Vcc max
Continuous
Unit
V
°C
°C
V
s
*1: No dew condensation
When there is a temperature difference between a product and the surrounding area in high humidity environment, dew condensation
may occur on the product surface. Dew condensation on the product may cause deterioration in characteristics and reliability.
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings.
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1
Signal processing circuit for 2-D PSD
C4674-01
Specifications (Ta=25 °C, Vcc=±15 V)
Parameter
Symbol
Head amp conversion impedance
Rf
*2
Head amp feedback capacitance
Cf
*2
Input signal current
IIN
*3
Tr
VOH
VOL
Vn
Vos
Tr
VOH
VOL
Vn
Vos
Tr
*4
Rise time
High
Head amp
Output voltage
Low
differential output
(V1 ,V2)
Output noise voltage
Output offset voltage
Rise time
High
Sum signal output Output voltage
Low
(V3)
Output noise voltage
Output offset voltage
Rise time
Maximum output
Position signal out- amplitude voltage
put (V4, V5)
Output noise voltage
Output offset voltage
Vo
Vn
Vos
PSD reverse bias voltage
VR
Supply voltage
Current consumption
Vcc
Icc
Condition
H range
M range
L range
H range
M range
L range
H range
M range
L range
*5
*5
*4
*5
*5
*4
Factory setup
prior to shipping*6
*5
*5
Factory setup
prior to shipping*7
*8
*5
Min.
1 × 10-6
1 × 10-5
1 × 10-4
+13.5
-5
+13.5
-5
-
Typ.
1 × 106
1 × 105
1 × 104
10
100
1000
22
+13.8
-13.8
2
22
+13.8
0
2
22
Max.
1 × 10-5
1 × 10-4
1 × 10-3
30
-13.5
+5
30
+5
30
Unit
±6.8
±7
±7.2
V
-70
5
-
+70
mVp-p
mV
+4.9
+5
+5.1
V
±14.5
-
±15
±15
±15.5
-
V
mA
V/A
pF
A
μs
V
mVp-p
mV
μs
V
mVp-p
mV
μs
*2: Factory setup prior to shipping is M range. The range can be switched with the jumper on the board.
*3: Photocurrent Isc with PSD installed (total input signal). PSD does not operate correctly if the input signal current is outside the
specified range.
*4: Output response time 10 to 90%
*5: With no PSD installed. Current signal that substitutes for PSD photocurrent (L range: X1=X2=Y1=Y2=200 μA, M range:
X1=X2=Y1=Y2=20 μA, H range: X1=X2=Y1=Y2=2 μA) is input. When maximum output amplitude voltage Vo=±7 V is set.
*6: Factory setup prior to shipping is ±7 V. Maximum output amplitude can be adjusted in a range of ±2 to ±10 V with a variable resistor
on the board according to the PSD type to be used.
*7: Factory setup prior to shipping is +5 V. The voltage can be adjusted in the range of 0 to +14 V with a variable resistor on the
board.
*8: Switching power supplies are not supported. Use a series power supply (with 3 mVp-p or less ripple voltage).
Combination with a PSD
A PSD is installed (soldered) on the signal processing circuit.
Note: PSDs are sold separately.
Type no.
S1880
S2044
Photosensitive
area size
(mm)
12 × 12
4.7 × 4.7
S5990-01
4×4
S5991-01
9×9
Package
(mm)
Installation on
board
Using dedicated
board
External*9
attachment
Ceramic (φ28)
Metal (TO-8 φ14)
Ceramic chip carrier
(8.8 × 10.6)
Ceramic chip carrier
(14.5 × 16.5)
○
○
×
×
○
○
×
○
○
×
○
○
*9: Wiring using shielded wires or AWG#26 or equivalent twisted pair wires (no longer than 30 cm) is recommended.
2
Signal processing circuit for 2-D PSD
C4674-01
PSD and output voltage
With the D-sub connector on top, the output corresponding to the horizontal position (converted output voltage of the X position) is
output from D-sub connector terminal No. 1 (V5), and the output corresponding to the vertical position (converted output voltage of
the Y position) is output from D-sub connector terminal No. 2 (V4).
D-sub connector
Output V4 or V5 (V)
C4674-01
L/2
PSD
installation
-L/2
0
L/2
Light spot
position
X or Y (mm)
-L/2
Incident light
(light spot)
Y
+L/2
KACCC0648EA
-L/2
X
PSD photosensitive area
L × L (mm2)
-L/2
+L/2
KACCC0650EA
Parameter
Photosensitive area length
Output voltage amplitude
Symbol
L
V4 (X)
V5 (Y)
S1880
12
±6
±6
Two-dimensional PSD
S2044
S5990-01
4.7
4
±2.35
±2
±2.35
±2
S5991-01
9
±4.5
±4.5
Unit
mm
V
V
3
Signal processing circuit for 2-D PSD
C4674-01
Connection example
Measured light (DC light)
Two-dimensional PSD (sold separately)
+15 V
GND
-15 V
Dual power supply (±15 V, 0.1 A or more)
Be sure to use a dual power supply.
Switching power supplies are not supported.
Use a series power supply (with 3 mVp-p or
less ripple voltage).
V5
GND
C4674-01
V4
GND
Voltmeter, oscilloscope, etc.
KACCC0652EB
Dimensional outline (unit: mm)
Through holes for
externally connected PSD
(7 ×) 1 (2.54 pitch)
65
3
59
1.6
3
S1880
1234567
17
PSD installation position

C4674-01
MADE IN JAPAN
Œ
Ž
S2044
84
90

(20)
(4 ×) 3.2
(4 ×) C2
15.5 max.
D-sub connector
(Hirose Electric: RDED-9P)
Tolerance: ±0.2
KACCA0304EA
4
Signal processing circuit for 2-D PSD
C4674-01
Pin connections
D-sub connector
Pin no.
1
2
3
4
5
6
7
8
9
Name
V5
V4
+V
-V
G
V3
V2
VR
V1
Content
X position signal output
Y position signal output
+15 V
-15 V
GND
Sum signal output (incident light level monitor output)
X position head amp differential output
PSD reverse bias voltage monitor output
Y position head amp differential output
Through holes for externally connected PSD
Pin no.
Name
Content
1
G
GND (for signal cable shield)
2
Y2
Connection to PSD anode terminal “Y2”
3
X2
Connection to PSD anode terminal “X2”
PSD reverse bias voltage output: connection to PSD cathode
4
VR
terminal
5
Y1
Connection to PSD anode terminal “Y1”
6
X1
Connection to PSD anode terminal “X1”
7
G
GND (for signal cable shield)
Accessories
∙ Instruction manual
∙ Connector HDEB-9S (Hirose Electric: for connections to power supply and output readout device)
∙ S5990-01/S5991-01 mounting board
Related information
www.hamamatsu.com/sp/ssd/doc_en.html
Precautions
∙ Disclaimer
Information described in this material is current as of June, 2016.
Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the
information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always
contact us for the delivery specification sheet to check the latest specifications.
The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that
one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use.
Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission.
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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
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, Bridgewater, N.J. 08807, 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) 8152-375-0, Fax: (49) 8152-265-8
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: Torshamnsgatan 35 16440 Kista, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6, 20020 Arese (Milano), Italy, Telephone: (39) 02-93581733, Fax: (39) 02-93581741
China: Hamamatsu Photonics (China) Co., Ltd.: B1201, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing 100020, China, Telephone: (86) 10-6586-6006, Fax: (86) 10-6586-2866
Cat. No. KPSD1005E09 Jun. 2016 DN
5
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