Signal processing circuit for 1-D PSD

C5923

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: 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

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. ©2003 Hamamatsu Photonics K.K.

Cat. No. KPSD1011E03

Apr. 2003 DN

s Dimensional outline (unit: mm, tolerance: ±0.2 mm)

KACCA0054EB

T erm inal No. Name

Content

2

VR

PSD bias voltage monitor output

3Vo

Divider output

(position-converted voltage)

4

K

C onnection to LED or other cathode

5A

C onnection to LED or other anode

6

+V

+15 V input

7

-V

-15 V input

8

G

GND

9

V1

Head amp output 1

10

V2

Head amp output 2

11

V3

Subtracted signal pulse output

12

V4

Summed signal pulse output

13

V5

Subtracted signal output after S/H *

14

V6

Sum m ed signal output after S/H *

15

G

GND

* S/H: sample hold

T erm inal No. Name

Content

1

IN1

Input from PSD output 1

2

G

GND

3VR

Bias voltage output for

connection to PSD cathode

4

G

GND

5

IN2

Input from PSD output 2

s PSD and output voltage

Measurement conditions

1. Light source: LED (

λp=900 nm)

2. Light spot:

φ200 µm

3. PSD: S1352 (L=34 mm)

4. PSD photocurrent: 10 µA

5. Frequency bandwidth: 10 Hz

6. Voltmeter: 195A (KEITHLEY)

7. Constant voltage power supply: ±15 V, power supply capacity:

0.2 A or more, ripple voltage: 3 mVp-p or less

When measured under the above conditions, the following output

voltage amplitude and position resolution can be obtained.

· Position resolution:

∆l=approx. 0.6 µm (calculated value)

s Accessories

· Connector HDAB-15S (HIROSE: For connections to power

supply and output readout device)

KACCB0040EB

KPSDC0062EA

KACCC0071EA

S1352, S3931 and S3932 (PSD made by Hamamatsu) can be

directly mounted on the board. To mount other types of 1-D

PSDs, use through holes on the board.

15.5 MAX.

D-SUB CONNECTOR

(Hirose Electric: RDAB-15P)

37.5

THROUGH HOLES FOR

EXTERNALLY CONNECTED PSD

37.5

67

75

PSD

INSTALLTION

POSITION

(4

×) 3.2

1

2

4

5

3

L

L/2

L/4

-L/4

-L/2

S1352, S3270

-L

-L/2

L/2

OUTPUT Vo (V)

LIGHT SPOT POSITION X (mm)

S3931, S3932

S3979

X

CENTER OF PSD ACTIVE AREA

LIGHT SPOT

PHOTOSENSITIVE

SURFACE

L

-

2

L

+

2

C5923

LED (LD) ANODE (+)

D-SUB CONNECTOR

LED (LD) CATHODE (–)

VOLTMETER

CONSTANT

VOLTAGE

POWER

SUPPLY

+15 V

–15 V

GND

+

–

G

+

–

PSD

X1

C

X2

1

5

6

7

8

3

4

5

s Operating example

2

s Input/output terminals