C4757

C4674 HAMAMATSU | Alldatasheet

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Technical content

Features

/K6C No complicated adjustment required Position measurement can be made simply by mounting 2-D PSD. /K6C 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). /K6C Accurate position detection Accurate position data can be obtained, independent of light intensity. /K6C Compact on-board configuration A head amplifiers, signal addition/subtraction circuits, and analog divider are mounted on a compact PC board.

Applications

/K6C Displacement measurements using 2-D PSD /K6C Various studies using 2-D PSD /K6C Evaluation of 2-D PSD PSD Signal processing circuit for 2-D PSD Signal processing circuit designed to facilitate operation of 2-D Position Sensitive Detector C4674, C4757, C4758, C7563 I Four models are available to meet various 2-D PSD types PSD type DC signal processing circuit AC signal processing circuit Pin-cushion type PSD C4674 C7563 Duo-lateral type PSD C4757 - Tetra-lateral type PSD C4758 - G DC signal processing circuit Suitable for DC light displacement measurement. G AC signal processing circuit Designed specifically for pulse (AC) signal detection. Has a synchronous circui t, S/H (sample & hold) circuit and LED driver circuit. Use of a pulse-driven LED ensures reliable operation even under background light. IIII Combination with Hamamatsu 2-D PSD Each signal processing circuit can be used with the following Hamamatsu 2-D PSD. Pin-cushion type Duo-lateral type Tetra-lateral type S1880 S1881 S2044 S5990-01 S5991-01 S1300 S1200 C4674 O O *1 OO *2 O *2 C4757 O C4758 O C7563 O O *1 O O *2 O *2 *1: Connected externally *2: Using attachment board IIII Accessories The mating connectors to a power supply/signal readout device and the boards for mounting surface-mounting ceramic package PSD are supplied with each signal processing circuit. AccessoryType No. Supplied connector Attachment board C4674 HDEB-9S (m ade by Hirose Electric) for mounting S5990-01, S5991-01 C4757 - C4758 - C7563 HDAB-15S (m ade by Hirose Electric) for mounting S5990-01, S5991-01 PSD Signal processing circuit

Signal processing circuit for 2-D PSD C4674, C4757, C4758, C7563 The followings are obtained with the conditions listed on the left. Output voltage amplitude V FS (X)=±6 V VFS (Y)=±6 V Position resolution ∆x=0.1 µm approx. (calculated values) ∆y=0.1 µm approx. I Absolute maximum ratings DC circuit AC circuitParameter Symbol C4674 C4757 C4758 C7563 Unit Supply voltage Vcc Max. ±18 V Input current IIN Max. Vcc Max. × 10-5 A Output short-circuit time - Continuous s Signal processor Operating temperature Topr 0 to +50 °C Transistor collector-emitter voltage V CE --- + 50 V Transistor collector current * 3 IC - - - 2 ALED driver Transistor collector dissipation * 3 Pc - - - 900 mW I Specifications (Ta=25 °C, Vcc=±15 V) Typical value DC circuit AC circuitParameter Symbol Condition C4674 C4757 C4758 C7563 Unit Head-amp conversion impedance *4 Rf Factory setup prior to shipping 1 × 105 V/A Feedback capacitance Cf Factory setup prior to shipping 100 22 pF Input signal current *5 IIN Photocurrent with PSD installed 1 × 10-5 to 1 × 10-4 A Rise time tr Output response time versus movement of light spot position, measured with PSD installed. 30 µs PSD reverse bias voltage V R -+ 5V Output offset voltage VOS *7 -10 to +10 mV Output voltage amplitude * 6 Vo With PSD installed and light spot falling on edge of active area. -10 to +10 V Output noise (analog divider) Vn All range * 7 5 10 mVp-p Signal processor Current consumption Icc * 7 ±15±60 mA Transistor collector current Ic *3 - - - 680 mAp-p Repetition frequency f T *8 - - - 333 HzLED driver Output type - - - - - Open collector - *3: Duty ratio: 3/100, pulse width: 90 µs, LED: Hamamatsu L1915-01 (sold separately) *4: These resistors are lead types and inserted into sockets, so it can be easily to exchange by the user if necessary in a ran ge between 1 × 10 4 to 1 × 106 Ω. For more details, see the instruction manual that comes with the product. *5: The circuit does not operate correctly when input signal level is not appropriate. *6: Maximum output amplitude can be adjusted in a range of ±2 to ±10 V according to PSD type to be used. *7: Measured without PSD and with LED turned off, while using a current source of 20 µA (X1=X2=Y1=Y2) substituting for PSD photocurrent. In the case of C7563, however, pulse current with a duty ratio of 3/100 and a pulse width of 90 µs is supplied. *8: Repetition frequency 333 Hz (duty ratio: 3/100, pulse width: 90 µs) cannot be modulated. Constant voltage power supply: ±15 V, Power capacity: 0.1 A Min. Ripple voltage: 3 mVp-p Max. SIGNAL PROCESSING CIRCUIT C4674 2-D PSD REGULATED POWER SUPPLY * VOLTMETER VOLTMETER +15 V 0 V -15 V GND Xout + GND - Yout + GND - VR I Operating example (C4674) KPSDC0034ED Condition 1. Light source LED ( λ=900 nm) 2. Light spot diameter φ200 µm 3. PSD used S1880 (12 × 12 mm) 4. PSD photocurrent 10 µA 5. Signal processing circuit C4674 6. Frequency bandwidth 10 Hz 7. Voltmeter KEITHLEY model 195 A

Signal processing circuit for 2-D PSD C4674, C4757, C4758, C7563 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 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. KPSD1005E06 Apr. 2003 DN 0 +L/2-L/2 -L/2 +L/2 0X1 ACTIVE AREA L × L mm I 2-D PSD and output voltage KPSDC0032EB KPSDC0033EA OUTPUT VOLTAGE (Xout or Yout) (V) +L/2 +L/2 -L/2 -L/2 POSITION OF LIGHT SPOT (mm) Pin-cushion type Duo-lateral type Tetra-lateral typeParameter S1880 S1881 *9 S2044 S5990-01 S5991-01 S1300 S1200 Unit Active area length L 12 22 4.7 4 9 13 13 mm *9: The position (mm) of light spot from the center is twice the output voltage (V) for the S1881. If the incident light spot is not sufficiently focused on the PSD, i.e., the light spot diameter is large, and falls upon near the edge of the active area, part of the light spot may go outside the active area, thus degrading position accuracy. The output voltage amplitude values listed above are measured when the light spot diameter is made as small as possible within the range in which adequate intensity is maintained. CENTER OF MOUNTED PSD D-SUB CONNECTOR (4 ×) 3.2 a c d b THROUGH HOLES FOR EXTERNALLY CONNECTED PSD 15.5 MAX. b b Symbol a b c d C4674 C4757 C4758 C7563 110 102 PSD * * PSD is not mounted on this board. I Dimensional outline (unit: mm, tolerance: ±0.2 mm) KPSDA0018EC