PHOTODIODE
16 × 16 element photodiode array detector
C4675 series
2-D detector using 256-element photodiode with visible sensitivity
C4675 series is a two-dimensional detector using a 16 × 16 (256) element Si PIN photodiode array that has high sensitivity in the visible range. Current-to-voltage conversion amplifiers in the signal amplifier section are connected in parallel to each element of the photodiode array, thereby allowing high-speed parallel signal processing. C4675 series is also designed to suppress the power consumption so it operates from two power supplies (±15 V).
Features
Applications
l Wide spectral response: 400 to 1000 nm l Wide active area: 17.45 × 17.45 mm (0.95 × 0.95 mm per element, 1.1 mm pitch) l Frequency response C4675-102: DC to 1 kHz
C4675-302: DC to 3 kHz C4675-103: DC to 10 kHz l Parallel signal output by current-to-voltage amplifier l Low power consumption: 2.5 W Typ.
l Nerve potential measurement under microscope l 2-D (wavelength × spatial position) spectrophotometry in visible range l Fine-modulation light measurement
s General ratings
Parameter Photodiode Number of element Active area (per 1 element) Element pitch Output type Dimensional outline Weight Rating Si PIN photodiode array (Made by Hamamatsu S4529) 16 × 16 (256) 0.95 × 0.95 1.1 Current-to-voltage conversion method, 256-ch parallel analog voltage output 136 (W) × 136 (H) × 153.5 (D) 2.1 Unit mm mm mm kg
s Absolute maximum ratings
Parameter Operating temperature Storage temperature Supply voltage Symbol Topr Tstg Vs Value 0 to +50 -10 to +60 (no condensation) ±18 Unit °C °C V
s Electrical and optical characteristics (Typ. Ta=25 °C)
Parameter Spectral response range Output uniformity Amp gain Frequency response Supply voltage Current consumption Symbol λ Vs P
C4675-102
108 DC to 1 k
C4675-302 400 to 1000 ±15 5 × 107 DC to 3 k ±15 2.5
C4675-103
107 DC to 10 k
Unit nm % V/A Hz V W
s Construct device
Product name Two-dimensional detector Dedicated cable Output connector Type No. C4675 series 8840S-080-174AD-150-W 8850-080-170SD Number 1 4 4 Note Made by KEL, length 1.5 m Made by KEL, on-board straight installation type
16 × 16 element photodiode array detector
s Spectral response
0.6 (Ta=25 ˚C)
C4675 series
(Typ. Ta=25 ˚C)
s Frequency response
10
RELATIVE OUTPUT (5 dB/div.)
PHOTO SENSITIVITY (A/W)
0.5
E= 10 0
%
C4675-103 0
Q
0.4
QE
=
% 50
0.3
-10 C4675-102
0.2
-20
C4675-302
0.1
0 300 400
500
600
700
800
900 1000 1100
-30 0.1
1
10
100
FREQUENCY (kHz)
WAVELENGTH (nm)
KACCB0001EA KACCB0002EB
s Measurement method for frequency characteristics
The LED output was adjusted so that the output voltage Vo from C4675 series is set to 5 V. Under this condition, the output of C4675 series was monitored by FFT while sweeping the LED drive frequencies.
LED
HAMAMATSU
C4675-xxx
Vo FFT
SWEEP GENERATOR
KACCC0002EA
16 × 16 element photodiode array detector
s Operating principle
When light enters a photodiode, photoelectric conversion occurs in the photodiode and the photocurrent Ip is generated. The photocurrent Ip then flows through the current-tovoltage conversion amplifier feedback resistance Rf and is output as voltage V (=Ip × Rf). C4675 series uses current-to-voltage conversion amplifiers connected to each of the 256-element photodiodes to perform parallel signal processing. A low noise bias circuit is also used to reduce the photodiode junction capacitance. Type No. C4675-102 C4675-302 C4675-103 Feedback resistance 100 MΩ 50 MΩ 10 MΩ Feedback capacitance 1 pF
C4675 series
s Block diagram
Ip INCIDENT LIGHT Cf (1p) + Ip Rf Cf (1p) + CH 2 CH 1 Rf
Rf Ip Cf (1p) + LOW NOISE BIAS CIRCUIT +15 V GND -15 V CH256 +15 V GND -15 V
KACCC0001EA
s Application example
l Nerve potential measurement under microscope
HAMAMATSU
C4675-xxx
AC
GAIN AMP DATA PROCESSING DEVICE
l 2-D spectrophotometry in visible range
SH
MUX
ADC
MEMORY
HAMAMATSU
C4675-xxx
GAIN AMP
FIBER SPECTRUM RECEPTACLE
l Fine-modulation light measurement
HAMAMATSU
C4675-xxx
LOCK IN AMP
CHOPPER
KACCC0003EA
16 × 16 element photodiode array detector
s Dimensional outline (unit: mm)
151 136 2.5
C4675 series
×
×
+
CN. 1
+
94
136
HAMAMATSU
C4675-xxx
+
+
CN. 3
+
+
×
PCD80 (4 ×) M3 DEPTH 4
7.1 (POSITION OF PHOTOSENSITIVE SURFACE)
CN1 TO CN4 (MADE BY KEL 8850-080-170L)
KACCA0001EA
22.0
0.15 0.95 17.45 22.0 0.95 0.15
1.10
1.10 17.45
DETAILS
DETAILS OF ACTIVE AREA (16 × 16 element photodiode array S4529)
KACCA0002EA
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. ©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: 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
0.95
0.95
+
+
+
×
CN. 4 +
+
+
CN. 2
Cat. No. KACC1001E02 Apr. 2001 DN