Datasheet C4675-302, C4675-102 Datasheet (HAMAMATSU)

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

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Wide spectral response: 400 to 1000 nm

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Wide active area: 17.45 × 17.45 mm

(0.95 × 0.95 mm per element, 1.1 mm pitch)

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Frequency response C4675-102: DC to 1 kHz

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Parallel signal output by current-to-voltage amplifier

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Low power consumption: 2.5 W Typ.

■

General ratings

Parameter Rating Unit

Photodiode Si PIN photodiode array (Made by Hamamatsu S4529) ­Number of element 16 × 16 (256) ­Active area (per 1 element) 0.95 × 0.95 mm
Element pitch 1.1 mm
Output type Current-to-voltage conversion method, 256-ch parallel analog voltage output ­Dimensional outline 136 (W) × 136 (H) × 153.5 (D) mm
Weight 2.1 kg

■

Absolute maximum ratings

Parameter Symbol Value Unit

Operating temperature Topr 0 to +50 °C
Storage temperature Tstg -10 to +60 (no condensation) °C
Supply voltage Vs ±18 V

C4675-302: DC to 3 kHz
C4675-103: DC to 10 kHz

Applications

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Nerve potential measurement under microscope

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2-D (wavelength × spatial position) spectrophotometry
in visible range

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Fine-modulation light measurement

■

Electrical and optical characteristics (Typ. Ta=25 °C)

Parameter Symbol C4675-102 C4675-302 C4675-103 Unit

Spectral response range
Output uniformity - ±15 %
Amp gain - 10
Frequency response - DC to 1 k DC to 3 k DC to 10 k Hz
Supply voltage Vs ±15 V
Current consumption P 2.5 W

■

Construct device

Product name Type No. Number Note

Two-dimensional detector C4675 series 1
Dedicated cable 8840S-080-174AD-150-W 4 Made by KEL, length 1.5 m
Output connector 8850-080-170SD 4 Made by KEL, on-board straight installation type

λ

8

400 to 1000 nm

5 × 10

7

10

7

V/A

16 × 16 element photodiode array detector

C4675-xxx

C4675 series

■ Spectral response

0.6

0.5

0.4

0.3

0.2

PHOTO SENSITIVITY (A/W)

0.1

0

400

300

500

QE=100 %

600 700 800 900 1000

(Ta=25 ˚C)

QE=50 %

1100

■ F requency response

10

0

-10
C4675-102

-20

RELATIVE OUTPUT (5 dB/div.)

-30

C4675-302

10.1

(Typ. Ta=25 ˚C)

C4675-103

10 100

FREQUENCY (kHz)

WAVELENGTH (nm)

KACCB0001EA

■ 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.

KACCB0002EB

LED

HAMAMATSU

C4675-xxx

Vo

FFT

SWEEP

GENERATOR

KACCC0002EA

16 × 16 element photodiode array detector

LOW NOISE BIAS CIRCUIT

+15 V

GND

-15 V

CH 1

CH 2

INCIDENT LIGHT

Ip

Rf

Cf (1p)

-15 V

GND

+15 V

CH256

Rf

Ip

Cf (1p)

Rf

Ip

Cf (1p)

-

+

-

+

-

+

C4675-xxx

C4675-xxx

C4675-xxx

C4675 series

■ 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 Feedback capacitance

100 M

Ω

50 M
10 M

Ω
Ω

1 pF

■ Application example

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Nerve potential measurement under microscope

■ Block diagram

KACCC0001EA

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2-D spectrophotometry in visible range

FIBER

SPECTRUM

RECEPTACLE

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Fine-modulation light measurement

CHOPPER

HAMAMATSU

HAMAMATSU

HAMAMATSU

C4675-xxx

C4675-xxx

C4675-xxx

AC

GAIN AMP

GAIN AMP

LOCK IN AMP

DATA PROCESSING DEVICE

SH

MUX ADC

MEMORY

KACCC0003EA

16 × 16 element photodiode array detector

C4675 series

■ Dimensional outline (unit: mm)

136

136

PCD80 (4 ×) M3 DEPTH 4

22.0

94

151

2.5

HAMAMATSU

C4675-xxx

7.1 (POSITION OF PHOTOSENSITIVE SURFACE)

0.95

+

×

CN. 4

+

+

×

CN1 TO CN4
(MADE BY KEL 8850-080-170L)

CN. 1

+

+

CN. 3

+

0.15

0.95

+

×

CN. 2

+

+

+

+

×

+

KACCA0001EA

22.0

0.15

17.45

0.95

1.10

0.95

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: [phone], Fax: [phone], 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: [phone], Fax: [phone]
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: [phone], Fax: [phone]
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: [phone], Fax: [phone]
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: [phone], Fax: [phone]
North Europe: Hamamatsu Photonics Norden AB: Smidesvägen 12, SE-171 41 Solna, Sweden, Telephone: [phone], Fax: [phone]
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: [phone], Fax: [phone]

Cat. No. KACC1001E02
Apr. 2001 DN