HAMAMATSU C9051 Datasheet

MODULE

Photosensor amplifier

C9051

Small on-board type current-to-voltage conversion amp

C9051 is a current-to-voltage conversion amplifier specifically designed for low-light-level measurement using a photodiode (sold separately).

Features Applications

l

Small on-board type for easy assembly

l

Usable with photodiodes having large terminal
capacitance

l

Conversion impedance: 1.0 × 10

l

Single +12 V supply voltage operation

l

Small board size: 50 (W) × 50 (H) × 19 (D) mm

8

V/A

■ Absolute maximum ratings

Parameter Symbol Value Unit

Maximum voltage Vcc Max. +16 V
Operating temperature *
Storage temperature *
*1: No condensation

1

1

Topr 0 to +50
Tstg -10 to +60 °C

l

Low-light-level detection

l

Low-light-level optical power meters

l

DC light monitors

°C

■ Electrical and optical characteristics (Ta=25 °C, Vcc=+12 V)

Parameter Symbol Condition Min. Typ. Max. Unit

Conversion impedance Tz - 1 × 10
Frequency bandwidth fc C9051 board, -3 dB DC - 16 Hz
Input photocurrent range Isc *
Maximum output amplitude Vo RL=1 kW 4.0 - - V
Output offset voltage Vos C9051 board -5 - 5 mV
Equivalent noise input current I

Output noise voltage

Output resistance Ro - 100 ­Maximum input capacitance C
Maximum capacitive load C
Current consumption Icc Without photodiode - - 20 mA
Supply voltage Vcc *
Power supply ripple voltage Vcc
*2: When connecting a photodiode to C9051, the cathode should be connected to the IN terminal of C9051 and the anode

grounded. Photocurrent input from the photodiode will be negative with respect to the amplifier.

*3: If not using the AC adapter that comes with C9051, set the power supply voltage within this range. A separate adapter plug

will be required for power input to C9051.

*4: This is the maximum ripple allowed for the power supply when operated with all loads listed on the power supply specification

sheet, excluding switching noise that might appear superimposed on the ripple. When not using the AC adapter that comes
with C9051, always make sure that the power supply output does not contain excessive ripple and noise.

N

np-p

e

RIPPLE

2

Without photodiode, f=1 Hz - - 5 × 10
Without photodiode,

full bandwidth

IN

L

3

4

*

0 - 40 nA

- - 0.5 mVp-p

- - 15 nF

- - 1000 pF

+9 +12 +15 V

- - 200 mVp-p

8

-V/A

-13

A/Hz

W

1/2

■■■■Usable photodiodes

Any single-element photodiode with a terminal capacitance below 15 nF can be used.
In photometric applications requiring high accuracy, we recommend using metal package or ceramic package photodiodes.
For detailed information refer to individual data sheets for our photodiodes.

NOTE) C9051 cannot be used with multi-element photodiodes, photodiodes with preamplifier, APD (avalanche photodiodes),

photo IC diodes and reverse-biased photodiodes.

PRELIMINARY DATA

Aug. 2002

1

Photosensor amplifier

ANODE

PHOTODIODE

SHIELD CASE, etc.

CONNECT TO SHIELD CASE

SOLDER

COAXIAL CABLE WITH BNC PLUG

CATHODE

C9051

■ Connection example

DC + 12 V

LARGE AREA PHOTODIODE

ANODE

CATHODE

SHIELD

COAXIAL CABLE WITH BNC PLUG
(See "Typical connection to photodiode")

PHOTOSENSOR AMPLIFIER C9051

BNC-BNC
COAXIAL CABLE

OSCILLOSCOPE

VOLTMETER

+ 5 V INPUT A/D

SERIAL CONVERSION

OUTPUT

PC, etc.

■ Typical connection to photodiode

• To connect a photodiode to C9051, use a coaxial cable terminated with a
BNC plug. The cable length (capacitance) should be less than 15 nF
including photodiode terminal capacitance.

• Solder the photodiode leads to connect the tip of the cable wire. (See the
drawing on the right.)
Anode: Connect to the shield wire of the cable. (Make electrical connection
with the shield.)
Cathode: Connect to the core wire of the cable.

• To improve measurement accuracy, provide a shield around the photodiode.
Do not use a cable any longer than necessary. (Keep the cable as short as
possible.)

NOTE) When using a photodiode whose cathode is internally connected to its

metal package, secure the photodiode with an insulating material
when shielding. Otherwise, signal current cannot be drawn when the
photodiode package is grounded.

LOW-LIGHT-LEVEL
DETECTION

LOW-LIGHT-LEVEL
OPTICAL POWER METERS

DC LIGHT MONITORS
TEST/MEASUREMENT
EQUIPMENT

KACCC0179EA

KACCC0180EA

■ Dimensional outline (unit: mm)

OUTPUT
TERMINAL

50 ± 1

42 ± 0.5(19 ± 1)

2.0 MAX.

(85 ± 3)

OUT IN

42 ± 0.5

50 ± 1

AC ADAPTER JACK DC + 12 V IN

PHOTODIODE PHOTOCURRENT
INPUT TERMINAL

(4 ×) 3.2 THRU-HOLE
(FOR BOARD MOUNTING)

KACCA0116EA

■ Accessory

AC adapter

Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.

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]

2

Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ©2002 Hamamatsu Photonics K.K.

Cat. No. KACC1080E01
Aug. 2002 DN