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).
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Small on-board type for easy assembly
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Usable with photodiodes having large terminal
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Features
Applications
capacitance
Conversion impedance: 1.0 × 10
8
V/A
Single +12 V supply voltage operation
Small board size: 50 (W) × 50 (H) × 19 (D) mm
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Low-light-level detection
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Low-light-level optical power meters
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DC light monitors
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Absolute maximum ratings
Parameter
Maximum voltage
Operating temperature *
1
Storage temperature *
1
*1: No condensation
Symbol
Vcc Max.
Topr
Tstg
Value
+16
0 to +50
-10 to +60
Unit
V
°C
°C
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Electrical and optical characteristics (Ta=25
°C,
Vcc=+12 V)
Parameter
Conversion impedance
Frequency bandwidth
Input photocurrent range
Maximum output amplitude
Output offset voltage
Equivalent noise input current
Output noise voltage
Symbol
Tz
fc
Isc
Vo
Vos
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N
Condition
C9051 board, -3 dB
*
2
R
L
=1 kW
C9051 board
Without photodiode, f=1 Hz
Without photodiode,
full bandwidth
Min.
-
DC
0
4.0
-5
-
-
Typ.
1 × 10
8
-
-
-
-
-
-
Max.
-
16
40
-
5
5 × 10
-13
0.5
Unit
V/A
Hz
nA
V
mV
A/Hz
1/2
mVp-p
e
np-p
Output resistance
Ro
-
100
-
W
Maximum input capacitance
C
IN
-
-
15
nF
Maximum capacitive load
C
L
-
-
1000
pF
Current consumption
Icc
Without photodiode
-
-
20
mA
3
Supply voltage
Vcc
*
+9
+12
+15
V
Power supply ripple voltage Vcc
RIPPLE
*
4
-
-
200
mVp-p
*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.
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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
HAMAMATSU [ HAMAMATSU CORPORATION ]
