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www.hamamatsu.com
APD module
Variable gain, stable detection even at high gain
C10508-01
The C10508-01 consists of an APD, current-to-voltage converter, high-voltage power supply circuit as well as a microcontroller
for compensating temperature with high stability on the basis of information received from the temperature sensor. The
microcontroller contains coeffi cients according to the temperature characteristics of the APD. This allows highly stable APD
gain over a wide temperature range even at high gain. The gain can be adjusted using a switch on the circuit board or
commands from a PC.
DC 10 100 1 k 10 k 100 k 1 M 10 M 100 M 1 G
Sensitivity (V/W)
Response speed (Hz)
10
9
10
8
10
7
10
6
10
5
10
4
10
3
C12703-01
DC to 100 kHz
-1.5 × 10
8
V/W
C10508-01
DC to 10 MHz
1.5 × 106 to 1.5 × 107 V/W
C12703 series
DC to 10 MHz
1.5 × 10
6
V/W
C5658
50 kHz to 1 GHz
2.5 × 10
5
V/W
C12702 series
4 types available
for different photosensitive
areas and wavelengths
4 kHz to 100 MHz
-1 × 10
4
V/W
Gain temperature stability: ±5 % or less
(Gain=250, Ta=0 °C to +40 °C)
Adjustable gain
The gain can be adjusted with a switch or commands
sent from a PC.
Compact and lightweight
Easy handling: Requires only a ±5 V power supply.
Features
APD evaluation
Optical power meters
Low-light-level detection
Applications
Block diagram Sensitivity vs. response speed
±5 V
BNC connector
Microcontroller
(temperature compensation circuit)
Voltage
controller
High voltage generator
+200 V +5 V
APD
Temperature
sensor
I/O
High-speed
current-to-voltage
converter
KACCC0360EA
KACCB0355EA
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APD module C10508-01
Absolute maximum ratings (Ta=25 °C)
Parameter Symbol Value Unit
Positive supply voltage Vp +6 V
Negative supply voltage Vn -6 V
Maximum incident light level - 10 mW
Operating temperature* Topr 0 to +60 °C
Storage temperature* Tstg -20 to +70 °C
*
No condensation
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
Structure
Parameter Symbol Value Unit
Built-in sensor - S12023-10A -
Photosensitive area A
φ1.0
mm
Window material - Borosilicate glass -
Dimensions (W × D × H) - 60 × 60 × 22 mm
Weight - 37 g
Interface - Conforms to RS-232C -
Electrical characteristics
Parameter Symbol Condition Min. Typ. Max. Unit
Supply voltage Vs
+5V +4.6 +5.0 +5.4 V
-5V -4.6 -5.0 -5.4 V
Current consumption Ic
+5V - +50 +75 mA
-5V - -15 -25 mA
Output inpedance
Zo -50-
Ω
Feedback resistance
Rf - 10 - k
Ω
Latter-stage amplifi er gain
- - 10 - times
Output polarity
- Positive polarity -
Electrical and optical characteristics (Typ. Ta=25 °C, unless otherwise noted)
Parameter Symbol Condition Min. Typ. Max. Unit
Spectral response range
λ
400 to 1000 nm
Peak sensitivity wagvelength
λp
- 800 - nm
Photosensitivity S
M=1, λ=800 nm
- 0.5 - A/W
Cutoff frequency
High
fc
M=10 to 250, -3 dB
8 10 - MHz
Low -DC--
Gain M Adjustable by switch or serial communication -
Gain temperature stability -
M=10 to 250
Ta=0 to 40 °C
- - ±5 %
Photoelectric conversion sensitivity -
M=250, λ=800 nm
1.0 × 10
7
1.25 × 10
7
1.5 × 10
7
V/W
Noise equivalent power NEP
M=250, λ=800 nm
- 0.02 0.04 pW/Hz
1/2
Minimum detection limit -
M=250, λ=800 nm
- 63 126 pW rms
Saturation incident light level -
M=250, λ=800 nm
- 0.24 - μW