MODULE
APD module
C4777 series
APD module integrated with peripheral circuits
Features
Applications
C4777
Two types of APDs with different active areas
l
Spatial light transmission
(φ0.5 mm,
φ3.0
mm) are provided.
l
Choice of high sensitivity type and low-light-level detection type
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Optical communication
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Rangefinder
C4777 detects optical signals from 10 kHz to 100 MHz
pulsed light and is suitable for spatial light transmission and
C4777-01
rangefinder applications. C4777-01 provides a high photo-
l
Fluorescence measurement
electric sensitivity of 1.25 × 10
9
V/W and low NEP of 2 fW/Hz
1/2
,
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NOx monitor sensor
making it excellent for fluorescence measurement and NOx
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Particle counters
monitors where low-light-level detection is essential.
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Built-in temperature control circuit
An APD chip, thermoelectric cooler and thermosensor are
sealed in the same package along with the temperature
control circuit, to keep the APD chip temperature constant
and ensure stable measurements.
l
Simple operation
Operates by just connecting to a DC power supply (+5 V, ±15 V).
l
Uses high sensitivity APD
I
Selection guide
Parameter
Active area
Photo sensitivity
Frequency bandwidth
C4777
f0.5
-2.5 × 10
#
10 k to 100 M
C4777-01
f3.0
-1.25 × 10
'
DC to 5 k
Unit
mm
V/W
Hz
I
Block diagram
Si APD
SIGNAL OUTPUT
FIRST AMPLIFIER
SIGNAL LIGHT
TEMPERATURE
CONTROL CIRCUIT
POWER SUPPLY
BIAS CONTROL CIRCUIT
HIGH VOLTAGE
POWER SUPPLY
THERMOSENSOR
THERMOELECTRIC COOLER
KACCC0099EA
1
HAMAMATSU [ HAMAMATSU CORPORATION ]
