C5658 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – APD module

MODULE
APD module
C5658
Detects optical signals at 1 GHz, with high sensitivity
APD module C5658 is a highly sensitive photodetector consisting of a Si APD (avalanche photodiode), a bias power supply and a low-noise
amplifier, all integrated into a compact case. The APD used has an effective active area of φ0.5 mm to allow efficient coupling to a light beam in
applications such as spatial light transmission. The APD internally multiplies the photocurrent to produce an ample gain (set to 100 times for
C5658) and also features high-speed response, achieving detection limits up to 1 GHz wideband and -48 dBm (16 nWr.m.s.) noise level in
combination with the low-noise amplifier. C5658 also incorporates a thermosensor and a temperature-compensated bias power supply necessary
for stable operation of the APD. Highly sensitive optical measurements can be made just by supplying +12 V to C5658.
Features
Applications
l High-speed response and high sensitivity
l Flat frequency characteristics
l Compact and lightweight
l Single power supply operation
l Laser radar
l Spatial light transmission
l Optical rangefinder
s Absolute maximum ratings
Parameter
Condition
Value
Unit
Supply voltage
+13.5
V
Maximum incident light level Continuous input
10
mW
Operating temperature
0 to +50
°C
Storage temperature
-30 to +80
°C
s Electrical and optical characteristics (Ta=25 °C, Vcc=12 V, output terminated with 50 Ω)
Parameter
Condition
Typ.
Unit
Spectral response range
400 to 1000
nm
Active area
φ0.5
mm
Quantum efficiency
λ=800 nm
70
%
Cut-off frequency (-3 dB)
Detection sensitivity
High band
Low band
λ=800 nm
1
1
2.5 × 10⁵
GHz
MHz
V/W
Gain stability
25 °C ± 10 °C
±5.0
%
Noise level
Dark state
-48
dBm
Output impedance
50
Ω
VSWR *
1.5
-
Compression point at 1 dB
3
µW
* VSWR (Voltage Standing Wave Ratio)
If internal matching of elements on a signal transmission line (matching between element input/output impedance and signal line
impedance) is poor, signal reflections occur that generate standing waves on the signal line. The VSWR is the ratio of standing
wave maximum amplitude (V Max.) to minimum amplitude (V Min.) and indicates how well the impedance is internally matched.
When this internal matching is complete, no standing waves exit and the VSWR is 0 (zero).
s Signal connector
Parameter
Signal output
Power supply connector
Standard
SMA
D-sub 9 pin
s General specifications
Parameter
Condition
Value
Unit
Supply voltage
+12 ± 0.1
V
Current consumption
100
mA
Dimensional outline
Excluding projecting parts
28 × 50 × 60
mm
Weight
120
g