QDAX-500
InGaAs APDFET Receiver
I
I
I
I
I
Long-haul STM4/OC12 applications
High sensitivity, -40 dBm at 622 Mb/s
Low optical reflection
1300 and 1550 nm operation
Transimpedance amplifier
Description
The Corning Lasertron QDAX is a fiber-optic receiver utilizing an InGaAs APD followed
up with a fixed 4K Ohm transimpedance amplifier which offers superior sensitivity
required in long-haul applications. Packaged in a 14-pin DIL, the QDAX is pigtailed with
single-mode fiber and the amplifier has 50 Ohm output impedance.
Specifications
o
Contact Corning Lasertron regarding special requirements.
(Characteristics at 25 C, except as noted)
Min
Typ
Max
Optical Characteristics
Operating wavelength (nm)
1250
1560
Responsivity, APD gain = 1, 1550 nm (A/W)
0.9
Return loss (dB)
27
Electrical Characteristics
Sensitivity, 1 鈥?10
-10
, 1550 nm, 622 Mb/s (dBm)
1
-40.5
-40
Maximum overload (dBm)
2
-15
-11
Transimpedance (K Ohms)
3.2
Bandwidth 3 < M < 20 (MHz)
500
+5 V supply current (mA)
54
65
-5 V supply current (mA)
25
35
Output impedance (Ohm)
45
55
65
Operating Conditions and Requirements
Storage temperature range (
o
C)
-40
85
Operating temperature range (
o
C)
-20
70
Positive supply voltage (V)
4.75
5
5.25
Negative supply voltage (V)
-5.25
-5
-4.75
Power consumption (mW)
400
500
1 Sensitivity is tested at an optimum APD voltage, typically M=12.
2 Maximum overload is tested at the minimum APD voltage to achieve 500 MHz bandwidth, typically M<3.
Pin Connections
1
2
3
4
5
6
7
APD Bias Voltage (+)
Ground
Ground
-5V
Case Ground
Ground
Ground
8
9
10
11
12
13
14
Ground
+5 V
Ground
Ground
Output
Ground
NC
Ordering Information
Base Model
QDAX-500
No Connector
-002
Suffix
FC/PC
-050
ST
-052
SC
-053
Product Information/Receivers and Detectors
2000
43
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