2000
I
Long-haul STM4/OC12 applications
I
High sensitivity, -40 dBm at 622 Mb/s
I
Low optical reflection
I
1300 and 1550 nm operation
I
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.
Optical Characteristics
Operating wavelength (nm)
Responsivity, APD gain = 1, 1550 nm (A/W)
Return loss (dB)
Electrical Characteristics
Sensitivity, 1
10
-10
, 1550 nm, 622 Mb/s (dBm)
1
Maximum overload (dBm)
2
Transimpedance (K Ohms)
Bandwidth 3 < M < 20 (MHz)
+5 V supply current (mA)
-5 V supply current (mA)
Output impedance (Ohm)
Operating Conditions and Requirements
Storage temperature range (
o
C)
Operating temperature range (
o
C)
Positive supply voltage (V)
Negative supply voltage (V)
Power consumption (mW)
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.
Specifications
Contact Corning Lasertron regarding special requirements.
(Characteristics at 25
o
C, except as noted)
Ordering Information
SC
-053
Min
Typ
Max
1250
27
-15
500
45
-40
-20
4.75
-5.25
0.9
-40.5
-11
3.2
54
25
55
5
-5
400
1560
-40
65
35
65
85
70
5.25
-4.75
500
Pin Connections
1
APD Bias Voltage (+)
2
Ground
3
Ground
4
-5V
5
Case Ground
6
Ground
7
Ground
8
9
10 Ground
11 Ground
12 Output
13 Ground
14 NC
Ground
+5 V
Base Model
QDAX-500
ST
-052
FC/PC
-050
No Connector
-002
Suffix
QDAX-500
InGaAs APDFET Receiver
43
Product Information/Receivers and Detectors