40 Gbps NRZ Medium Output Voltage Driver
The Photline DR-DG-40-MO is a driver module optimized for digital applications at 40 Gbps – 44 Gbps data rate. It exhibits an output voltage of 6.3 Vpp and a broad bandwidth of 40 GHz.
The Photline DR-DG-40-MO is housed in a compact package that integrates voltage regulators allowing for flexible biasing, while internal bias sequencing circuitry assures robust operation and single voltage power supply for maximum ease of use. It features two control inputs: one for gain control, the second one for crossing point adjustment. The RF connectors are V type, allowing easy and repeatable connections.
The Photline DR-DG-40-MO combines high performance and user friendliness, it is the ideal device to drive 40 Gbps modulators and to obtain widely opened optical eye diagrams with short jitter and high SNR.
FEATURES
• Output voltage 6.3 Vpp
• Flat gain up to 40 GHz
• Single voltage power supply
• Gain and crossing point adjustmet
APPLICATIONS
• LiNbO3 & InP modulators
• 40 Gbps - 44 Gbps NRZ / RZ
• SONET OC-768 / SDH-256
• Research & Development
OPTIONS
• Heat-sink
• Analog version
• Low output voltage version for EAM
RELATED EQUIPMENTS
• MX-LN-40, MXAN-LN-40 modulators
• MBC-DG Automatic Bias Controllers
Performance Highlights
Parameter
Min
Typ
Max
Unit
Cut-off Frequencies
50 k
-
40 G
Hz
Output Voltage
-
6.3
-
Vpp
Gain
-
26
-
dB
Saturated Power
20
-
-
dBm
Added Jitter
-
0.75
-
ps
Rise / Fall Times
-
9
12
ps
Measurements for Vbias = 8 V, Vamp = 2.1 V, Vxp = 1.7 V, Ibias = 282 mA
40 Gbps Output Response
DC Electrical Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
Supply voltage (fixed)
Vbias
7
8
12
V
Current consumption
Ibias
-
300
350
mA
Gain control voltage
Vamp
0
1.5
2
V
Cross point control voltage
Vxp
0
0.8
2.5
V
Electrical Characteristics
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Lower frequency
f3db, lower
-3 dB point
-
-
50
kHz
Upper frequency
f3db, upper
-3 dB point
36
40
-
GHz
Gain
S21
Small signal
-
26
-
dB
Gain ripple
- < 40 GHz
-
±1.5
-
dB
Input return loss
S11
50 MHz < f < 30 GHz
-
-10
-
dB
Output return loss
S22
50 MHz < f < 30 GHz
-
-10
-
dB
Saturated power
Psat
Vin = 0.45 Vpp
20
-
-
dBm
Output voltage
Vout
Vin = 0.45 Vpp
-
6.3
6.5
Vpp
Rise time / Fall time
tr / tf
20 % - 80 %
-
9
12
ps
Added jitter
JRMS
JRMS=√J2RMS-total- J2RMS-source
-
0.75
-
ps
Power dissipation
p Vout = 6.3 Vpp
-
2.4
-
W
Conditions: Vin = 0.65 Vpp, Tamb = 25 °C, 50 W system
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.
Parameter
Symbol
Min
Max
Unit
RF input voltage
Vin
-
1
Vpp
Supply Voltage
Vbias
0
12
V
DC current
Ibias
0
350
mA
Gain control voltage
Vamp
0
2
V
Cross point control voltage
Vxp
0
2.5
V
Power dissipation
Pdiss
-
4.2
W
Temperature of operation
Top
0
40
°C
Storage temperature
Tst
-20
+70
°C
S21 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.5 V, Vxp = 0.8 V, Ibias = 300 mA
Group Delay Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.5 V, Vxp = 0.8 V, Ibias = 300 mA
S22 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.5 V, Vxp = 0.8 V, Ibias = 300 mA
S11 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.5 V, Vxp = 0.8 V, Ibias = 300 mA
S12 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.5 V, Vxp = 0.8 V, Ibias = 300 mA
Typical Output Voltage Amplitude VS Gain
Control Vamp Tuning
Conditions: Vbias = 12 V, Vxp = 1.7 V
Eye Diagrams
Electrical Schematic Diagram
Mechanical Diagram and Pinout
All measurements in mm
The heatsinking of the module is necessary. It’s user responsability to use an adequate heatsink. Refer to the iXBlue recommended heatsink.
PIN
Function
Unit
IN
RF In
V connector female
OUT
RF Out
V connector male
Vbias
Power supply voltage
Set a typical operating specification
Vamp
Output voltage amplitude adjustment
Adjust for gain control tuning
Vxp
Output voltage cross point adjustment
Adjust for cross point control tuning
Mechanical Diagram And Pinout With HS-MO2 Heatsink
All measurements in mm