Pulse Medium Output Voltage Driver Module
The Photline DR-PL-20-MO RF drivers are amplifiers module designed to drive LiNbO3 optical modulators so as to generate undistorted optical pulses.
Electrical pulsed signals differ from classical telecom signals by long periods with no signal, when telecom signals are usually well balanced in 1 and 0. They also differ from analog signal by a wider frequency content. In order to generate clean optical pulses with sharp edges, sustained high and low levels and no overshoot, pulsed signals do require specific amplifiers.
The Photline DR-PL-20-MO driver is optimized for low and high Pulse Repetition Frequency (PRF) signals from 10 Hz to 1 GHz. The bandwidth up to 20 GHz accommodates 50 ps narrow pulse width with short rise and fall time (down to 30 ps) and can withstand longer pulses up to 10 ns.
he Photline DR-PL-20-MO drivers come in compact connectorized modules that match directly with Photline modulators, they use a single voltage power supply for ease and safety of use and feature an output voltage control for maximum flexibility. An optional heat sink is proposed as an accessory.
FEATURES
• Specific design for pulse signals
• Accommodate a variety of pulse formats
• High pulse fidelity
APPLICATIONS
• Pulse generation
• Pulse picking
• Spectroscopy
• Lidar
OPTIONS
• Heat-sink
Performance Highlights
Parameter
Min
Typ
Max
Unit
Cut-off frequencies
45 k
-
18 G
Hz
Output pulse amplitude
-
-
5.2
Vpp
Gain
28
30
-
dB
Pulse repetition frequency
10
-
1 G
Hz
Pulse width
60 p
-
10 n
s
Rise / Fall time
-
20
35
ps
DC Electrical Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
Supply voltage (fixed)
Vbias
-
12
-
V
Supply current
Ibias
-
320
400
mA
Output amplitudecontrol voltage
Vamp
0
-
1.2
V
Output pulse adjustment voltage
Vxp
0
0.8
1.1
V
Electrical Characteristics
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Lower frequency
f3dB, lower
-3 dB point
45
50
-
kHz
Upper frequency
f3dB, upper
-3 dB point
18
20
-
GHz
Gain
S21
Small signal, Pin = -30 dBm
28
30
-
dB
Gain ripple
-
< 17 GHz
-
±1.5
-
dB
Input return loss
S11
50 kHz < f < 12 GHz
-
-
-10
dB
Output return loss
S22
50 kHz < f < 20 GHz
-
-
-10
dB
Output pulse amplitude
Vout
Vin = 250 mVpp , by Vamp adjustment
1.5
4.5
5.2
Vpp
Sat output pulse amplitude
Vout
Vin = 500 mVpp
-
-
5.4
Vpp
Pulse repetition frequency
PRF
Duty-cycle < 0.1 %
10
-
1 G
Hz
Pulse width
PW
10 Hz < PRF < 1 GHz
60 p
-
10 n
s
Rise / Fall time
tR / tF
20 % - 80 %
-
20
35
ps
Power dissipation
P
-
-
3.8
5.2
W
Conditions: S parameters -30 dBm, Tamb = 25°C, 50 Ω 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
-
0.5
Vpp
Supply Voltage
Vbias
-
13
V
DC current
Ibias
-
0.400
A
Pulse ampplitude controle
Vamp
0
1.2
V
Pulse adjustment control
Vxp
0
1.1
V
Power dissipation
Pdiss
-
5.2
W
Temperature of operation
Top
-5
+40
°C
Storage temperature
Tst
-20
+70
°C
S21 and Group Delay Parameter Curves
Conditions: Vbias = 12 V, Vamp = 1.2 V, Vxp = 0.8 V, Ibias = 300 mA
Group Delay Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.2 V, Vxp = 0.8 V, Ibias = 300 mA
S22 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.2 V, Vxp = 0.8 V, Ibias = 300 mA
S11 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.2 V, Vxp = 0.8 V, Ibias = 300 mA
S12 Parameter Curve
Conditions: Vbias = 12 V, Vamp = 1.2 V, Vxp = 0.8 V, Ibias = 300 mA
Typical Output Voltage Amplitude vs Vamp
Conditions: Vbias = 12 V, Vxp = 0.8 V , VIN = 0.3 Vpp
Pulses Measurements
Conditions: Input signal
The input electrical signal is genrated by Anritsu MP1800A. Measured using Agilent 86100B with two 50 GHz 8348A channels module.
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
K connector female
OUT
RF Out
K connector male
Vbias
Power supply voltage
Set a typical operating specification
Vamp
Output voltage amplitude adjustment
Adjust for gain control tuning
Vxp
Output pulse adjustment
Adjust for pulse adjustment (amplitude and width) tuning
Det
RF power detector
Not available
Mechanical Diagram And Pinout With HS-MO2 Heatsink
All measurements in mm