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DR-DG-28-MO
28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVER

The Photline DR-DG-28-MO is a driver module optimized for digitalapplications at 28 Gbps – 32 Gbps data rate. It exhibits an output voltage of 6
Vpp and a broad bandwidth of 28 GHz.
The Photline DR-DG-28-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 K type, allowing easy and repeatable connections.

FEATURES• Output voltage 6 Vpp• Flat gain up to 28 GHz

The Photline DR-DG-28-MO combines high performance and user
friendliness, it is the ideal device to drive 28 Gbps modulators and to obtainwidely opened optical eye diagrams with short jitter and high SNR.

• Single voltage power supply• Gain and crossing point adjustment

Performance Highlights

APPLICATIONSParameterMinTypMaxUnit• LiNbO3 & InP modulators

Cut-off Frequencies

50 k-28 GHz• 28 Gbps - 44 Gbps NRZ / RZ

Output Voltage-69Vpp• SONET OC-768 / SDH-256

Gain-30-dB• Research & Development

Saturated Power-6-dBm

Added Jitter

-900-

fs

Rise / Fall Times-1214psOPTIONS• Heat-sink

Measurements for Vbias = 10 V, Vamp = 0.45 V, Vxp = 0.3 V, Ibias = 380 mA• Analog version• 2.4 mm RF connectors

28 Gbps Output Response

RELATED EQUIPMENTS• MX-LN-20, MXAN-LN-20 modulators• MBC-DG Automatic Bias Controllers

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DR-DG-28-MO
28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVERDC Electrical Characteristics
Parameter

SymbolMin

TypMax

Unit

Supply voltage (fixed)

Vbias

91012.5

V

Current consumption

Ibias-300450mA

Gain control voltage

Vamp

00.4

1.2

V

Cross point control voltage

Vxp

00.3

0.9

V

Electrical Characteristics
Parameter

SymbolConditionMin

TypMax

Unit

Lower frequency

f3db, lower-3 dB point

45-50

kHz

Upper frequency

f3db, upper-3 dB point2528-GHzGain

S21

Small signal-30-dBGain ripple-< 28 GHz

-

±1.5-

dB

Input return loss

S1150 MHz < f < 20 GHz--10-9dB

Output return loss

S2250 MHz < f < 20 GHz--10-9dB

Saturated power

Psat

Vin = 0.5 Vpp-23-dBm

Output voltage

Vout

Vin = 0.5 Vpp

469VppRise time / Fall timetr / tf

20 % - 80 %-1214psAdded jitter

JRMS

JRMS = J2RMS-total - J2RMS-source-0.9-ps

Power dissipation

PVout = 6 Vpp-3-W

Conditions: Vin = 0.5 Vpp, Tamb = 25 °C, 50 : 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

SymbolMinMaxUnit

RF input voltage

Vin-1Vpp

Supply Voltage

Vbias

013V

DC current

Ibias

0450mA

Gain control voltage

Vamp01.5VCross point control voltage

Vxp

01VPower dissipation

Pdiss-5.8W

Temperature of operationTop-5+50°C

Storage temperature

Tst-40+70°C

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DR-DG-28-MO
28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVER
S21 Parameter Curve

Group Delay Parameter Curve
Conditions: Vbias = 10 V, Vamp = 0.4 V, Vxp = 0.2 V, Ibias = 365 mA

400,6300,5200,4Group delay (ns)S21 (dB)

Conditions: Vbias = 10 V, Vamp = 0.4 V, Vxp = 0.2 V, Ibias = 365 mA

100-10-200,30,20,10,0-0,1-30-0,2-40

0510152025030

510

S22 Parameter Curve202530

S11 Parameter Curve

Conditions: Vbias = 10 V, Vamp = 0.4 V, Vxp = 0.2 V, Ibias = 365 mA

Conditions: Vbias = 10 V, Vamp = 0.4 V, Vxp = 0.2 V, Ibias = 365 mA

00-5-5-10-10-15-15

S11 (dB)

S22 (dB)

15

Frequency (GHz)

Frequency (GHz)-20-25-20-25-30-30-35-35-40-40051015202503051015202530

1,21,4Frequency (GHz)

Frequency (GHz)

Typical Output Voltage Amplitude VS Gain
Control Vamp Tuning

S12 Parameter Curve

Conditions: Vbias = 10 V, Vamp = 0.4 V, Vxp = 0.2 V, Ibias = 365 mA

Conditions : Vbias = 10 V, Vxp = 0.2 V

9-20

8-30

7Vout (Vpp)

S12 (dB)-10-40-50-60-70

6543-80051015

202530Frequency (GHz)200,20,40,60,81

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DR-DG-28-MO28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVER
Eye Diagrams
20 Gbps data rate
Conditions: Ratio 1/2 , Pattern 231-1
Vbias = 10 V, Vamp = 0.45 V, Vxp = 0.3 V, Ibias = 380 mA

Input signal

Output response

Eye amplitude = 0.487 Vpp, Rise time = 9.78 ps
Jitter RMS = 293 fs, SNR = 20

Eye amplitude = 6.04 Vpp, Rise time = 11.76 ps
Jitter RMS = 949 fs, SNR = 12.8

28 Gbps data rate
Conditions: Ratio 1/2, Pattern 231-1
Vbias = 10 V, Vamp = 0.39 V, Vxp = 0.2 V, Ibias = 375 mAInput signalOutput response

Eye amplitude = 0.494 Vpp, Rise time = 10 ps
Jitter RMS = 263 fs, SNR = 25.9

Eye amplitude = 6.12 Vpp, Rise time = 12.13 ps
Jitter RMS = 851 fs, SNR = 12.9

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DR-DG-28-MO
28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVER
Electrical Schematic Diagram

Mechanical Diagram and Pinout
All measurements in mm  T   The heatsinking of the module is necessary. It’s user responsability to use an adequate heatsink. Refer to page 6 for iXBlue recommended
heatsink.

PINFunctionUnitIN

RF InK connector female

OUTRF OutK connector maleVbias

Power supply voltage

Set a typical operating specification

VampOutput voltage amplitude adjustment

Adjust for gain control tuning

Vxp

Output voltage cross point adjustment

Adjust for cross point control tuning

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DR-DG-28-MO
28 Gbps NRZ Medium Output Voltage Driver

PHOTLINE DRIVER
Mechanical Diagram And Pinout With HS-MO3 Heatsink
All measurements in mm



07_2015_PT_SP_ED0

  

About us
iXBlue Photonics includes iXBlue iXFiber brand that produces specialty optical fibers and Bragg gratings based fiber
optics components and iXBlue Photline brand that provides optical modulation solutions based on the company lithium
niobate (LiNbO3) modulators and RF electronic modules.
iXBlue Photonics serves a wide range of industries: sensing and instruments, defense, telecommunications, space andfiber lasers as well as research laboratories all over the world.
Ixblue reserves the right to change, at any time and without notice, the specifications, design, function orform of its products described herein. All statements, specification, technical information related to theproducts herein are given in good faith and based upon information believed to be reliable and accurate at
the moment of printing. However the accuracy and completeness thereof is not guaranteed. No liability isassumed for any inaccuracies and as a result of use of the products. The user must validate all parameters for each application before use and he assumes all risks in connection with the use of the products

3, rue Sophie Germain
25 000 Besançon - FRANCE
Tel. : +33 (0) 381 853 180 - Fax : + 33 (0) 381 811 557
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