DFF-DG-30

30 Gbps D-type Flip-Flop Module

DFF
The DFF-DG-30 is a D-type Flip Flop (DFF) module which is primarily intended for retiming of high data rate signals. The DFFDG-30 supports data transmission rates up to 30 Gbps and clock
frequencies as high as 30 GHz.
The DFF-DG-30 retimes and reshapes single ended input datastreams into differential output data streams.
It is also useful when associated with other logical circuits for application such as : NRZ/RZ conversion, DPSK and DQPSK differential encoding, phase detection in PLL loops or memories.

Features
Data transmission up to 30 Gbps
3.3 V to 8 V single voltage power
supplyLow jitter
Low rise / fall timeSingle ended and differential output

Applications

Performance Highlights
Parameter

Min

TypMax

Unit

Data rate2-

30GbpsData output voltage (slngle-ended)

-390-

mV

SNR-

15-

-

CPM-

200-

DegreeRise / Fall Times-

13 / 13-ps

Measurements for Vbias = 5 V, Ibias = 136 mA

Data retiming
28 Gbps DPSK

30 Gbps Output Response

2 28 Gbps (D)QPSK
Research & Development

Options
Alternative RF output connectors

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DFF-DG-30

30 Gbps D-type Flip-Flop Module

DFF

DC Electrical Characteristics
Parameter

SymbolSupply voltage

Vbias

Current consumption

Ibias

Condition

Vbias = 5 VMin

TypMax

Unit

3.3

58V-

0.135-A

Electrical Characteristics Conditions: Vbias = 5 V, Tamb = 25 °C, 50 W system
Parameter

SymbolConditionMin

TypMax

Unit

Data rate

Din

NRZ format @fClk

2-30Gbps

Clock frequency

fClk-2-30

GHz

Data input voltage

VDin-100300800mVpp

Clock input voltageVClk-

100300

800

dB

VDout

Single-ended

370

390

420

VDout+ - VDout-

Differential

740

780

840

Data input return loss

S11Dinf < 10 GHz---10dB

Clock input return loss

S11Clkf < 10 GHz

--

-10dB

Data output return loss

S22Dout

f < 10 GHz

-

-

-10dB

Signal noise ratio

SNR-

-

15-

-

Clock phase margin

CPM@28 Gbps-200-

DegreeRise time / Fall timetr / tf

20 % - 80 %, 28 Gbps

-13 / 13-ps

Power dissipation

Pdiss

Vbias = 5 V

0.675

--W

Data output voltagemVpp

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

SymbolMinMax

Unit

Data input voltage

Din

0800mVpp

Clock input voltage

VClk

0800mVpp

Supply voltage

Vbias08V

Power dissipation

Pdiss-0.7

WTemperature of operation

Top0+40°C

Storage temperatureTst-20+70°C

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DFF-DG-3030 Gbps D-type Flip-Flop Module

DFF

Example of Reshaped Eye Diagrams

12.5 Gbps data rate

Conditions: Ratio y, Pattern 231-1
Vbias = 5 V, Ibias = 136 mA

Input signal
Eye amplitude = 0.135 V, Rise time = 15 ps
Jitter RMS = 2.2 ps, SNR = 8.85

Output reshaped signal

Measured using Agilent 86100B with two 50 GHz
8348A channels module, and without precision time-base module

Eye amplitude = 0.395 V, Rise time = 12.9 ps
Jitter RMS = 1.1 ps, SNR = 20.2

25 Gbps data rate
Conditions: Ratio y, Pattern 231-1
Vbias = 5 V, Ibias = 136 mA

Input signal
Eye amplitude = 0.118 V, Rise time = 13.1 ps
Jitter RMS = 1.17 ps, SNR = 5.7

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Output reshaped signal

Measured using Agilent 86100B with two 50 GHz
8348A channels module, and without precision time-base module

Eye amplitude = 0.386 V, Rise time = 12.6 ps
Jitter RMS = 1.3 ps, SNR = 22.37

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DFF-DG-30

30 Gbps D-type Flip-Flop Module

DFF

Example of Reshaped Eye Diagrams

28 Gbps data rate

Conditions: Ratio y, Pattern 231-1
Vbias = 5 V, Ibias = 136 mA

Input signal
Eye amplitude = 0.382 V, Rise time = 11.36 ps
Jitter RMS = 1.27 ps, SNR = 7.69

Output reshaped signal

Measured using Agilent 86100B with two 50 GHz
8348A channels module, and without precision time-base module

Eye amplitude = 0.394 V, Rise time = 13.07 ps
Jitter RMS = 1.16 ps, SNR = 15.7

30 Gbps data rate
Conditions: Ratio y, Pattern 231-1
Vbias = 5 V, Ibias = 136 mA

Input signal
Eye amplitude = 0.386 mV, Rise time = 11.36 ps
Jitter RMS = 1.1 ps, SNR = 8.31

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Output reshaped signal

Measured using Agilent 86100B with two 50 GHz
8348A channels module, and without precision time-base module

Eye amplitude = 0.391 V, Rise time = 13.73 ps
Jitter RMS = 1.073 ps, SNR = 15.52

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DFF-DG-30

30 Gbps D-type Flip-Flop Module

DFFElectrical Schematic Diagram

DATA IN

DATA OUTDATA OUT
previous

Rising edge #00X

Rising edge #11X

No clock or
non-risingedge

X

PreviousstateX

Clock

X : “don’t care” condition (signal is irrelevant)Mechanical diagram and pinout
All measurements in mm

PIN

Function

Operational Notes

Data In

Data RF input

K-connector female

Clock In

Clock RF input

K-connector female

Vbias

Power supply voltage

Pin feed through diameter 0.8 mm

GndGround

Pin feed through diameter 1.4 mm

Data Out -RF output

K-connector female (male in option)

Data Out +RF output

K-connector female (male in option)www.photline.com

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DFF-DG-30

22 Gbps High Output Voltage Driver Module

DFF

Related equipments

RZ
NRZDPSKDQPSK datastream reshaping

RZ / NRZ / DPSK datastream reshaping

MXIQ-LN-40 is an ultra low loss IQ modulator for 2 x 22 Gbps DQPSK modulation.

DR-DG amplifiers series are intended todrive MX-LN series modulators for 10 /28 / 40 Gbps RZ / NRZ / DPSK modulation formats.

DR-DG-20-HO amplifiers are intended todrive MXIQ-LN-40 modulator with 2 x V psignal for 2 x 22 Gbps DQPSK modulation.

MBC-DG-BT is an automatic bias controller designed to lock the operating point ofthe MX-LN modulators.

MBC-IQ-BT is an automatic bias controller designed to individually lock the operating point of the MXIQ-LN-40 sub-MZs.

ABOUT USV1, PT-Q1-2010

MX-LN series modulators are intended
for 10 / 28 / 40 Gbps RZ / NRZ / DPSK
modulation formats.

Photline Technologies is a provider of Fiber Optics Modulation Solutions based on the company LiNb03 modulators and high-speed electronics modules. Photline Technologies offers high speed and high data rate modulation solutions for the telecommunication industry and the defense, aerospace, instruments and sensors markets. The products offered by the company include : comprehensive range of intensity and phasemodulators (800 nm, 1060 nm, 1300 nm, 1550 nm), RF drivers and modules, transmitters and modulation units.
Photline Technologies
phone : +33 (0) 381 853 180
fax : +33 (0) 381 811 557
16, rue Auguste Jouchoux
F-25 000 Besançon
www.photline.com

Photline Technologies reserves the right to change, at any time and without notice, the specifications, design, function or form of its products described herein. All statements, specification, technical information related to the products herein are given in good faith and based upon information believed to bereliable and accurate at the moment of printing. However the accuracy and completeness thereof is not guaranteed. No liability is assumed for any inaccuracies and as aresult 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.

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