SHF Communication Technologies AGWilhelm-von-Siemens-Str. 23 • Aufgang D • 12277 Berlin – Marienfelde • Germany
Phone ++49 30 / 772 05 10 • Fax ++49 30 / 753 10 78
E-Mail: sales@shf.biz • Web: http://www.shf.biz

Datasheet
SHF 11120 A
40/43 Gbps Clock Recovery
ModuleDescription
The SHF 11120 A is a clock recovery module which extracts a clock signal at a frequency half of
the incoming bit rate from an electrical NRZ or RZ data signal at a nominal bit rate of about
40 Gbps or about 43 Gbps. The module is a compact solution which offers superb performancewhile including easy to use features.
There are two separate VCOs included in the module, which allow operation in a standard modeat 39.81 Gbps or in an FEC mode to cover FEC bit rates of 42.65 Gbps or 43.01 Gbps,
respectively. Two reference frequencies are included as standard.

Featuressupports multiple data rates (standard bit rate mode at OC-768, non-FEC rates at 39.81 Gbps
and FEC bit rate mode at OC-768 FEC rates around 43 Gbps)
clock output frequency at half of the input data bit ratea reference signal at input bit rate divided by 64 is required
NRZ and RZ input data format applicable
only a 50 mV single ended input signal is required
excellent tolerance against input signal jitter
increases capability of the SHF 47100 A O/E Receiver by adding clock recovery
9V adaptor included as standard for power supply

Applications
R&D for optical communication systems at bit rates around 40 and 43 Gbps
characterization of high speed optical components
bit error rate testing
optical component and fiber loop testing
optical transmitter testingOptions
C40: full rate clock output can be providedFrequencies available asstandard:

Block Diagram

622.08 MHz
672.163 MHz

Internal reference signals

PLL

Other frequencies within
the two VCO ranges,e.g. 666.51 MHz, arealso available as acustom request.

PretuneandFilter
Phase
Detector

VCOx2

20 GHzGeneration50Ω

Ext. Reference
Input(625 / 672 MHz)40 / 43 GBit/s
NRZ or RZ
Data Input

20 GHzClockOutput

40 GHzClockOutput

SHF reserves the right to change specifications and design without notice - SHF 11120 A – Rev. 1.15 – 18/MAR/2004 Page 2/5

Specifications
Parameter
40/43 Gbps Data Input
Connector Type/CouplingUnit

Operating bit rate
VCO1
VCO2
Input Return Loss

Gbps

Input Voltage

mVMin.

Typ.

Max.

ruggedized V-maleconnector, AC-coupled

dB

39.5
42.5
10550

40.1
43.1

Input Frequency

MHzInput Return Loss
Input Voltage

dB
mV

617
664
10200

627
674

Output Frequency

GHz

Output Return Loss
Output Voltage

dBmVpp101200

fs

500

19.75
21.25

20.05
21.55

40/43 GHz Clock Output (Optional)
Connector Type/CouplingGHz

Output Return Loss
Output Voltage
RMS-JitterdBmVpp
fsGeneral
Dimensions
Power supply
Supply current

mmVA

Power consumption
Operating temperature
Storage temperature

WCC

ruggedized K-maleconnector, AC-coupled
standard mode
FEC mode

800

20/21.5 GHz Clock Output
Connector Type/Coupling

Output Frequency

standard mode
FEC mode<20 GHz<40 GHz1000

625/672 MHz Reference Clock Input
Connector Type/Coupling

RMS-Jitter

Conditions

39.5
42.5

40.1
43.1
10600
500

ruggedized K-maleconnector, AC-coupled
standard mode
FEC mode<30 GHz
half bit rate
600mV with option C40

ruggedized V-maleconnector, AC-coupled
standard mode
FEC modefull bit rate

120x220x40
9121.01.280-20standardwith option C404085All parameters measured at 25°C
SHF reserves the right to change specifications and design without notice - SHF 11120 A – Rev. 1.15 – 18/MAR/2004 Page 3/5

Output Waveform

Fig. 2: 19.9 GHz recovered clock signal
The measurement was performed using an Agilent DCA 86100 B / 70 GHz sampling head Agilent
86118 A / precision time base module Agilent 86107 A / 50 cm Suhner Sucoflex 102 EA / 10 dB Vattenuator.

SHF reserves the right to change specifications and design without notice - SHF 11120 A – Rev. 1.15 – 18/MAR/2004 Page 4/5

105754515

Module Outline

Ext RefLED

Remark:The Full Clock Output
Connector will be supplied
only with Option C4014PowerLED

Data In(1,85 Male)

RefClock In(2,92 Male)

Full ClockOut(1,85 Male)

Half ClockOut(2,92 Male)

29
11220

120

PowerSupplyOn

Off

Ext Int1 Int2FEC

NonFECAll dimensions in mm

SHF reserves the right to change specifications and design without notice - SHF 11120 A – Rev. 1.15 – 18/MAR/2004 Page 5/5