SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone ++49 30 / 772 05 10 • Fax ++49 30 / 753 10 78
E-Mail: sales@shf.de • Web: http://www.shf.dePreliminary Datasheet
SHF 450 B
Buffer Amplifier

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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Description
The SHF 450B Buffer Amplifier is a limiting amplifier which operates at data rates up to 50 GBit/s and withclock signals up to 40 GHz for use in broadband test setups and telecom transmission systems. The ACcoupled differential inputs can be driven as well single ended by terminating the unused input.

Applications••

Broadband test setups
Telecom transmission systems prototypingFeatures
••
•
•••
•

Supports data rates up to 50 GBit/s
Supports clock frequencies up to 40 GHz
Fast large signal rise and fall times: < 8 ps
Low power consumption: 400 mW
Supports single-ended and differential drive
Output signal swing 1600 mVpp differential
Single –3.6 V power supply

Block diagram

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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Specifications
Parameter

UnitMin.

Data rate

GBit/s1

Eye amplitude

mVTyp.

Max.

Conditions

Input parameters
501000Single ended

Output parameters
1Eye amplitude

mV

800

1000

Single ended

RMS Jitter

fs700

900

Input RMS Jitter < 500 fs

Small signal gaindB

20

Negative supply voltage

V-3.5

Negative supply current

mA

23

Input amp. Vin_pp< 50 mVPower requirements-5110

130Connectors

1Input connector

1.85 mm female

Output connector

1.85 mm female

Please refer to the typical results on the following page.

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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Typical Results

output eye amplitude Vamp_out [mV].

Compression of data signals in single ended drive
900
800
700
600
500
400300
200
10000

100

200

300

400500input eye amplitude Vamp_in [mV]

Output voltage vs. frequency in single ended drive(sinusoidal input)

output amplitude Vout_pp [mV]

900800700
600500400300input amplitude Vin_pp: 200 mV
200

input amplitude Vin_pp: 100 mV100input amplitude Vin_pp: 30 mV005101520253035404550

frequency f [GHz]SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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S-Parameters

Aperture of Group Delay measurement: 105 MHz

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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Eye Diagrams
10 GBit/s

SN: 37Jitter: 563fs

28 GBit/s

Eye Amp: 785mV
Crossing: 48.6%

SN: 23Jitter: 488fs

50 GBit/s

40 GBit/s

SN: 11
Jitter: 550fs

Eye Amp: 782mV
Crossing: 49.3%

Eye Amp: 774mV
Crossing: 46.8%

SN: 10Jitter: 682fs

Eye Amp: 750mV
Crossing: 47.5%

Input eye amplitude: 300 mV, single ended

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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Mechanical drawing
Vee

7,2

15,2

GND

28

12,312,3IN

Y

38

SHF 450 B
Y

1929

IN

9,1

18

9,1

40

32

Ø2,7 (x4)34

PortConnector

InV (f)

InV (f)

YV (f)YV (f)All dimensions in mm

SHF reserves the right to change specifications and design without notice – SHF 450B - V001 – 14.09.2010

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