SHF Communication Technologies AG
Wilhelm-von-Siemens-Str. 23D • 12277 Berlin • Germany
Phone +49 30 772051-0 • Fax +49 30 7531078
E-Mail: sales@shf-communication.com • Web: www.shf-communication.com

Datasheet
SHF C980 ASwitchable Filter BankSHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 1/11

Description
The SHF C980 A is a switchable broadband RF filter bank, operating up to 60 GHz for clock signals. Itoffers high quality output signals together with a compact size and ease of operation.
This selectable filter array module consists of three low pass Bessel filter paths and one through signal®
path. It can be used for various applications e.g. a trigger input of a Tektronix Digital Serial Analyzer®
DSA8300 or Keysight Digital Communication Analyzer DCA 86100.

Features






Broadband operation up to 60 GHz for clock signals
Low power consumption
Single-ended operation
Mini-USB interface only
Simple, easy to use graphical user interface
1
Automated measurements by using different software environments easily possibleApplications


Broadband test and measurement equipment
Trigger for a digital sampling oscilloscope

Block Diagram

Accessories
 Functional earth cable Mini-USB cable®

Tektronix is a registered trademark of Tektronix Inc., Keysight is a registered trademark of Keysight Technologies Inc.

1

To operate the module, intuitive and well documented plain text commands are sent and received via USB. Thus the device can beoperated either by the complementary software or automated by any programming language which can communicate with USB devices.
SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 2/11

Absolute Maximum Ratings
Parameter

Unit

SymbolInput Power

dBm

Pin

External DC Voltage
on RF Ports

VVDCext

Min.

Typ.

Max.

Comment

Input Parameters
0-6+6AC coupled ports

Max.

Comment

0.1
1
1
0.1

LPF-6.5
LPF-12.8
LPF-25.4
ThroughSpecifications – SHF C980 A
Parameter

Unit

SymbolMin.

Typ.

Performance

2Lower Cutoff Frequency

2Upper Cutoff Frequency

GHzGHzfL 3dBfU 3dB

6.5
13.5
25.4
30

Gain

dB

S21+7+7+6+5-6

Isolation

dB

S1230

Input Reflection

dBS11

Output ReflectiondBS22Settling Timems

Switching Transient
Overshoot3mV

LPF-6.5
LPF-12.8
LPF-25.4
Through+10+10+10+11+540-10-8-60.1 - 6.5 GHz (LPF-6.5 )1 - 12.8 GHz (LPF-12.8)
1 - 25.4 GHz (LPF-25.4)
0.1 - 40 GHz (Through)40 - 60 GHz (Through)All-8-6-3< 35 GHz35 - 50 GHz> 50 GHz
See RF Performance

1+600

Output port

2The Lower and Upper Cutoff Frequencies refer to 3dB point of each path3

Switching Transient Overshoot refers to a voltage overshoot measured on the module’s ports while toggling the switch

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 3/11

Parameter

UnitSymbolMin.

Typ.

Max.

Comment

Jitter RMS

fsJRMSSee note

Duty Cycle%DC

See note

Supply Voltage

VVcc

Supply Current

mA

Power Dissipation

W

Output Parameters
44

Power Requirement+4.40+5.00+5.25

Icc250300

Pd

1.25

1.575

Mini-USB

Mechanical Characteristics
Input

Ω50

1.85 mm (V) female

OutputΩ50

1.85 mm (V) female

DimensionsmmWeightgSee Outline Drawing
190

ConditionsOperating Temperature

4°C

Tambient

1535

No degradation in jitter or duty cycle performance were observed for sine or square wave signals

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 4/11

Typical RF Performance @ +25°CC980 AThe measurements below had been performed using a VNA.

Gain LPF-6.5

Gain LPF-12.8

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 5/11

Gain LPF-25.4

Gain ThroughSHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 6/11

ResponseIsolation

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 7/11

Input Reflection

Output Reflection

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 8/11

Typical Output Waveforms
Clock Output Signals
The measurements below had been performed using a signal generator (MG3697C), SHF78123 A (clockdistribution) and a Digital Serial Analyzer (DSA8300) with a Phase Reference Module (82A04B-60G) and aSampling Module (80X02). The output of the module had been connected directly to the DSA input.

6 GHz input signal

6 GHz output signal (LPF-6.5)

12 GHz input signal

12 GHz output signal (LPF-12.8)

SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020 Page 9/11

16 GHz input signal

16 GHz output signal (LPF-25.4)

50 GHz input signal

50 GHz output signal (through)60GHz input signal

60 GHz output signal (through)SHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020Page 10/11

Outline Drawing – Modulecbdef

7.7
11.4

a

Ø2.2
6.4

6.4
43.9
49
52.3

23.5
13.6

13.6

7
2.
Ø

12.4

4x

6.5GHz112.8GHz

InOut

2

25.4GHz50

SHF C980 A
Switchable Filter Bank

507471Throughg

XXXXX

SHFCommunication
Technologies AG

3USB

ncnc nc GND

3657
60PosPortConnector

1In1.85mm (V) female

2Out1.85mm (V) female

all dimensions in mmPortConnectoraFunctional earth (FE)bMini-USBcnc

dnc

enc

fncgxxSHF reserves the right to change specifications and design without notice – SHF C980 A - V003 – December 2, 2020Page 11/11