Multiplexers (MUX) & Demultiplexers (DEMUX)

P/N	Type	Input Data Rate Range	Output Data Rate Range	Max. Output Amplitude (typ.)
SHF 601 A	2:1 Mux	1… 30 Gbps	2… 60 Gbps	0.63 V single-ended 1.26 V differential
SHF 602 B	4:1 Mux	1.5… 15 Gbps	6… 60 Gbps	0.55 V single-ended 1.1 V differential
SHF C603 B	2:1 Mux	2… 64 Gbps	4… 128 Gbps	0.5 V single-ended 1 V differential
SHF 604 A	2:1 Power Mux	2… 40 Gbps	4… 80 Gbps	1.4 V single-ended 2.8 V differential
SHF 621 A	1:2 Demux	2… 60 Gbps	1… 30 Gbps	0.4 V single-ended
SHF C623 B	1:2 Demux	10… 120 Gbps	5… 60 Gbps	0.4 V single-ended

Digital-to-Analog Converters (DAC)

P/N	Type	Input	Output	Output Amplitude (typ., FS*)
SHF 611 F	3-Bit DAC	1… 32 Gbps at 2 or 3 inputs	1… 32 GBaud 4 or 8 levels	0.8 V single-ended 1.6 V differential
SHF 612 A	4-Bit DAC	1… 32 Gbps at 2, 3 or 4 inputs	1… 32 GBaud 4, 8 or 16 levels	0.6 V single-ended 1.2 V differential
SHF 613 A	3-Bit DAC	1… 60 Gbps at 2 or 3 inputs	1… 60 GBaud 4 or 8 levels	0.7 V single-ended 1.4 V differential
SHF 614 C	6-Bit DAC	1… 60 Gbps at 2 to 6 inputs	1… 60 GBaud 4 to 64 levels	1.5 V single-ended 3 V differential
SHF 615 B	3-Bit Power DAC	1… 60 Gbps at 2 or 3 inputs	1… 60 GBaud 4 or 8 levels	2.4 V single-ended 4.8 V differential
SHF C911 A	4-Bit DAC	5… 67 Gbps at 2, 3 or 4 inputs	5… 67 GBaud 4, 8 or 16 levels	0.6 V single-ended 1.2 V differential

* FS: Full Scale i.e. maximum output with all input channels active. Output voltage can be reduced by software or by applying less input channels.

PAM Generation and Sampling (PAM-MUX, PAM-Sampler)

P/N	Type	Input	Output	Datasheet
SHF 616 C	PAM4 Multiplexer	1.5… 64 Gbps binary (at 4 inputs)	3… 128 GBaud PAM4 (4… 256 Gbps PAM4)
SHF 11220 A	PAM4 Sampler	30… 58 GBaud PAM4 (60… 116 Gbps PAM4)	30… 58 Gbps binary

Signal Shaping (Filters, Equalizers and Attenuators)

P/N	Type	Bandwidth
SHF C681 B	6-Tap FIR Filter	up to 55 GHz*
SHF C711 A	Dual Analog RF Attenuator	50 GHz
SHF C712 A	Dual Digital RF Attenuator	40 GHz
SHF C980 A	Switchable Filter Bank	30 GHz*

*Bandwidth depends on the set filter characteristic.

Switches

P/N	Type	No. of Switching Ports
SHF C701 A	50 GHz 2:2 Cross Switch (DPDT)	2 ↔ 2
SHF C702 A	50 GHz Dual 2:1 Switch (SPDT)	2x (1 ↔ 2)
SHF C704 A	50 GHz 4:1 Switch (SP4T)	1 ↔ 4
SHF C980 A	30 GHz Switchable Filter Bank	1 ↔ 4

Frequency Dividers & Multipliers

P/N	Type	Input Operating Range	Output Operating Range
SHF C642 B	f -> f/2 Static Frequency Divider	2… 60 GHz	1… 30 GHz
SHF 1020 C	Frequency Doubler	9… 12.5 GHz	18… 25 GHz
SHF 1428 A	Frequency Doubler	12… 16.5 GHz	24… 33 GHz
SHF 1632 A	Frequency Doubler	13.5… 18 GHz	27… 36 GHz
SHF 2856 B	Frequency Doubler	25… 32 GHz	50… 64 GHz

Further Information

SHF provides a wide range of high speed modules suitable e.g. for SONET OC-768 / SDHSTM-256, 100 GbE, 400 GbE, 1TbE or Fibre Channel telecommunication systems . The needs of our customers are different; therefore SHF is happy to offer customization to specific applications. A small selection of such assemblies based on our standard product offerings can be found in the customized assemblies subsection.

Raising the speed (up to 120 Gbps serial)

Our multiplexers (MUX) and demultiplexers (DEMUX) offer broadband operation up to 120 Gbps with adjustable amplitude and eye symmetry.

Raising the number of levels (up to 60 GBaud)

Our digital-to-analog converters (DAC) operate at baud rates up to 32 or 60 GBaud. Up to six single-ended serial data streams are converted into one differential multi-level signal. This makes the DAC an ideal electrical signal source e.g. for PAM or QAM applications. Together with one of our our programmable BPGs (Bit Pattern Generators) a high speed “remote head” AWG (Arbitrary Waveform Generator) is formed.

Raising the speed and the number of levels (up to 128 GBaud)

Our PAM4 multiplexer take four binary input data streams, re-time, reshape the signals and multiplex each two to a binary signal of double the speed. Inside the module a two bit DAC converts these two extremely high speed signals to a four level signal.

Signal Shaping

Our filter offer the crucial benefit of improving the quality of a heavily degraded signal after transmission, e.g. for BER measurements. Equalizing operation has been verified for signals up to 60 GBaud PAM4 and 80 Gbps NRZ. Attenuation can be adjusted within a range of 6 to 28 dB with our adjustable attenuator.

Signal Switching

With our analog switches, routing between different high-speed clock, NRZ or PAM signal lines can be accommodated easily and fully automated.