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SHF provides a wide range of high performance digital high speed modules suitable for the use in telecommunication systems and test and measurement setups e.g. for SONET OC-768 / SDHSTM-256, 100 GbE, 400 GbE or Fibre Channel.

Raising the speed (up to 120 Gbps serial)

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

Raising the number of levels (digital-to-analog converters 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 SHF 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 (PAM4 Multiplexer up to 112 GBaud)

Our PAM4 multiplexer take four binay 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.

Reshaping

The limiting amplifier and the D-type flip-flop (DFF) are ideally suited to clean, re-shape and re-time signals to perfect binary waveforms.

Tailor it to the needs

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.

Multiplexer (Mux) & Demultiplexer (Demux)

P/N	Type	Input Data Rate Range	Output Data Rate Range	Max. Output Amplitude (typ.)	Datasheet
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 603 A	2:1 Mux	2… 60 Gbps	4… 120 Gbps	0.4 V single-ended 0.8 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	0.38 V single-ended 0.76 V differential
SHF 623 B	1:2 Demux	10… 120 Gbps	5… 60 Gbps	0.4 V single-ended 0.8 V differentia

Digital-to-Analog Converter (DAC)

P/N	Type	Input	Output	Output Amplitude (typ., FS*)	Datasheet
SHF 611 F	3-Bit DAC	1… 32 Gbps at 2 or 3 inputs	1… 32 GBaud 4 or 8 levels	0.65 V single-ended 1.3 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	0.65 V single-ended 1.3 V differential
SHF 613 A	3-Bit DAC	1… 60 Gbps at 2 or 3 inputs	1… 60 GBaud 4 or 8 levels	0.65 V single-ended 1.3 V differential
SHF 614 B	6-Bit DAC	1… 60 Gbps at 2 to 6 inputs	1… 60 GBaud 4 to 64 levels	1.4 V single-ended 2.8 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

* 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.

PAM4 Multiplexer

P/N	Type	Input	Output	Datasheet
SHF 616 A	PAM4 Multiplexer	1… 56 Gbps binary (at 4 inputs)	2… 112 GBaud PAM4 (4… 224 Gbps PAM4)

Re-timing / Re-shaping (DFF & Limiting Amplifier)

P/N	Type	Data Rate Range	Datasheet
SHF 631 A	D-type Flip-Flop	2… 56 Gbps
SHF 651 A	Buffer Amplifier	1… 56 Gbps

Frequency Divider & Multiplier

P/N	Type	Input Operating Range	Output Operating Range	Datasheet
SHF 442 A	f -> f/2 Static Frequency Divider	0.5… 25 GHz	0.25… 12.5 GHz
SHF 641 A	f -> f/2 Static Frequency Divider	2… 56 GHz	1… 28 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 2040 A	Frequency Doubler	19.5… 21.75 GHz	39… 43.5 GHz
SHF 2856 A	Frequency Doubler	25… 32 GHz	50… 64 GHz