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Differential switch routes high-frequency signals

By Martin Rowe | May 26, 2021

The MM5600 DPDT switch from Menlo Micro routes signals to 20 GHz, 40 Gb/sec.

5G is one of the technologies driving the need for higher-speed digital and RF signals. Those signals, which often run over differential pairs through a PCB, typically need switching. MEMS switches offer fast switching speeds with low power and low signal loss. Menlo Micro’s MEMS-based MM5600 can handle RF signals to 20 GHz and high-speed digital signals to 40 Gb/sec (with PAM4 modulation).

Menlo Micro MM5600 DPDT RF switchHoused in an 8 mm × 8 mm land grid array (LGA) package, the MM5600 DPDT switch (datasheet) features RON of 1.2 Ω. Insertion loss is 2.5 dB with 6 dB return loss, both at 12 GHz.

Applications include test and measurement load boards and serial high-speed memory designs.

Maximum switching time is 15 µsec (on) and 5 µsec (off). “A typical load board in and automated test system contains 64 or 128 DPDT switches,” said Chris Giovanniello, Menlo Micro co-founder and SVP marketing to 5G Technology World. “Switching times has a direct effect on total test time, making short switching time’s important.”

The MM5600 includes driver circuits controlled through an 8-bit serial interface. A shift register converts the serial stream to parallel. The integrated driver requires and 89 VDC bias voltage, VBB.

5G is one of the technologies driving the need for higher-speed digital and RF signals. Those signals, which often run over differential pairs through a PCB, typically need switching. MEMS switches offer fast switching speeds with low power and low signal loss. Menlo Micro’s MEMS-based MM5600 can handle RF signals to 20 GHz and high-speed digital signals to 40 Gb/sec (with PAM4 modulation).

Housed in an 8 mm × 8 mm land grid array (LGA) package, the MM5600 DPDT switch (datasheet) features RON of 1.2 Ω. Insertion loss is 2.5 dB with 6 dB return loss, both at 12 GHz.

Applications include test and measurement load boards and serial high-speed memory designs.

Maximum switching time is 15 µsec (on) and 5 µsec (off). “A typical load board in and automated test system contains 64 or 128 DPDT switches,” said Chris Giovanniello, Menlo Micro co-founder and SVP marketing to 5G Technology World. “Switching times has a direct effect on total test time, making short switching time’s important.”

The MM5600 includes driver circuits controlled through an 8-bit serial interface. A shift register converts the serial stream to parallel. The integrated driver requires and 89 VDC bias voltage, VBB.

Comments

  1. Martin Rowe says

    May 27, 2021 at 5:09 pm

    Menlo Micro uses the “MM” designation in this and other products. Years ago, National Semiconductor also used that designation. One such IC was the MM5316 digital clock.

    I still use one in my homemade clock.

    Reply

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