DPDT analogue switch works above 5GHz and goes hi-z when powered off

Diodes has created a high-speed double-pole double-throw analogue switch that can be used as a multiplexer or de-multiplexer at over 5GHz.

To be known as PSMUX136, it supports a supply of 1.8 to 5.5V, and from 0 to 3.6V on the analogue ports. Control pins are compatible with 1.8V logic.

The device has two single-pole double throw switches, A and B, that share control signals and switch simultaneously.

Switch A is rated to 5.5GHz and typically exhibits 4.6Ω on-resistance (1.8Vdd 0.4Vanalogue, 8mA, or 12Ωmax (-40 to 125°C operating range).

Switch B is rated to 5.3GHz and typically exhibits 5.7Ω on-resistance (1.8Vdd and 2.7Vdd, 1.65Vanalogue, 8mA, or 13Ωmax (-40 to 125°C).

Both differential and single-ended signal switching applications are envisaged.

When powered off, the device typically only leaks ±10μA through its analogue connections (±50μA over temperature), reducing power drain on separately-powered parts of a circuit.

When powered, leakage through a de-selected port is better – typically ±2μA (±10μA over temperature).

“With its bandwidth and 0.1ns propagation delay, PSMUX136 is designed to pass high-frequency signals and ensure excellent signal integrity,” according to the company.

Power draw is typically 35μA (75μAmax over temp, which can be reduced to 1μA (typ, 10μA max over temp) when the disable pad is used – which also turns all analogue ports off.

Packaging is 1.5 x 2mm 10pad UQFN.

Applications in PCs, tablets, phones and networking devices are foreseen.