Peregrine Semiconductor (San Diego, CA) has announced a very high performance carrier-grade WiFi switch. With the highest isolation by a factor of 50, Peregrine’s switch also offers great linearity, which makes it ideally suited for the fast-growing market of 802.11ac Wi-Fi access points.

The rising amount of cellular-data offload to WiFi networks is significantly increasing the complexity of access-point radios. Most WiFi access points now contain multiple radios in order to address the capacity demands of cellular data. Based on Peregrine’s UltraCMOS technology, the PE42423 offers 41 dB of port-to-port isolation at 6 GHz. This isolation enables multi-radio access points to perform at peak levels without interference between the radios. Exceeding the stringent 802.11ac standard, Peregrine’s switch also offers 65 dBm of linearity to achieve higher data rates. In addition, UltraCMOS technology delivers equally high performance at either 3.3 or 5V, unlike gallium arsenide (GaAs) switches that experience severe performance degradation below 5V. Peregrine’s switch gives networking-product designers the flexibility to operate at lower power supplies and reduce energy consumption.


  • Low insertion loss (0.8 dB at 2.4 GHz, 0.95 dB  at 5.8 GHz).
  • Fast switching time (500 ns).
  • High ESD ratings (3.0 kV HBM on all RF pins).
  • Supports +1.8V standard logic control.
  • Provides stable RF performance over a power supply range between 2.3 and 5.5V.
  • Packaging is RoHS compliant, 16-lead QFN, and measures 3 x 3 mm.

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