Telecoms, Datacoms, Wireless, IoT


55 GHz digital step attenuator

23 October 2019 Telecoms, Datacoms, Wireless, IoT

pSemi announced volume production of the PE43508 digital step attenuator (DSA). This mmWave (millimetre wave) product is the world’s first single-chip silicon-on-insulator (SOI) DSA to support the entire 9 kHz to 55 GHz frequency range.

Ideal for 5G test and measurement applications, the PE43508 maintains a monotonic response across the entire frequency range and features low insertion loss across a wide frequency and temperature range, low attenuation error and good return loss.

The device is a 6-bit, 50 Ω DSA that offers wideband support from 9 kHz to 55 GHz. It covers a 31,5 dB attenuation range in 0,5 dB and 1 dB steps, and it is capable of maintain-ing 0,5 dB and 1 dB monotonicity through 55 GHz. The PE43508 also delivers glitch-safe attenuation state transitions, meaning no increased power spike during a state transition.

The DSA has an extended temperature range from -40°C to +105°C, an HBM ESD rating of 1 kV and an easy-to-use digital control interface supporting both serial addressable and parallel programming. It supports 1,8 V control signals and has an optional VSS_EXT bypass mode.


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