RF step Attenuator SPI Module

Based on the Peregrine Semiconductor’s PE4306 chip, this module is a complete RF 0-31 dB attenuator with 1 dB steps, for 50 ohm systems on a 20x31mm PCB and has a universal SPI interface.

It draws under 100 uA at 3VDC and no negative voltage is required for it’s operation since the chip has an internal negative voltage generator.

A separately sold MCU controller PCB with a 0.96″ OLED Display and a Rotary encoder is also available, that is capable to control 2 RF Attenuator Modules and make a very usefull 0-62 dB step attenuator.