RF Micro Devices has developed an ISM-band radio device for smart meters.
The RFFM6403 operates in the 405MHz–475MHz frequency range, and so will support wireless links in general 433/470MHz ISM band systems.
The chip is designed for AMI systems operating with a minimum output power of 30dBm.
The transmitter incorporates a +30.5dBm PA and Tx harmonic output filtering, a transmit bypass thru path with Tx harmonic output filtering, and a receive path with a low noise amplifier (LNA) with bypass mode.
There is also a low insertion loss/high isolation SP3T switch and separate Rx/Tx 50Ω ports, simplifying matching and providing input and output signals for both the Tx and Rx paths.
In the receive path, the Rx chain provides 16 dB of typical gain with only 5 mA of current and a noise figure of 1.7 dB.
The devices measures 6mm x 6mm x 1mm.
