Description

The CC1120 DCDC 868 MHz EM reference design contains schematics and layout files for the evaluation module used to evaluate the CC1120 and the TPS62730 together. The CC1120 is most power efficient at low voltage, and the TPS63720 converts battery voltage down to 2.1 volts for a 20-30% efficiency increase when using a 3.6 volt battery. The reference design demonstrates good techniques for CC1120 decoupling and RF layout. For optimum RF performance, these parts should be copied accurately. This is a 4-layer reference design with a discrete balun and an SMA antenna connector designed for a single ended 50 ohm antenna. The RF section has been designed for operation in the 863 to 870 MHz (EU) and 902 to 928MHz (US) frequency bands.