STMicroelectronics BALF-SPI2-02D3 miniaturized 433MHz balun

ST’s ultra-miniature BALF-SPI2-02D3 is a balun with Rx and Tx impedances optimized for S2-LP RF transceiver at 433 MHz. The BALF-SPI2-02D3 single-component solution simplifies RF complexity implementation and provides an optimized Rx sensitivity and output power with a PCB occupation under 3,2 mm², compared with 154mm² for the equivalent discrete solution. With low dispersion over temperature, the BALF-SPI2-02D3 surpasses discrete solutions.

Key features

• Monolithic RF solution for Matching, Balun and Harmonic Filter
• Optimum impedance matched to S2-LP
• Rx and Tx Balun integrated
• Low insertion loss

Additional features

• Low temperature variation compared with discretes
• Low amplitude imbalance
• Low phase imbalance
• Small footprint
• Very low profile < 620 μm after reflow

Applications

• Asset tracking
• Wireless alarm systems
• Smart metering
• Home energy management systems
• Smart home
• Building automation
• Industrial monitoring and control
• Smart lighting systems