BALF-SPI-02D3 STMicroelectronics

BALF-SPI-02D3 50 ohm nominal input / conjugate match balun to SPIRIT1 434 MHz, with integrated harmonic filter Datasheet - production data Figure 1: Pin coordinates (top view) Flip-Chip (6 bumps) package Features Figure 2: Application schematic (top view) C0 50 nominal input / conjugate match to SPIRIT1 1.8 -3.6 V C13 Low insertion loss 20 19 18 17 16 GPIO1 C12 Low amplitude imbalance GPIO0 1 15 SDN L7 L8 C11 Low phase imbalance 2 MISO SMPS Ext1 14 Small footprint MOSI SMPS Ext2 3 SPIRIT1 13 L0 4 SCLK TX 12 R0 RBIAS CSn CX Benefits 5 11 XOUT Antenna (50 ) 6 7 8 9 10 Very low profile < 670 m after reflow BALF-SPI-02D3 1 - .8 3.6 V High RF performance XTAL C9 RF BOM and area reduction C10 Applications 434 MHz impedance matched balun filter Table 1: Device summary Optimized for ST chip set SPIRIT1 SMD PN Value L0 LGQ15HSR15J02 150 nH Description L7 LQM21FN100M70L 10 H STMicroelectronics BALF-SPI-02D3 is an ultra miniature balun. The BALF-SPI-02D3 integrates L8 LQW15AN62NG00 62 nH matching network and harmonics filter. Matching C11 GRM188R60J105KA01D 1 F impedance has been customized for the SPIRIT1 C12 GRM155R71C104KA88D 100 nF ST transceiver. C13 GRM1555C1H331JA01D 330 pF The BALF-SPI-02D3 uses STMicroelectronics IPD technology on non-conductive glass CX GRM1555C1H221JA01 220 pF substrate which optimize RF performance. March 2017 DocID027278 Rev 4 1/12 www.st.com This is information on a product in full production. Digital interface XIN GPIO2 VBAT GPIO3 RF VREG P VBAT RF NCharacteristics BALF-SPI-02D3 1 Characteristics Table 2: Absolute ratings (limiting values) Value Symbol Parameter Unit Min. Typ. Max. PIN Input power RFIN - 20 dBm ESD ratings MIL STD883C 2000 - (HBM: C = 100 pF, R = 1.5 k, air discharge) V V ESD ESD ratings machine model 200 - (MM: C = 200 pF, R = 25 , L = 500 nH) T Operating temperature -40 - +85 C OP Table 3: Impedances (Tamb = 25 C) Value Symbol Parameter Unit Min. Typ. Max. ZRX Nominal differential RX balun impedance - matched SPIRIT1 - Z Nominal TX filter impedance TX ZANT Antenna impedance - 50 - Table 4: RF performances (Tamb = 25 C) Value Symbol Parameter Test condition Unit Min. Typ. Max. F Frequency range (bandwidth) 434 MHz Insertion loss in bandwidth S21RX-ANT without mismatch loss -2.3 -3.2 dB (RX balun) Insertion loss in bandwidth S21TX-ANT -2.4 -3.2 dB without mismatch loss (TX filter) Input return loss in bandwidth S11 -20 -10.5 dB ANT (RX balun) Input return loss in bandwidth S11ANT -32 -11 dB (TX filter) Output phase imbalance -30 10 30 imb (RX balun) Output amplitude imbalance Aimb -3.5 -1 2 dB (RX balun) Attenuation at 2fo -40 -44 Att Harmonic levels (TX filter) dBm Attenuation at 2fo -40 -45 2/12 DocID027278 Rev 4