BALF-2690-02D3 STMicroelectronics

BALF-2690-02D3 50 ohm nominal input / conjugate match balun for STLC2690, with integrated harmonic filter Datasheet production data Description STMicroelectronics BALF-2690-02D3 is a balun design to transform single ended signal to differential signals in Bluetooth applications. This BALF-2690-02D3 has been customized for STLC2690 Bluetooth transceiver with less than 1.2 dB insertion losses in the bandwidth (2400 MHz-2500 MHz). Flip-Chip package 4 bumps The BALF-2690-02D3 has been designed using STMicroelectronics IPD (integrated passive device) technology on non-conductive glass Features substrate which optimize RF performance. 50 nominal input / matched output differential impedance Figure 1. Device configuration (top view) Integrated harmonic filter 12 Low insertion loss A Low amplitude imbalance SE Low phase imbalance Small footprint < 1.54 mm B GND Benefits Very low profile (< 560 m after reflow) High RF performance C DIFF DIFF RF BOM and area reduction Applications Figure 2. Application schematic Bluetooth STLC2690 application Antenna STLC2690 Mobile phone application BALF-2690-02D3 RF P Z IN RF N GND September 2015 DocID025234 Rev 4 1/9 This is information on a product in full production. www.st.com 9Characteristics BALF-2690-02D3 1 Characteristics Table 1. Absolute maximum ratings (limiting values) Value Symbol Parameter Unit Min. Typ. Max. P Input power RFIN 10 13 dBm IN ESD rating, human body model (JESD22-A114-C) all I/O one at a time 2000 while others connected to GND V V ESD ESD rating, machine model, all I/O 200 T Operating temperature range -40 +85 C OP Table 2. Impedances (T = 25 C) amb Value Symbol Parameter Unit Min. Typ. Max. Z Nominal differential impedance matched to STLC2690 DIFF Z Nominal single-ended impedance 50 SE Table 3. RF performance (T = 25 C) amb Value Symbol Parameter Test condition Unit Min. Typ. Max. f Frequency range (bandwidth) 2400 2500 MHz I Insertion loss in bandwidth +1.2 dB L R Return loss in bandwidth 15 21 dB L SE Output phase imbalance (single ended) -10 +10 imb A Output amplitude imbalance -1 0.5 1 dB imb CMRR Common mode rejection (S)20 dB SC12 Att 2nd harmonic S21 attenuation 4800-5000 MHz 31 2fo dB Att 3rd harmonic S21 attenuation 7200-7500 MHz 36 3f0 2/9 DocID025234 Rev 4