ECMFTM series portfolio overview Common-mode filters embedding ESD protection Is this presentation suited for you? Where do you stand with common-mode noise filtering? Beginner? Intermediate? Advanced? I am not familiar with this subject. I am in the discovery phase and would like an overview and a basic understanding of the technology. I have a basic understanding of this subject. I would like to go deeper in details and tackle more aspects of this subject. I am very familiar with this subject. I would like to deepen my knowledge and become an expert. Click here to continue to next slide Click here to open new presentation Click here to open new presentation Overview Basic In depth 2 Purpose of common-mode filtering • When subjected to common-mode noise, high-speed differential lines generate unwanted radiated noise. • Common-mode filters prevent differential lines from radiating and interfering with other RF signals nearby. Differential transmission Radiated noise is generated ! NO radiated noise CMF Emitter X Receiver D+ D- D1+ D1+ D1- D1- CMF symbol Conduction noise Ex : internal clock, … Coupled noise Ex : RF spike Common mode sources Noise + Skew Ex : +100 ps on D- 3 Troubleshooting antenna desense • The sensitivity of reception antennas is degraded by radiated noise from high-speed data lines when there is: • Proximity between the 2 elements • Radiated common-mode noise at the antennas reception frequency spectrum • By eliminating radiated common-mode noise, ECMF™ preserves the antenna sensitivity. Example with Wi-Fi antenna / USB 3.0 port: Without ECMF Antenna wifi With ECMF Antenna wifi D+ D+ D- D- X CMF High speed differential line E.g. : USB3.0 Degraded sensitivity Loss of connection High speed differential line E.g. : USB3.0 Sensitivity preserved 4 Think CMF… When you have to implement high-speed lines in your RF system, you need to think CMF High-speed lines Antenna CMF D- • • • • • • MIPI SATA HDMI DisplayPort USB 2.0 USB 3.1 X D+ Avoid desense • • • • • • • Wi-Fi Bluetooth GPS WCDMA LTE Sub-GHz ZigBee 5 … With integrated ESD protection ESD protection CMF (Common-mode filter) Low dispersion semiconductor process Advanced technology for optimized performances Very small size High and deep rejection Low clamping voltage ECMFTM 6 Selection guide – ECMF™ DIFFERENTIAL BANDWIDTH Peak rejection frequency (> -20 dB) (GHz) Number of lanes complies with the following standards Part number Speed Class 1 • • • • • MIPI D-PHY (DSI & CSI) USB 2.0, MHL 2.0 HDMI 1.4 DisplayPort™ SATA 1 2 3 0.70.9 ECMF02-3F3 ECMF02-2BF3 ECMF02-4CMX8 ECMF02-2HSMX6 1.5 1.82.4 ZCC21 @ 100 MHz (Ω) 5 Speed class I Package type Package size XY (mm) II 24 Flip-Chip 0.83 x 1.33 14 Flip-Chip 0.83 x 1.23 16 µQFN-8L 1.20 x 2.50 µQFN-6L 1.50 x 1.70 ECMF02-2AMX6 µQFN-6L 1.50 x 1.70 ECMF02-3HSM6 30 (*) µQFN-6L 1.35 x 1.60 30 (*) µQFN-10L 1.35 x 2.60 Speed Class 2 • • • • • Speed Class 1 interfaces MIPI M-PHY (DSI & CSI) USB 3.0 USB 3.1 HDMI 2.0 ECMF04-4HSM10 ECMF04-4HSWM10 ECMF04-4AMX12 ECMF06-6HSM16 ECMF06-6AM16 16 50 30 16 30 15 µQFN-10L 1.35 x 2.60 µQFN-12L 1.50 x 3.30 (*) µQFN-16L 1.35 x 4.10 µQFN-16L 1.35 x 3.30 7 Let’s go further Basic presentation Intermediate product presentation soon available: ‘Understanding ST’s ECMF™ series specification’ Application Notes: In-depth information Common-mode filters (AN4511) Antenna desense on handheld equipment (AN4356) MHL filtering and protection (AN4540) Models - S parameters Selection Selection guide [pdf] www.st.com/ecmf-ipad 8 9 Thank you