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TPD2EUSB30DRTR Datasheet(PDF) 4 Page - Texas Instruments |
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TPD2EUSB30DRTR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 13 page TX+ TX- GND RX+ RX- VBUS D- D+ GND TX+ TX- GND RX+ RX- VBUS D- D+ GND 8-mm 1-mm GND D+ D- 1-mm 1-mm GND D+ D- TPD2EUSB30 USB 3.0 Host/ Controller/ PHY Pattern Generator USB3.0 Receiver PHY 36” Lossy Transmission Line Eye Pattern Measurement Point TPD2EUSB30 SLVSA12 – NOVEMBER 2009 www.ti.com APPLICATION INFORMATION Layout Guide with TPD2EUSB30DRTR Refer to Figure 7, the TPD2EUSB30DRTR is offered in space saving DRT package. The DRT package is a 1mm* 1mm package with flow-through pin-mapping for the high-speed differential lines. It is recommended to place the DRT package right next to the USB 3.0 connector. The GND pin should connected to GND plane of the board through a large VIA. If a dedicated GND plane is not present right underneath, it is recommended to route to the GND plane through a wide trace. The current associated with IEC ESD stress can be in the range of 30Amps or higher momentarily. A good, low impedance GND path ensures the system robustness against IEC ESD stress. The TPD2EUSB30 can provide system level ESD protection to the high-speed differential ports (>6 Gbps data rate). The flow-through package offers flexibility for board routing with traces up to 15 mills wide. It allows the differential signal pairs couple together right after they touch the ESD ports (pin 1 and pin 2) of the TPD2EUSB30. Figure 7. Layout Guide with the TPD2EUSB30 at the USB3.0 Class A connector TPD2EUSB30 Eye Pattern Test Setup See Figure 9 for a demonstration of the TPD2EUSB30 performance the lab set-up. Figure 8 shows a lab board that was designed to demonstrate the degradation of the eye pattern quality with and without the TPD2EUSB30 in the USB 3.0 signal path. Figure 10 shows that there is only ~2 ps jitter penalty to the differential signal when the TPD2EUSB30 device was added in the signal path Figure 8. Measurement Setup to collect the Eye Pattern on a Reference Board with TPD2EUSB30 4 Submit Documentation Feedback Copyright © 2009, Texas Instruments Incorporated Product Folder Link(s): TPD2EUSB30 |
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