AN4138 STMICROELECTRONICS | Alldatasheet

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Technical content

January 2013 Doc ID 023404 Rev 1 1/9 AN4138 Application note HSP061-2 / HSP062-2 high speed line protection on HDMI 1.4 link Introduction This application note presents the HSP061-2 and HSP062-2 series and their capability to protect HDMI 1.3 and HDMI 1.4 TMDS lines. The HDMI interface is used for transmitting digital television audiovisual signals from DVD players, set-top- boxes and other sources to television sets and other video displays. The HSP series have been developed to be compliant with: ■ HDMI version 1.4 standard knowing the key point is the capability to transfer data with a maximum rate of 3.4 Gbps per channel without distortion. This leads the HSP061-2 and HSP062-2 to have a large bandwidth, to pass fast voltage slopes and to contain the 100  line impedance, HSP061-2 and HSP062-2 are used on the TMDS line. ■ IEC 61000-4-2 level 4 (8 kV contact discharge) HSP061-2 and HSP062-2 series are composed of several packages and topologies (see Chapter 1) to better fit customer requirements in terms of PCB design. HSP061-2 has the ground pin in the middle of the package and is proposed in: ■ SOT-666: HSP061-2P6 ■ µQFN-6L: HSP061-2M6 ■ µQFN-4L: HSP061-2N4 HSP062-2 has the ground pin on the side of the package and is proposed in: ■ SOT-666: HSP062-2P6 ■ µQFN-6L: HSP062-2M6 All these devices are flow-through.

1 HSP061-2 and HSP062-2 topology

protection depending on circuit portion to test. For further information refer to the product datasheet for HSP061-2. location the ground pin as shown in Figure 3 and Figure 4. For further information refer to the product datasheet for HSP062-2. Figure 1. HSP061-2 topology Figure 2. HSP061-2 footprint Figure 3. HSP062-2 topology Figure 4. HSP062-2 footprint

3 Layout considerations

3.1 Location for HSP device

the performance of the ESD device. overvoltages directly applied on the IC to be protected. possible to the ESD source with the layout given in the datasheet. end of the cable is required. Figure 9. Non-optimized location Figure 10. Significant overvoltages due

Figure 13. Layout for HDMI TMDS type C connector (4x HSP062-2M6)

4 Conclusion

5 Revision history

Table 2. Document revision history 11-Jan-2013 1 Initial release.