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TPD1E10B06QDPYRQ1 Datasheet(PDF) 11 Page - Texas Instruments |
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TPD1E10B06QDPYRQ1 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 18 page 11 TPD1E10B06-Q1 www.ti.com SLVSDN7A – AUGUST 2016 – REVISED AUGUST 2016 Product Folder Links: TPD1E10B06-Q1 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated • IEC 61000-4-2 protection requirement is covered by the IEC performance of the TVS diode For this application, the audio signal voltage range is –3 V to 3 V. The VRWM for the TVS is –5.5 V to 5.5 V; therefore, the bidirectional TVS does not break down during normal operation, and therefore normal operation of the audio signal is not effected because of the signal voltage range. In this application, a bidirectional TVS like TPD1E10B06-Q1 is required. Next, consider the frequency content of this audio signal. In this application with the class AB amplifier, the frequency content is from 20 Hz to 20 kHz; ensure that the TVS I/O capacitance does not distort this signal by filtering it. With the TPD1E10B06-Q1 typical capacitance of 12 pF, which leads to a typical 3-dB bandwidth of 400 MHz, this diode has sufficient bandwidth to pass the audio signal without distorting it. Finally, the human interface in this application requires above standard Level 4 IEC 61000-4-2 system-level ESD protection (±20-kV Contact, ±25-kV Air-Gap). A standard TVS cannot survive this level of IEC ESD stress. However, the TPD1E10B06-Q1 can survive at least ±30-kV Contact/ ±30-kV Air-Gap. Therefore, the device can provide sufficient ESD protection for the interface, even though the requirements are stringent. For any TVS diode to provide the full range of ESD protection capabilities, as well as to minimize the noise and EMI disturbances the board will see during ESD events, a system designer must use proper board layout of their TVS ESD protection diodes. See the Layout section for instructions on properly laying out TPD1E10B06-Q1. 8.2.3 Application Curves Figure 11. IEC 61000-4-2 Clamp Voltage +8-kV Contact ESD Figure 12. IEC 61000-4-2 Clamp Voltage –8-kV Contact ESD |
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