CM2030 Datasheet, PDF (13/14 Pages) California Micro Devices Corp – HDMI Transmitter Port Protection and Interface Device

CM2030
Application Information
Design Considerations
1. 5V out (pin 38)
Maximum overcurrent protection output drop at 55mA
on 5V_OUT is 100mV. To meet HDMI output require­
ments of 4.8-5.3V, an input of greater than 4.9V should
be used (i.e. 5.1V ±4%)
2. DUT On vs. DUT Off
Many HDMI CTS tests require a power off condition on
the System Under Test. Many discrete ESD diode con­
figurations can be forward biased when their VDD rail
is lower than the I/O pin bias, thereby exhibiting
extremely high apparent capacitance measurements,
for example. The MediaGuard^ΤΜ backdrive isolation
circuitry limits this current to less than 5μA, and will
help ensure HDMI compliance.
Please review all of the current HDMI design guidelines available at:
http://www.calmicro.com/applications/customer/downloads/current-cmd-mediaguard-design-guidelines.zip
© 2007 California Micro Devices Corp. All rights reserved.
490 N. McCarthy Blvd., Milpitas, CA 95035-5112 ●Tel: [phone] ●Fax: [phone] ●www.cmd.com
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Issue A – 11/16/07