DS90UB949-Q1: VTERM Pin connection

Rohith Krishnan

Part Number: DS90UB949-Q1
Other Parts Discussed in Thread: DS90UB948-Q1

Hi,

I'm using DS90UB949-Q1 to serialize HDMI signals and deserialize it to LVDS signals using DS90UB948-Q1 through STP cable(Dual Channel). What should be the VTERM Voltage?

over 6 years ago

0 Palaniappan Manickam over 6 years ago

TI__Genius 10475 points

Rohith,
The VTERM should be 3.3V for DC coupled and 1.8V for AC coupled.

0 Rohith Krishnan over 6 years ago in reply to Palaniappan Manickam

Intellectual 320 points

Hi,

What is DC coupled and AC coupled? Could please explain on this.

0 Palaniappan Manickam over 6 years ago in reply to Rohith Krishnan

TI__Genius 10475 points

Rohith,
DC coupled means no AC coupling capacitor and the common mode voltage on both sides of the link are the same or compatible. In AC coupled the two sides can be at different common mode but a capacitor is used to filter out the DC component.

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DS90UB949-Q1: VTERM Pin connection