ADV7626 datasheet(21/24 Pages) AD

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Data Sheet

ADV7626

Rev. 0 | Page 21 of 24

POWER SUPPLY RECOMMENDATIONS

POWER-UP SEQUENCE

The power-up sequence for the ADV7626 is as follows:

1. Hold the RESET pin low.

2. Power up the 3.3 V supplies (DVDDIO and TVDD).

3. After the 3.3 V supplies reach their minimum recom-

mended value of 3.14 V, wait at least 20 ms before

powering up the 1.8 V supplies.

4. Power up the 1.8 V supplies (AVDD_TXA, AVDD_TXB,

CVDD, DVDD, PVDD, PVDD_TXA, and PVDD_TXB).

These supplies should be powered up at the same time;

that is, there should be a difference of less than 0.3 V

between them.

5. Release the RESET pin after all supplies are established.

After power-up, a complete reset is recommended. This reset

can be performed by the system microcontroller.

PSS ≥ 20ms

RESET > 5ms

RESET

1.8V

SUPPLY

3.3V

SUPPLY

3.3V

1.8V

3.14V

Figure 18. ADV7626 Supply Power-Up Sequence

POWER-DOWN SEQUENCE

The ADV7626 supplies can be deasserted simultaneously as

long as DVDDIO or TVDD does not fall below a lower rated

supply.

ADV7626 Datasheet(PDF) 21 Page - Analog Devices