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ADV7619 bảng dữ liệu(PDF) 13 Page - Analog Devices

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ADV7619 bảng dữ liệu(HTML) 13 Page - Analog Devices

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Data Sheet
ADV7619
Rev. B | Page 13 of 24
POWER SUPPLY RECOMMENDATIONS
POWER-UP SEQUENCE
The recommended power-up sequence for the ADV7619 is to
power up the 3.3 V supplies first, followed by the 1.8 V supplies.
RESET should be held low while the supplies are powered up.
Alternatively, the ADV7619 can be powered up by asserting all
supplies simultaneously. In this case, care must be taken while
the supplies are being established to ensure that a lower rated
supply does not go above a higher rated supply level.
3.3V SUPPLIES
3.3V SUPPLIES
POWER-UP
1.8V SUPPLIES
POWER-UP
3.3V
1.8V
1.8V SUPPLIES
Figure 7. Recommended Power-Up Sequence
POWER-DOWN SEQUENCE
The ADV7619 supplies can be deasserted simultaneously as long
as a higher rated supply does not go below a lower rated supply.
CURRENT RATING REQUIREMENTS FOR POWER
SUPPLY DESIGN
Table 6 shows the current rating requirements for power supply
design.
Table 6. Current Rating Requirements for Power Supply Design
Parameter
Current Rating (mA)
IDVDD
400
IDVDDIO
300
IPVDD
50
ITVDD
120
ICVDD
250



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