Masatoshi Tomoto 08-Jan-2015 09:15
How much time does it take from Power Down state to Normal Operation when control(PWRDWN Pin and the PWRDWN bit) changed from On to Off?
When using the Powerdown bit, the ADV7182 will enter powerdown mode almost instantaneously (i.e. under 20 ns).
The same is true for the Powerdown pin. However it should be noted that external capacitance (e.g. an external capacitor to ground) will obviously effect how quickly the voltage on the Powerdown pin can be pulled high or low. It is the capacitance on the line that is the limiting factor for the operation of the powerdown pin.
Analog Devices Inc.
After device internal state switched to normal operation(Power down on --> Off),
How much time will it be required to output decoded data from TTL port?
*Assuming Input CVBS signal to the ADV7182 was stable already at the timing(Power down on --> Off).
The ADV7182 would need to relock to the incoming analog video input. I would expect analog video lock and TTL output to take under 500 ms.
Retrieving data ...