Dear Analog Devices Team
We are designing a board which uses ADV7391BCPZ Video Encoder and ADA4433-1BCPZ-R2 SD Video filter amplifier.
Below are the few observation :
it is clear for the COMP and Rset connection on the ADV739X datasheet pin definition:
RSET Controls the amplitudes of the DAC 1, DAC 2, and DAC 3 outputs. For full-drive operation…
seems there is some mistake for the ADA4433 application circuit, i checked the ADA4432 amd ADA4433 products web, the ADA4433 application circuit should be from the CN0264 as below web…
RSET Controls the amplitudes of the DAC 1, DAC 2, and DAC 3 outputs. For full-drive operation (for example, into a 37.5 Ω load), a 510 Ω resistor must be connected from RSET to AGND. For low-drive operation (for example, into a 300 Ω load), a 4.12 kΩ resistor must be connected from RSET to AGND
COMP Compensation Pin. Connect a 2.2 nF capacitor from COMP to VAA;
The ADV739x contains three DACs. All three DACs can be configured to operate in full-drive mode. Full-drive mode is defined as 34.7 mA full-scale current into a 37.5 Ω load, RL. Full drive is the recommended mode of operation for the DACs.
Alternatively, all three DACs can be configured to operate in low-drive mode. Low-drive mode is defined as 4.33 mA full-scale current into a 300 Ω load, RL.
The ADV739x contains an RSET pin. A resistor connected between the RSET pin and AGND is used to control the full-scale output current and, therefore, the output voltage levels of DAC 1, DAC 2, and DAC 3. For full-drive operation, RSET must have a value of 510 Ω and RL must have a value of 37.5 Ω. For low-drive opera-tion, RSET must have a value of 4.12 kΩ, and RL must have a value of 300 Ω. The resistor connected to the RSET pin should have a 1% tolerance.
The ADV739x contains a compensation pin, COMP. A 2.2 nF compensation capacitor should be connected from the COMP pin to VAA.
Also you can see the reference schematics design on ADV739X datasheet Rev E page 72 and &3, Fig- 93 and 94;