I'm checking the specifications of the ADV7280A-M in conjunction with the MIPI specifications.
I have some questions about the electrical characteristics of the ADV7280A-M.
What is the minimum value of the resistance of ZOLP(Output impedance of LP transmitter) in the parameter of D-PHY specification?
What is the maximum value of resistance of ΔVCMTX(HF and LF)(Common-level variations above 450Mhz / Common-level variation between 50 - 450 MHz) with the parameters of D-PHY specification?
First, I ask the above two questions.
There are a log of missin items compared to the specification of MIPI.
Are there any documents that show electrical characteristics compared to the MIPI specifications?
If you have the material, I will check it first.
Expert written an apps note to help customer interface the ADV7282-M with MIPI receivers.Have you reviewed the below document? www.analog.com/.../AN-1337.pdf
Note: In low power mode ( vertical and horizontal blanking periods) logic low is 0V and logic high is 1.2V .In high speed mode ( active video)logic low is 200 mV and logic high is 400mV.In low power mode the termination needed is 50Ohm single ended. In high speed mode terminatio needed is 100 Ohm differential.
Thank you for your reply.
I looked at the document(AN-1337), but please teach me something that I do not understand.
I understood from the contents of the answer as follows.
My understanding is correct?
>the minimum value of the resistance of ZOLP(Output impedance of LP transmitter) = 50 Ohm
>the maximum value of resistance of ΔVCMTX(HF)(Common-level variations above 450Mhz) = 15 mVRMS
>the maximum value of resistance of ΔVCMTX(LF)(Common-level variation between 50 - 450MHz) = 25 mVRMS
Could you please teach me about the following in addition.
1) From the MIPI D-PHY Spec, ZOLP min is 110ohms, ADV7280A-M conforms and is characterized as ~165ohm
2) From the MIPI D-DPHY Spec, ΔVCMTX(HF) max 15mVRMS, ΔVCMTX(LF) max 25Vpeak, ADV7280A-M conforms and is characterized as ~8mVRMS ΔVCMTX(HF) and ~12mVpeak ΔVCMTX(LF).
There are ADI internal documents showing electrical characteristics compared to the MIPI spec but they are not available to view external.
ADV7280A-M conforms to all these specifications outlined in MIPI spec with typical values of:
|VOD| ~ 200mV
|ΔVOD| ~ 2mV
VOHHS ~ 300mV
ZOS ~ 50ohm
ΔZOS ~ 1%