I have a question about the ADM3053.
I will use it as shown in figure.
In this case, how many ohms can the driver drive the load?
Hi Mr K,
That transmitter can tolerate having the CANH and CANL signals shorted. Communication isn't possible, but the ADM3053 won't be damaged.
For communication, the ADM3053 is specified to drive 45 ohms over the full voltage and operating temp range while still maintaining the minimum 1.5V VOD.
Thank you for your reply.
When the total load is lower than RL=45 ohms, cannot the driver of ADM3053 communicate?
Hi Mr K.
The operation is guaranteed over the entire supply and temperature ranges with a 45 ohm load. If your design goes outside the datasheet limits you may find that the part operates as expected, but it will not be a supported design.
What application is this that you are required to drive less than 45 ohms?
I will use the CAN to communicate the plant control.
In a general application, when the number of nodes is 110, does not the load have the case that lowers more than 45 ohms?
I have the question about Visoout of ADM3053.
Could you teach me the maximum value of the Iout?
The RDIFF minimum on the ADM3053 is 20kohm. 110 ADM3053 nodes and 2 120ohm resistors in parallel is just at the 45 ohms limit.
Can I infer from your Visout question that you intend to drive additional components on the bus side? If that is the case, the ADM3054 and ADuM5000 may be a consideration. The ADuM5000 can provide 100mA at 5V. The ADM3053 is not supported to drive an additional load.
I use the Visoout and another load is not driven.
I want only to learn the maximum value of Iout about Visoout.
The transceiver could source as much as 75mA from the Visoout pin when driving a bus dominant state and RL is 60ohm.
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