How does ADG3245 working?

 ADG3245 can change 2.5V  to  1.8V it is allow bidirectional signals,

so my question is ,

1, if signal comes from  1.8V  side ,  to ADG3245  the output is connected to 2.5V side.

can this working good?

2, When VCC=2.5V   SEL=2.5V  BE=0   in this mode it makes 2.5 to 1.8 V 

and Port A must connect to VCC side  and Port B must connect to 1.8V  side ,is this right ?

Parents
  • +1
    •  Analog Employees 
    on Feb 21, 2019 5:46 AM

    Hi Snowy,

    Here are the comments:

    1. The ADG3245 can only do down translation (2.5V down to 1.8V). This is discussed in the Mixed Voltage Operation, Level Translation section of the  ADG3245 datasheet on page 9. If signal comes from 1.8V side, the output will be limited to approximately 1.8V as well. Please see figure 8 page 9. 

    2. Yes, you are correct. 

    Let me know if this helps.

    Best Regards,

    May

Reply
  • +1
    •  Analog Employees 
    on Feb 21, 2019 5:46 AM

    Hi Snowy,

    Here are the comments:

    1. The ADG3245 can only do down translation (2.5V down to 1.8V). This is discussed in the Mixed Voltage Operation, Level Translation section of the  ADG3245 datasheet on page 9. If signal comes from 1.8V side, the output will be limited to approximately 1.8V as well. Please see figure 8 page 9. 

    2. Yes, you are correct. 

    Let me know if this helps.

    Best Regards,

    May

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