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ADS54J60 Questions

Other Parts Discussed in Thread: ADS54J60

1)      Do you have a spice model for theADS54J60 Analog input pins,  INAP/M  and  INBP/M ?

2)      Can you tell me what is the maximum  loading on the ADS54J60 VCM output pin is?

3)      Do you have recommendations for a bypass cap on the ADS54J60 VCM output pin?

4)      Is there an updated ADS54J60 data sheet? I am working from rev0.13 Sep 2014

  • Richard,

    The latest product preview version of the data sheet can now be downloaded from the TI website. Do a search for "ADS54J60". The recommend capacitor value for VCM is 0.1uF. I am working with the designers to get you the other information you requested. The evm is available as well if your are interested in ordering one. 

    Regards,

    Jim

  • Richard,

    Here are answers to your other questions.

    Regards,

    Jim

    1)  Do you have a spice model for theADS54J60 Analog input pins,  INAP/M  and  INBP/M ?

    A1: Figure 15 of web-datasheet shows equivalent circuit which can be used for spice sim.

    2)      Can you tell me what is the maximum  loading on the ADS54J60 VCM output pin is?

    A2: Typically VCM pin supports ~1mA output current for 25mV drop in voltage, however, for a more accurate number we need to measure it. Are you planning to use DC coupling for analog inputs?

    Since ADS54J60 has self-biased inputs, it doesn’t have to be DC coupled to the driver unless application is zero IF at ADC’ inputs.

  • Jim,
    Thanks for the cap value and a heads up on the updated data sheet!
    Richard