ADC 4002 simulation problem

hi,

when adding the ad4002 in ltspice i cant find which pins are the ones that appear in the datasheet.

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  • +1
    •  Analog Employees 
    on Apr 7, 2020 1:41 PM over 1 year ago

    ALB0077,

       The AD4002 LTspice model is a simplified for dynamic simulation purposes (charge kick-back, settling etc.) - there is no 'programmable functionality'.

    There is also some inconsistency between the pin name of the model vs. the datasheet which can be confussing.

    Here is a brief description:

    IN+: Signal input.

    EN_PreChrg: High Z mode. Set to VDD to activate. Set to GND to disable.

    CNV: Convert input signal to sample

    Reset: Return all internal charged nodes to zero.

    GND: GND.

    IN_SlewAlarm: Slew rate monitoring. GND if good. VDD if exceeded.

    Ref: Reference voltage.

    Vout: Quantized voltage output (for observation)

    Hope this helps!

    Regards,

    Jeff

Reply
  • +1
    •  Analog Employees 
    on Apr 7, 2020 1:41 PM over 1 year ago

    ALB0077,

       The AD4002 LTspice model is a simplified for dynamic simulation purposes (charge kick-back, settling etc.) - there is no 'programmable functionality'.

    There is also some inconsistency between the pin name of the model vs. the datasheet which can be confussing.

    Here is a brief description:

    IN+: Signal input.

    EN_PreChrg: High Z mode. Set to VDD to activate. Set to GND to disable.

    CNV: Convert input signal to sample

    Reset: Return all internal charged nodes to zero.

    GND: GND.

    IN_SlewAlarm: Slew rate monitoring. GND if good. VDD if exceeded.

    Ref: Reference voltage.

    Vout: Quantized voltage output (for observation)

    Hope this helps!

    Regards,

    Jeff

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