AD8552 spice model

Hi

I found AD 8552 spice model not working properly.Initially the file was not reading , then I found  there is two "dots' in before "subckt" declaration and I changed it and my spice program ( LT Spice) started reading. But I got a model without any labels, please check the attached image. I probably can do a trial and error to find the pins, but I am just wondering there is an updated model?

I have one more question. Is there any design or manufacturing change made to this particular amplifier recently (in last 5 years) because we are seeing some problems recently (in a nutshell a floating ground on output)? This question is a separate discussion but I am just wondering

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  • Hello,

    no need to go for try and error: the translation of the numbers to usual pin names is given in the cir-file, though the formatting is not ideal. I copy the correspondig part of the spice model with proper indention to show the mapping of names to numbers (1 is the noninverting input, 2 the inverting....):

                             * Node Assignments

                             *            noninverting input

                             *            |     inverting input

                             *            |     |     positive supply

                             *            |     |     |        negative supply

                             *            |     |     |        |      output

                             *            |     |     |        |      |

                             *            |     |     |        |      |

    ..SUBCKT AD8552        1    2    99    50    45

    You can easily change the labels in LTSpice symbol editor to more meaningfull text (a rightclick on the pin), you just have to keep the netlist order in the given sequence.

Reply
  • Hello,

    no need to go for try and error: the translation of the numbers to usual pin names is given in the cir-file, though the formatting is not ideal. I copy the correspondig part of the spice model with proper indention to show the mapping of names to numbers (1 is the noninverting input, 2 the inverting....):

                             * Node Assignments

                             *            noninverting input

                             *            |     inverting input

                             *            |     |     positive supply

                             *            |     |     |        negative supply

                             *            |     |     |        |      output

                             *            |     |     |        |      |

                             *            |     |     |        |      |

    ..SUBCKT AD8552        1    2    99    50    45

    You can easily change the labels in LTSpice symbol editor to more meaningfull text (a rightclick on the pin), you just have to keep the netlist order in the given sequence.

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