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I couldn't find any information on this IC. What is it?

enter image description here

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    \$\begingroup\$ It’s from Analog Devices, from the logo. What type of circuit is it in, and can you measure the pin pitch? \$\endgroup\$
    – Frog
    Commented Sep 20, 2023 at 6:50
  • \$\begingroup\$ Unfortunately I can't do that and this is from an electrosurgical unit \$\endgroup\$
    – Angelina
    Commented Sep 20, 2023 at 6:54
  • \$\begingroup\$ Since this is clearly an AD part, you could also just ask this to their tech support. \$\endgroup\$
    – Lundin
    Commented Sep 20, 2023 at 6:58

1 Answer 1

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It's an Analog Devices ADA4891-2ARMZ amplifier.

enter image description here

enter image description here

(Source: lcsc.com)

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  • \$\begingroup\$ Do you know anything that can replace it and has the same spec ? sorry to bother you too much \$\endgroup\$
    – Angelina
    Commented Sep 20, 2023 at 7:12
  • \$\begingroup\$ @Angelina Well, why not replace it with the same part? It's readily available at all major suppliers. \$\endgroup\$
    – nanash1
    Commented Sep 20, 2023 at 7:18
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    \$\begingroup\$ @Angelina Without knowing anything about the rest of the circuit, it's impossible to give informed suggestions. Also, trying to repair medical equipment without (assumably) much knowledge about electronics sounds like a bad idea to say the least. \$\endgroup\$
    – nanash1
    Commented Sep 20, 2023 at 7:53
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    \$\begingroup\$ @Angelina You don't say where you are located. If you are in the US, Digikey can often get the part shipped the same day (call and talk to a person and explain the situation for best results) and you can have the part early morning the next day. \$\endgroup\$
    – notloc
    Commented Sep 20, 2023 at 17:50
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    \$\begingroup\$ @Angelina If's medial equipment do you have a list of approved suppliers with the required quality traceability you must use? \$\endgroup\$ Commented Sep 20, 2023 at 22:34

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