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I have two chips that I don't really know what they could be. The chips with the Z253 marking are connected to a connector, micro and some other things; whereas the N1 marked chips are connected to an op amp. The N1 chip I think could be a transistor, just because of the way it looks. The Z253 I think could be a voltage regulator, just because it is connected to ground for both the op amp and the ADC and its in between micro and ADC. I am not too sure though, as I don't have a lot of experience with reverse engineering. enter image description here enter image description here

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  • \$\begingroup\$ Please add dimensions. \$\endgroup\$
    – nanash1
    Commented Jun 17 at 10:52
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    \$\begingroup\$ @nanash1 I don't have calipers at the moment, but measuring with the ruler, N1 is 4x2 mm and Z253 is 2x1 mm \$\endgroup\$
    – Cillantro
    Commented Jun 17 at 11:39

1 Answer 1

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Z253 is an Onsemi NC7SZ125P5X UHS buffer.

enter image description here

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(Source: taobao)


N1 is a Diodes Inc FCX491 NPN BJT.

enter image description here

enter image description here

(Source: lcsc.com)

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