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The internal resistance values of ADM4850ARZ

Question asked by Jane on Jun 9, 2014
Latest reply on Jun 12, 2014 by Jane

Hi Sir,

Here is a question from my customer.

'How much is internal resistance values of ADM4850ARZ?

Please give us the detail spec of resistance between pins 5-6 and between 5-7.'

I think the associated information is mentioned via ADM4850 datasheet: Device Input Resistance to GND: 220Kohm (TYP)


220K ohm is the value you get when you put Ohm meter probes on 2 pins of IC? Testing method is shown in the attached pic.

The customer detect ADM4850 is NG with low value of internal resistance via the ICT process, and this problem affect to their production.

The customer is asking is there a tolerance? Such as 220K +/- 5% or 10% or 20%?

The internal resistance measurement value from the customer:

Value at ICT process: ~168.7 K

After taking IC out of PCB: ~167.7K

Many thanks for your strong help in advance.