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LM4562: Differences between LM4562 and LME49720

Part Number: LM4562
Other Parts Discussed in Thread: LME49720

Hi Guys,

Could you tell us the differences between LM4562 and LME49720?

The only difference I could see clearly is the price and the Vn( a difference of 0.2). LME49720 is significantly more expensive than LM4562. Why is that? Kindly enlighten us to give an idea for the deciding factor.

In addition to that, which instrument amplifier would you suggest? The customer's application is to make a common mode rejection electret microphone pre-amplifier. Integrated instrumentation amplifier inherently have very low output and somehow has frequency built-in filter."

Thank you in advance for the support. 

Best regards,