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RC4580: Upgrading op amps alpine H800 NJM4580

jose A Solis
Prodigy 10 points
Part Number: RC4580
Other Parts Discussed in Thread: OPA1662, OPA1642,

I'm planing to upgrade my alpine PXA-H800 opamps

I already upgrade my power supply caps too nichicon now i.want too change out the jrc 4580 opamps as there

General use and not for audio i seen lots of post some use the opa 1642 others use AD823A and the opa1662

And , were there any other modifications done for the opamps to work in place of the njm4580 or can i just use jrc 2608 any suggestions on a good audio opamp replacment for the H800 and what work well as a drop in replacment

  • 0
    TI__Guru** 111175 points

    Hi Jose,

    Welcome to e2e.
    We'll review your questions and provide some comments within today.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to Ivan Salazar
    TI__Guru** 111175 points

    Jose,

    OPA1642 and OPA1662 are both good options if you're looking for an op amp focused on audio applications.
    Both have rail-to-rail outputs, but OPA1662 has a better common-mode input range.
    OPA1662 is bipolar input (same as RC4580) while OPA1642 is JFET input for a lower input bias current. It would depend on the specs you're most interested to improve.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators