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  • OPA4251: scratches and dents on the parts ，even the wafers in it have been exposed of PN#OPA4251UA, asking for returning

    Part Number: OPA4251 OPA4251UA.zip As you can see ,there are some scratches and dents on the parts ，even the wafers in it have been exposed. This situation also violates the IPC Acceptability Criteria, and we cannot accept the use of this batch. We are now asking for returning the goods. Dear Team …
    • Answered

  • OPA4251: OPA4251UA Max Input Offset voltage

    Resolved
    Part Number: OPA4251 Other Parts Discussed in Thread: OPA251 , OPA241 Hi, Could you let me know Max input offset voltage of OPA4251UA, please? Customer wants to know information at "Ta = 25°C " and "Ta = –40°C to +85°C".…
    • Resolved
    • Answered

  • LM324: Possible causes for active filter showing slow roll-off

    Resolved
    Part Number: LM324 Other Parts Discussed in Thread: OPA4251 , OPA330 I have frequently used the LM324 to design Op-amp circuits. Just recently I stumbled upon a rather enigmatic problem for me. I'm designing a 6th Order, 100Hz low-pass , Non-inverting…
    • Resolved

  • LOG112: Self-oscillation at point close to negative saturation.

    Other Parts Discussed in Thread: OPA4277 , OPA4251 , LOG112 Notes on scheme: OPA4251 soldered instead of OPA4277. Q1 is not soldered( MOSFET and JFET selection). Then photodiode is close to full dark log amplifier starts self-oscillating. It could…

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