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LMP2011: Regarding replacement for Analog Devices AD8571ARZ

hiroshi.yamada
Intellectual 515 points
Part Number: LMP2011
Other Parts Discussed in Thread: OPA388, , TINA-TI

Tool/software:

We have used the Analog Devices AD8571ARZ in previous products.

In order to change this to a T.I product, we searched the cross reference on the website and found that the LM2011 was functionally equivalent and even better in some functions, so we adopted it.

After checking the prototype and asking about what we thought was a problem with the offset voltage on the forum, it turned out that the performance was inferior to the AD8571ARZ.

Please tell me how to select a rail-to-rail op amp with performance comparable to or better than the AD8571ARZ.

Best regards,

Hiroshi Yamada

  • 0
    TI__Guru**** 167546 points

    Hello Yamada-san,

    I suggest, OPA388 IDR 

    ► Part Number ad8571 lmp2011 OPA388
    Manufacturer ADI TI TI
    Channel Count 1 1 1
    Vs Range 2.7V to 5.5V 2.7V to 5V 2.5V to 5.5V
    GBW (MHz) 1.5 3 10
    Slew Rate (V/µs) 0.4 4 5
    Vos max @ 25oC (mV) 0.005 0.025 0.005
    Vos Drift, typ (µV/oC)     0.005
    Rail-to-Rail In, Out In to V-, Out In, Out
    IQ typ (mA) 0.975 0.919 1.7
    VN (nV/√Hz) 51 35 7
    ISC typ (mA) 30 15 60
    IBias (Max) (pA) 50 4 350
    Operating Temperature (°C) -40 to 125 -40 to 125 -40 to 125
    Available Packages 8 ld SOIC 8 ld MSOP SOIC-8, SOT-23-5 SOIC-8, SOT-23-5, VSSOP-8
  • 0 in reply to Ron Michallick
    Intellectual 515 points

    Hi Ron,

    Thank you for your quick reply.

    Thank you for recommending OPA388IDR.

    After posting on the forum, I investigated it myself.

    As a result, I also think that OPA388ID is appropriate and have requested a sample.

    I'm glad we share the same view.

    I'd like to verify it by simulating it with Tina-TI or something similar.

    Best regards,

    Hiroshi Yamada