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tl026 noise when input aty GND

Kamal Najmi
Expert 3295 points
Other Parts Discussed in Thread: TL026

hi,

 

my customer uses the TL026C with differencial output and input to GND with +/-6V.

the output is connected to two serial cap of 150nF and with 2 K load.

the output is pretty noisy, could you explainit?

i have the sch and plots.

 

  • 0
    TI__Guru*** 140006 points
    Kamal,

    The output is floating. Try replacing the 2k resistor with two 1k resistors in series then ground the node between the resistors.
    Measure noise. Then turn power to TL026 off and measure noise again (power off noise, not caused by TL026).