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OPA1637: OP-amp output configuration

Vamsi Dhanunjaya Rao
Prodigy 120 points

Part Number: OPA1637

Tool/software:

In one of audio application we have used the differential op-amp. Due to some bill of material mistake one of the output of differential op-amp is shorted to ground through 2.2uF Capacitor. Will this impact any failure of op-amp or any signal out put is lost. Can any one comment on this?

  • 0
    TI__Guru 55466 points

    Hi Dhanunjaya,

    Fully-differential amplifiers require a symmetrical circuit board layout, with good component matching on the positive and negative paths to provide optimal CMRR, noise performance, low gain error, and optimal AC performance (low distortion). An unintended large 2.2uF capacitor connected to one of the outputs will unevenly load one of the outputs of the fully-differential amplifier, greatly reducing the bandwidth of one of the outputs, degrading the bandwidth performance, and likely causing severe degradation on the AC performance, stability, and other performance issues.

    Regards,

    Luis