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OPT3001: Schematic diagram check with OPT3001

Shenhua Zhang
Prodigy 640 points
Part Number: OPT3001

My customer is using OPT3001 in OLED screen. Here is the Schematic diagram.

They want to know answers below:

1. Is it OK? I know that 100nF bypass capacitor is absent.

2. Where does AADR pin need to connect?  Could it be dummy?

  • 0
    TI__Mastermind 25845 points
    Hi Shenhua,

    ADDR pin should be connected per the datasheet depending on what address you want for OPT3001. If default is okay you can just ground this. You should also check that I2C pull up resistors are good for the bus capacitance. Let me know if you need more details for doing this check. If you do not have many devices on the bus and lines are not super long the ones you have should work.

    For the 0.1uF cap, the device should function okay as long as the voltage requirements are met on the pic under load. You may have more noise on the voltage line. The effect of this can be estimated from the PSRR chart on the datasheet once you measure the noise on the VCC pin without the cap.

    Best,

    Alex