• TI Thinks Resolved

ISO7740: Review of circuit

Intellectual 590 points

Replies: 3

Views: 62

Part Number: ISO7740

Hi,

Can you please review the below circuit ?

  • Hi Sahol,

    Thanks for sharing the schematic for review. The schematic looks good, please see below a couple suggestions.

    1. Please make sure the 0.1µF decaps are placed close to device VCC/GND pins in the PCB layout, preferably within 2mm of distance on the same layer as device.
    2. Floating EN pins are prone to EMI noises, hence, it is recommended that they are hard pulled up to their respective VCC, either directly or through a pull-up resistor.

    Regards,
    Koteshwar Rao

  • In reply to Koteshwar Rao:

    Thank you for your review

    Please see my comments in BOLD.

    1. Please make sure the 0.1µF decaps are placed close to device VCC/GND pins in the PCB layout, preferably within 2mm of distance on the same layer as device.(We have followed the same)
    2. Floating EN pins are prone to EMI noises, hence, it is recommended that they are hard pulled up to their respective VCC, either directly or through a pull-up resistor.(We have implemented it))
  • In reply to Sahol Berde:

    Hi Sahol,

    Thank you for confirming.

    Regards,
    Koteshwar Rao