I am currently designing a PCB board for a CMOS sensor camera and am considering the power supply for this CMOS sensor. I noticed that the CSI interface of the Jetson Orin NX provides a 3.3V power supply. Can I use this power supply directly as the voltage supply for the CMOS sensor (with the addition of a filter capacitor)? What is the power supply capability of this pin? Is additional circuitry required to ensure stable power supply? It seems that the IMX219 camera uses the voltage from this pin as its power supply.
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Based on the provided context, I’ll address your questions regarding the power supply for the CMOS sensor camera on the Jetson Orin NX.
Can I use the 3.3V power supply from the CSI interface directly as the voltage supply for the CMOS sensor with the addition of a filter capacitor?
The CSI interface on the Jetson Orin NX provides a 3.3V power supply, but it’s essential to consider the power supply capability of this pin before using it directly for the CMOS sensor.
Power supply capability of the CSI interface pin
Unfortunately, the provided context does not explicitly state the power supply capability of the CSI interface pin on the Jetson Orin NX. However, it’s crucial to note that the Jetson Orin NX module is not hot-pluggable, and the main power supply (to VDD_IN pins) must be disconnected and adequate time allowed for the various power rails to fully discharge before installing or removing the module.
Comparison with Jetson AGX Orin
The Jetson AGX Orin series has a similar power management feature, but the context does not provide a direct comparison of the power supply capability of the CSI interface pin between the two modules.
Additional circuitry required to ensure stable power supply
To ensure a stable power supply for the CMOS sensor, it’s recommended to use additional circuitry, such as a voltage regulator or a power management IC (PMIC), to regulate the voltage and provide a stable power supply. This is because the CSI interface pin might not be designed to provide a high current or stable voltage for the CMOS sensor.
IMX219 camera power supply
The IMX219 camera uses the voltage from the CSI interface pin as its power supply, but this does not necessarily mean that your CMOS sensor camera can use the same power supply directly. The IMX219 camera might have additional circuitry or design considerations that allow it to use the CSI interface pin voltage, which might not be applicable to your CMOS sensor camera.
In summary, while the CSI interface on the Jetson Orin NX provides a 3.3V power supply, it’s recommended to use additional circuitry, such as a voltage regulator or PMIC, to ensure a stable power supply for the CMOS sensor camera. The power supply capability of the CSI interface pin is not explicitly stated in the provided context, and it’s essential to consider the specific requirements of your CMOS sensor camera when designing the power supply circuitry.
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Please refer to Jetson Orin Nano Developer Kit Carrier Board Specification https://developer.nvidia.com/downloads/assets/embedded/secure/jetson/orin_nano/docs/jetson_orin_nano_devkit_carrier_board_specification_sp.pdf
Also, Jetson Download Center | NVIDIA Developer might be useful as reference.