The recommended layout and routing for the MAX7318AUG+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the device and the capacitors. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure the MAX7318AUG+ is properly powered, use a high-quality, low-ESR capacitor (e.g., 10uF) between VCC and GND, and a 0.1uF bypass capacitor between VCC and GND near the device. Also, ensure the power supply is stable and within the recommended operating range.
The maximum frequency of the I2C bus for the MAX7318AUG+ is 400 kHz. However, the device can operate at higher frequencies, but with reduced reliability and increased power consumption.
The interrupt output (INT) of the MAX7318AUG+ is an open-drain output, so it requires a pull-up resistor to VCC. The interrupt is active-low, and it is recommended to use a debouncing circuit to filter out noise and glitches.
The internal pull-up resistors on the MAX7318AUG+ are used to pull up the SCL and SDA lines of the I2C bus to VCC when the device is not driving the bus. This helps to reduce power consumption and improve noise immunity.
MAX7318AUG+ datasheet
by Maxim Integrated Products
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