The recommended PCB layout for the MAX9690CSA involves keeping the input and output traces as short as possible, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a 4-layer PCB with a dedicated layer for the power supply and another for the ground plane.
To optimize the MAX9690CSA for low noise performance, ensure that the device is operated within its recommended operating conditions, use a low-noise power supply, and minimize the length of the input and output traces. Additionally, consider using a ferrite bead or a pi-filter to reduce high-frequency noise.
The maximum input voltage that the MAX9690CSA can handle is 36V, but it's recommended to operate the device within its recommended operating range of 4.5V to 28V to ensure reliable operation and to prevent damage to the device.
The MAX9690CSA is rated for operation up to 125°C, but its performance may degrade at high temperatures. It's recommended to derate the device's output current and voltage at high temperatures to ensure reliable operation.
To troubleshoot issues with the MAX9690CSA, start by checking the device's input and output voltages, and ensure that the device is operated within its recommended operating conditions. Use an oscilloscope to check for noise and ripple on the output voltage, and verify that the device is properly soldered and connected to the PCB.
MAX9690CSA datasheet
by Maxim Integrated Products
