The recommended PCB layout for the MAX5461EXT+T involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the analog signal sources. Additionally, it's recommended to use a low-ESR capacitor for the VCC bypass and to keep the input and output traces as short as possible.
To ensure the accuracy of the MAX5461EXT+T's output voltage, it's essential to use a high-precision external reference voltage, keep the device's operating temperature within the specified range, and minimize noise and interference on the input and output lines.
The MAX5461EXT+T can drive a maximum capacitive load of 100nF. Exceeding this limit may cause instability or oscillation in the output voltage.
To troubleshoot issues with the MAX5461EXT+T's output voltage being out of regulation, check the input voltage, external reference voltage, and output load conditions. Ensure that the device is properly powered, and the input and output lines are not noisy or oscillating. Also, verify that the device is not overheating or operating outside its specified temperature range.
The MAX5461EXT+T is specified to operate up to 125°C. However, it's essential to ensure that the device is properly heat-sinked and that the operating temperature does not exceed the specified maximum junction temperature (Tj) of 150°C.
MAX5461EXT+T datasheet
by Maxim Integrated Products
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