The recommended PCB layout for the MAX985EBT+TG45 involves placing the device near the audio input, using a solid ground plane, and keeping the analog and digital grounds separate. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To optimize the performance of the MAX985EBT+TG45 in noisy environments, use a low-pass filter at the input, add a shield around the device, and use a ferrite bead or a common-mode choke to filter out high-frequency noise. Additionally, ensure that the power supply is well-regulated and decoupled.
The MAX985EBT+TG45 can tolerate a maximum power supply voltage of 5.5V. Exceeding this voltage may damage the device. It's recommended to use a voltage regulator to regulate the power supply voltage to the recommended operating range of 2.7V to 5.5V.
To ensure that the MAX985EBT+TG45 is properly biased, connect the BYPASS pin to a 0.1uF capacitor to ground, and connect the VREF pin to a 1uF capacitor to ground. Additionally, ensure that the power supply voltage is within the recommended operating range.
The MAX985EBT+TG45 can deliver a maximum output current of 100mA per channel. Exceeding this current may damage the device or affect its performance.
MAX985EBT+TG45 datasheet
by Maxim Integrated Products
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