Maxim provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for audio circuit board design, such as separating analog and digital grounds, using a solid ground plane, and minimizing trace lengths and widths.
The MAX9718AEBL+TG45 requires a 1.8V to 3.6V power supply, and it's essential to decouple the power pins with 1uF and 10nF capacitors to reduce noise and ensure stable operation. Additionally, a 10kΩ pull-up resistor on the SHDN pin is recommended to prevent unwanted shutdown.
The MAX9718AEBL+TG45 can handle input signal levels up to 2.2Vrms, but it's recommended to limit the input signal to 1.5Vrms to ensure optimal performance and prevent distortion.
The gain of the MAX9718AEBL+TG45 can be configured using the GAIN pin, which can be connected to VDD, GND, or a resistive divider to set the gain to 0dB, -10dB, or -20dB, respectively.
The typical current consumption of the MAX9718AEBL+TG45 is around 2.5mA, but this can vary depending on the operating mode, input signal level, and gain setting.
MAX9718AEBL+TG45 datasheet
by Maxim Integrated Products
Findchips
