The recommended layout and placement for the MAX942CPA+ involves keeping the device away from high-current carrying traces, 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 power plane and a dedicated ground plane.
To ensure the MAX942CPA+ is properly powered, make sure to provide a clean and stable power supply, with a voltage range of 2.7V to 5.5V. Also, decouple the power supply with a 1uF capacitor and a 10nF capacitor in parallel, placed as close to the device as possible.
The MAX942CPA+ can handle a maximum current of 100mA per channel, with a total current limit of 200mA for all channels combined.
The MAX942CPA+ has a programmable gain amplifier, which can be configured using external resistors. The gain can be set to 1, 2, 4, 8, 16, or 32, depending on the application requirements.
The noise floor of the MAX942CPA+ is typically around 10nV/√Hz, making it suitable for low-noise applications such as audio and medical devices.
MAX942CPA+ datasheet
by Maxim Integrated Products
