The recommended PCB layout for the MAX4245AXT+T involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the 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 MAX4245AXT+T is operating within its recommended operating conditions, verify that the supply voltage (VCC) is within the range of 2.7V to 5.5V, the input common-mode voltage is within the range of VCC-1.5V to VCC+0.5V, and the junction temperature is within the range of -40°C to +125°C.
The maximum allowable input voltage for the MAX4245AXT+T is 5.5V. Exceeding this voltage may damage the device.
The gain of the MAX4245AXT+T can be calculated using the formula: Gain (dB) = 20 * log10 (Rf/Rg), where Rf is the feedback resistance and Rg is the gain resistance.
The NOISE REDUCTION pin on the MAX4245AXT+T is used to reduce the noise in the output signal. When this pin is connected to VCC, it enables the noise reduction feature, which reduces the output noise by approximately 10dB.
MAX4245AXT+T datasheet
by Maxim Integrated Products
