A good PCB layout for the MAX9118EXK+T involves keeping the input and output traces separate, 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 minimize noise and ensure optimal performance.
The MAX9118EXK+T requires a single 2.7V to 5.5V power supply. It's recommended to power the device with a clean, low-noise power supply, and to sequence the power-on in the following order: VCC, then VIN. The device also has an internal power-on reset circuit that ensures the device is properly reset during power-up.
The MAX9118EXK+T can handle input voltages up to 5.5V. The device has internal electrostatic discharge (ESD) protection and overvoltage protection (OVP) features that protect the device from input voltages exceeding 5.5V. The OVP feature limits the input voltage to 5.5V, preventing damage to the device.
The MAX9118EXK+T has a programmable gain amplifier that can be configured for different gain settings using external resistors. The device offers three gain options: 1, 2, or 4, which can be selected by connecting the GAIN pin to VCC, GND, or leaving it open, respectively.
The output impedance of the MAX9118EXK+T is typically around 100 ohms. This relatively low output impedance ensures that the device can drive heavy loads and maintain a stable output signal. However, it's recommended to use a buffer amplifier or an op-amp with a low input impedance to ensure a stable output signal.
MAX9118EXK+T datasheet
by Maxim Integrated Products
