The recommended layout and routing for the MAX1246BCEE+ involves keeping the analog and digital grounds separate, using a solid ground plane, and minimizing the length of the traces between the ADC and the analog input pins. Additionally, it's recommended to use a low-ESR capacitor for the VCC pin and to keep the clock signal traces away from the analog input traces.
The MAX1246BCEE+ has an internal calibration circuit that is enabled by applying a specific sequence of commands to the device. The calibration process involves writing a series of codes to the device's control registers, which sets the internal references and biases. The datasheet provides a detailed calibration procedure that should be followed to ensure accurate conversions.
The maximum sampling rate of the MAX1246BCEE+ is 1.5Msps, and it can be achieved by setting the clock frequency to 24MHz. However, increasing the sampling rate also increases the power consumption of the device. The power consumption of the MAX1246BCEE+ is directly proportional to the clock frequency, so it's essential to balance the sampling rate with power consumption requirements.
The MAX1246BCEE+ has internal overvoltage protection (OVP) and undervoltage protection (UVP) circuits that prevent damage to the device in case of voltage excursions on the analog input pins. The OVP circuit limits the input voltage to a maximum of 5.5V, while the UVP circuit prevents the device from operating below a minimum voltage of 2.7V.
The recommended power-up sequence for the MAX1246BCEE+ involves applying the analog power supply (VCC) before the digital power supply (VDD). This sequence is important because it ensures that the internal analog circuits are powered up before the digital circuits, which prevents any potential latch-up or damage to the device.
MAX1246BCEE+ datasheet
by Maxim Integrated Products
