To minimize noise and ensure reliable operation, it is recommended to follow a star-grounding scheme, keep the analog and digital grounds separate, and use a solid ground plane. Additionally, keep the signal traces short and away from noise sources, and use a low-ESR capacitor for power supply decoupling.
The address pins (A0-A2) should be connected to a fixed logic level (VCC or GND) to set the device address. The address pins should be tied to a fixed level before powering up the device. It is also recommended to use pull-up resistors on the address pins to ensure a stable logic level.
The maximum operating frequency of the DG419LDJ+ is 400 kHz. Operating the device at higher frequencies can increase power consumption, reduce reliability, and affect the accuracy of the analog switches. It is recommended to operate the device within the specified frequency range to ensure optimal performance and power consumption.
The DG419LDJ+ has a built-in power-on reset (POR) and brown-out detection (BOD) feature. The POR ensures that the device resets properly during power-up, while the BOD detects voltage drops and resets the device if the voltage falls below a certain threshold. To handle these features, ensure that the power supply is stable and within the recommended operating range, and use a capacitor to filter out noise and voltage spikes.
A recommended power supply decoupling scheme for the DG419LDJ+ includes a 10 uF ceramic capacitor in parallel with a 1 uF ceramic capacitor, both connected between the VCC and GND pins. This scheme helps to filter out noise and voltage spikes, ensuring stable operation of the device.
DG419LDJ+ datasheet
by Maxim Integrated Products
