A good PCB layout for the DG202CJ+ involves keeping the analog and digital grounds separate, using a solid ground plane, and placing the device close to the power supply. Additionally, it's recommended to use a low-ESR capacitor for the VCC pin and to keep the input and output traces as short as possible.
The DG202CJ+ requires a single 2.7V to 5.5V power supply. It's recommended to power the device with a low-noise, low-dropout regulator. The power sequencing requirement is to power up the VCC pin before the logic inputs, and to power down the VCC pin after the logic inputs.
The recommended input signal range for the DG202CJ+ is 0V to VCC, and the input impedance is typically around 10kΩ. It's recommended to use a series resistor to limit the input current and to ensure the input signal is within the specified range.
During power-up, it's recommended to sequence the power supply to the DG202CJ+ in the following order: VCC, then logic inputs. During power-down, sequence the power supply in the reverse order: logic inputs, then VCC. This helps prevent latch-up and ensures the device is properly powered down.
The DG202CJ+ has a maximum junction temperature of 150°C. To ensure reliable operation over temperature, it's recommended to keep the device within the specified operating temperature range (-40°C to 85°C), use a heat sink if necessary, and ensure good airflow around the device.
DG202CJ+ datasheet
by Maxim Integrated Products
