A good PCB layout for the DG401DJ+ should include a solid ground plane, separate analog and digital power planes, and a star connection for the analog and digital grounds. Additionally, the device should be placed close to the analog power source, and the analog input traces should be kept short and shielded.
The DG401DJ+ requires a dual power supply with ±15V or ±12V analog power rails and a 5V digital power rail. The device also requires a bias voltage (VCC) of 5V, which should be decoupled with a 0.1μF capacitor. Additionally, the analog input voltage range should be within ±10V to ensure proper operation.
The DG401DJ+ can handle analog input frequencies up to 100kHz, but the device's bandwidth is limited to 50kHz. Signals above 50kHz may be attenuated or distorted, so it's recommended to filter the input signal to ensure accurate switching.
The DG401DJ+ can be programmed using a 3-wire serial interface (SCL, SDA, and CS). The device has a 16-bit register that controls the switching frequency and duty cycle. The user can write to this register using the serial interface to set the desired switching parameters.
The typical turn-on and turn-off times of the DG401DJ+ are 100ns and 50ns, respectively. However, these times can vary depending on the load capacitance, resistance, and inductance, as well as the power supply voltage and temperature.
DG401DJ+ datasheet
by Maxim Integrated Products
