The recommended power-up sequence is to first apply the analog power supply (VDDA) and then the digital power supply (VDDD). This ensures that the analog circuitry is powered up before the digital circuitry.
The UDA1338H can be configured for master or slave mode by setting the appropriate values on the M/S pin. A logic high on the M/S pin sets the device to master mode, while a logic low sets it to slave mode.
The UDA1338H can support clock frequencies up to 50 MHz. However, the maximum clock frequency may be limited by the specific application and the quality of the clock signal.
To optimize the UDA1338H for low power consumption, ensure that the device is operated at the lowest possible clock frequency, and that the power-down mode is used when the device is not in use. Additionally, the analog power supply (VDDA) can be reduced to a minimum of 1.8 V to further reduce power consumption.
The recommended layout and routing for the UDA1338H involves keeping the analog and digital signal paths separate, using a solid ground plane, and minimizing the length of the clock signal traces. Additionally, the device should be placed close to the analog power supply (VDDA) and the digital power supply (VDDD) should be decoupled with a capacitor.
UDA1338H/N1,518 datasheet
by NXP Semiconductors
