Maxim provides a recommended PCB layout in the DS21455 evaluation board documentation, which includes guidelines for component placement, routing, and thermal management to ensure optimal performance and minimize noise.
The DS21455 can be configured for a specific clock frequency using the Clock Control Register (CCR) and the Clock Divider Register (CDR). Refer to the datasheet for the specific register settings and equations to calculate the desired clock frequency.
The DS21455 has a maximum input voltage tolerance of 5.5V, which is specified in the Absolute Maximum Ratings section of the datasheet. Exceeding this voltage may damage the device.
Common issues that may prevent the PLL from locking include incorrect register settings, inadequate power supply decoupling, or excessive noise on the input clock signal. Check the datasheet for troubleshooting guidelines and ensure that the device is properly configured and powered.
Yes, the DS21455 can operate with a non-50% duty cycle clock input, but the device's performance may be affected. The datasheet provides guidelines for clock input duty cycle and jitter tolerance.
DS21455 datasheet
by Maxim Integrated Products
