SNAS847C November 2023 – October 2024 LMK3H0102
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
When the decimal portion of the FOD divide value is near an integer boundary, integer boundary spurs can occur. In general, this "integer boundary" is when the decimal portion is between 0.9 and 1, or 0 and 0.1. For example, if the BAW frequency is 2467 MHz, and an output of 122.88 MHz, then the FOD must run at 245.76 MHz. 2467 MHz divided by 245.76 MHz is approximately 10.038. The decimal portion of the divide value is 0.038, which falls between 0 and 0.1, and thus means that generating a 122.88 MHz output can result in spurs in the 12 kHz to 20 MHz band on the output clock. In some cases, proper frequency planning can account for this by increasing the FOD frequency and the channel divider value. For any concerns about integer boundary spurs for a specific frequency plan, contact TI.