Education Library

Frequently Asked Question

Why doesn't the mini-divider support the divide ratio I want?

The reason that not all divide ratios, or other settings, are available on the mini-dividers is that the 11 4-state logic must be decoded internally, and there is a limited decode space available. Because not every single feature could be accommodated a reasonable subset of all the possible device settings is provided. The AD9513 and AD9514 provide all divide ratios from 1 to 32 on OUT2 only. The AD9515 provides all divide ratios from 1 to 32, except for divide-by-13, on OUT2. The other output channels vary in their divide-by values. See the data sheet for a specific product (AD9513, AD9514, AD9515) for explicit details.