AngularJS data bind in ng-bind-html?

Is it possible to bind data of scope variable to a html that is about to bind as ng-bind-html?

ie, I have a

html ="<div>{{caption}}</div>";

and my angular template look like,

<div ng-bind-html="html"></div>

the value of scope variable caption is set in angular controller.

So, I want to bind data in {{caption}}.

Thanks in advance..