If you're looking for tv broadcast quality then no doubt you will also want professional microphones, professional lights, professional editing system with broadcast monitor, monitor speakers etc etc.
The notion of 'broadcast quality' is a bit of a misnomer. This arbitrary definition was initially perpetuated by tv stations (who seem to have no trouble running non 'broadcast quality' material if it is sufficiently engaging or salacious). It is also sometimes used incorrectly and interchangeably with '3 chip cameras'. These days it seems to be most trumpeted by some in the videography field.
If you're looking for a decent low budget dv camera suitable for a wide variety of uses I would recommend looking for a second-hand Sony VX2000 or Canon GL2. If you are looking for 16:9 screen ratio then a Sony PDX10. While it is debateable whether these cameras can be defined as 'broadcast quality', they have all been used to produce programs that have been broadcast. And they all hold the capacity, in the hands of a skilled operator, to produce professional looking results, particularly for documentary.