Circuit arrangement for a charging pump for phase locked loops has alternative path for output potential according to switching condition

摘要

A circuit for a charging pump (4) comprises current source and/or sink branches which provide an output current (IOUT) and connect to a transistor pump (T1,T2) connected to two load connections. The output potential passes through a switching device (SR1,SR2) is these are in a second switching condition. An Independent claim is also included for a phase regulating circuit having a charging pump as above.