UC3635 Datasheet | Unitrode

FEATURES - - - - - - - - Precision Phase Locked Frequency Control System Crystal Oscillator Programmable Reference Frequency Dividers DESCRIPTION The UC1635 family of integrated circuits was designed for use in precision speed control of DC motors. An extension to the UC1633 line of phase locked controllers, these devices provide access to both of the digital phase detector’s inputs, and include a reference frequency divider output pin. With this added flexibility, this family of controllers can be used to obtain phase synchronization of multiple motors. Phase Detector with Absolute Frequency A reference frequency can be generated using the device’s crystal oscil Steering lator and programmable dividers. The oscillator operates using a broad Separate Divider Outputs and Phase range of crystals, or, can function as a buffer stage to an external fre Detector Input Pins quency source. Double Edge Option on the Frequency The phase detector responds proportionally to the phase error...