MC145192

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145192/D Low-Voltage 1.1 GHz PLL Frequency Synthesizer Includes On–Board 64/65 Prescaler The MC145192 is a low–voltage single–package synthesizer with serial interface capable of direct usage up to 1.1 GHz. A special architecture makes this PLL very easy to program because a byte–oriented format is utilized. Due to the patented BitGrabber™ registers, no address/steering bits are required for random access of the three registers. Thus, tuning can be accomplished via a 3–byte serial transfer to the 24–bit A register. The interface is both SPI and MICROWIRE™ compatible. The device features a single–ended current source/sink phase detector A output and a double–ended phase detector B output. Both phase detectors have linear transfer functions (no dead zones). The maximum current of the single–ended phase detector output is determined by an external resistor tied from the Rx pin to ground. This current can be varied via the serial port. The MC145192 phase/frequency detector B φ R and φ V outputs can be powered from 2.7 to 5.5 V. This is optimized for 3.0 V systems. The phase/frequency detector A PDout output must be powered from 4.5 to 5.5 V, and is optimized for a 5 volt supply. This part includes a differential RF input which may be operated in a single–ended mode. Also featured are on–board support of an external crystal and a programmable reference output. The R, A, and N counters are fully programmable. The C r...