器件名称:
ML145170-7P
功能描述:
Phase-Frequency Detector PLL Frequency Synthesizer with Serial Interface
文件大小:
13436.83KB 共26页
简 介:
ML145170 Phase–Frequency Detector PLL Frequency Synthesizer with Serial Interface Legacy Device: Motorola/Freescale MC145170-2 The Lansdale ML145170 is a single–chip synthesizer capable of direct usage in the MF, HF and VHF bands. A special architecture makes this PLL easy to program. Either a bit– or byte–oriented format may be used. 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 2–byte serial transfer to the 16-bit N register. The device features fully programmable R and N counters, an amplifier at the f in pin, on–chip support of an external crystal, a programmable reference output, and both single and double–ended phase detectors with linear transfer functions (no dead zones). A configuration (C) register allows the part to be configured to meet various applications. A patented feature allows the C register to shut off unused outputs, thereby minimizing noise and interference. In order to reduce lock times and prevent erroneous data from being loaded into the counters, a patented jam load feature is included. Whenever a new divide ratio is loaded into the N register, both the N and R counters are jam–loaded with their respective values and begin counting down together. The phase detectors are also initialized during the jam load. Operating Voltage Range: 2.7 to 5.5 V Operating Temperature Range: TA = –40 to +85 C Maximum Operating Frequency: 185 MHz @ Vin =……
