MLE145170-5P

Description

Item Description:

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 fin 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.

Product Specs:

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