Product Details
●HMC984LP4E is a high-performance, ultra-low phase noise, SiGe BiCMOS Phase-Frequency Detector and Charge Pump targeted to be used together with the HMC983LP5E (Fractional Frequency Divider) to together form a high performance, low noise, ultra low spurious emission fractional-N frequency synthesizer.
●Although best performance and maximum features are achieved when used together with the HMC983LP5E, the HMC984LP4E can also be used as a stand-alone, low phase noise phase frequency detector.
●The HMC984LP4E can receive differential VCO input, and a reference frequency as high as 150 MHz. It features a 14-bit reference frequency R-Divider, and automatic and/or configurable Lock Detect Indicator, as well as integrated CSP (Cycle Slip Prevention) capability, when used together with the HMC983LP5E, that significantly improves frequency lock time.
●Integrated Charge Pump phase swap option enables seamless interfaced to VCOs and active loop filters with inverted polarity.
●Additional features include adjustable Charge Pump gain and offset current that improve linearity and performance, and a Soft Reset feature that resets all register to default values without having to perform a power-cycle.
●The HMC984LP4E is housed in a compact 24 pin 4x4 mm LP4 package.
●### Features and Benefits
● Ultra-Low Noise:
●-231 dBc/Hz FOM Integer Mode
●-227 dBc/Hz FOM Fractional Mode
● Ultra Low Spurious Emissions:
●\- Less Than 60 dBc Fractional Spurious
● Differential Phase Detector Input
● 14-bit Reference Frequency Divider
● Lock Indicator Output
● Phase Measurement Capability
● GPIO (General Purpose Input/Output) Test Pin
● Cycle Slip Prevention Support with HMC984LP4E
● 24 pin, 4 x 4 mm, LP4E Package
