HMC984

LAST TIME BUY

HMC984

Digital Phase-Frequency Detector

LAST TIME BUY

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Features

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 × 4 mm, LP4E Package

Additional 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 4×4 mm LP4 package.

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Ask a Question

Submit your question below and we will return the best answer from ADI’s knowledge database:

Other places you can find help

Support

Analog Devices Support Portal is a one-stop shop to answer all your ADI questions.

Visit the ADI Support Page

Ask the ADI community for help.

Ask the EngineerZone Community

FAQs

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Part Models 2

1ku List Price

price unavailable

Technical Documents 1

HMC984LP4E: Digital Phase-Frequency Detector Data Sheet 05/29/2018

Reference Materials 2

RF, Microwave, and Millimeter Wave Product Selection Guide 07/13/2018

4 x 4 mm QFN Tape Specification (LP4, LP4B, LP4C, LC4, LC4B) 10/28/2015

Design Resources 2

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
HMC984LP4E	24-Lead QFN (4mm x 4mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys
HMC984LP4ETR	24-Lead QFN (4mm x 4mm w/ EP)	HTML Material Declaration HTML Reliablity Data	Ultra Librarian SamacSys