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HMC700LP4 / HMC700LP4E

8 GHz 16-Bit Fractional-N PLL

Product Details

Data Sheet
Package Layout
Tape & Reel

Quality & Reliability

Environmental Data Sheet
Qualification Test Reports

Press & Media

Featured Article
Product Press Release

Life Cycle Status

Production, Recommended for New Designs

Product Support

User's Manual
Eval. PCB Schematic
Software Download

Freq. (GHz) Function Max. PFD Freq. (MHz) Figure of Merit (Fract/Int) (dBc/Hz) Freq. Res. (Hz) Bias Supply Package
0.1 - 8 Fractional-N 105 -221 / -226 3 +5V @ 5.5mA
+3.3V @ 90mA

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• 8 GHz, 16 bit prescaler
• Fractional or Integer Modes
• 24 bit step size resolution, 3 Hz typ
• Ultra Low Phase Noise
   6 GHz; 50 MHz Ref.
   -103 / -108 dBc/Hz @ 20 kHz
   Figure of Merit (FOM)
   -221/-227 dBc/Hz (Frac/INT)
• 225 MHz, 14bit reference path input
• Direct FSK Modulation Mode
• Cycle Slip Prevention
• Read / Write Serial Port, Chip ID
• 24 Lead 4x4mm SMT Package: 16mm²

Typical Applications

• Base Stations for Mobile Radio
• Test & Measurement
• CATV Equipment
• Phased Array Applications
• Simple FSK Links
• DDS Replacement

Functional Diagram

General Description

The HMC700LP4(E) is a SiGe BiCMOS fractional-N frequency synthesizer. The synthesizer includes a very low noise digital phase frequency detector (PFD), and a precision controlled charge pump.

The fractional synthesizer features an advanced deltasigma modulator design that allows both ultra-fine step sizes and very low spurious products. Spurious outputs are low enough to eliminate the need for costly Direct Digital Synthesis (DDS) references in many applications.

The HMC700LP4(E) phase-frequency detector (PFD) features cycle slip prevention (CSP) technology that allows faster frequency hopping times.

Ultra low in-close phase noise and low spurious also permit architectures with wider loop bandwidths for faster frequency hopping and low micro-phonics. FSK mode allows the synthesizer to be used as a simple low cost direct FM transmitter source.