深圳市中立信电子科技有限公司

HMC700LP4E

锁相环 - PLL 8 GHz 16-Bit Fractional-N PLL

8 GHz 16-Bit Fractional-N PLL

Features HMC700LP4E

• 8 GHz, 16 bit prescaler

• Fractional or Integer Modes

• Ultra Low Phase Noise

6 GHz; 50 MHz Ref.

-103 / -108 dBc/Hz @ 20 kHz

(Frac / Integer)

Figure of Merit (FOM)

-221 / -226 dBc/Hz (Frac / Integer)

• 24 bit step size resolution, 3 Hz typ

• 200 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 HMC700LP4E

• Base Stations for Mobile Radio

• WiMAX

• Test & Measurement

• CAT V Equipment

• Phased Array Applications

• Simple FSK Links

• DDS Replacement

General Description

The HMC700LP4(E) is a SiGe BiCMOS fractional-N PLL. The PLL includes a very low noise digital phase frequency

detector (PFD), and a precision controlled charge pump.

The fractional PLL features an advanced delta-sigma 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.