HMC704LP4E Datasheet, PDF (1/44 Pages) Hittite Microwave Corporation – 8 GHz fractionaL-N PLL

v04.0215
Typical Applications
The HMC704LP4E is ideal for:
• Microwave Point-to-Point Radios
• Base Stations for Mobile Radio
(GSM, PCS, DCS, CDMA, WCDMA)
• Wireless LANs, WiMAX
• Communications Test Equipment
• CATV Equipment
• Automotive
HMC704LP4E
8 GHZ FRACTIONAL-N PLL
Features
Wide band: DC - 8 GHz RF Input,
4 GHz 19-bit Prescaler
Industry Leading Phase Noise & Spurious:
-112 dBc/Hz @ 8 GHz Fractional, 50 kHz Offset
Figure of Merit
-230 dBc/Hz Fractional Mode
-233 dBc/Hz Integer Mode 100 MHz PFD
High PFD rate: 100 MHz
24 Lead 4x4 mm SMT Package: 16 mm²
Functional Diagram
General Description
The HMC704LP4E has been designed for the best
phase noise and lowest spurious content possible in
an integrated PLL.
Fabricated in a SiGe BiCMOS process, this
Fractional-N PLL con­sists of a very low noise digital
phase detector, VCO divider, reference divider and a
precision controlled charge pump.
Ultra low in-close phase noise and low spurious allows
wide loop bandwidths for faster fre­quency hopping and
low micro-phonics.
Exact frequency mode with 24-bit fractional mod­ulator
provides the ability to generate fractional frequencies
with zero frequency error, an important feature for
Digital Pre-Distortion systems.
The serial interface offers read back capability and is
compatible with a wide variety of protocols.
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