
HMC704LP4E
v03.1211
8 GHz fractionaL-n PLL
For price, delivery, and to place orders: Hittite Microwave Corporation,20 Alpha Road, Chelmsford, MA
01824 Phone: 978-250-3343
Fax: 978-250-3373
Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
P
LL
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5 - 1
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
functional Diagram
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
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.