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EK1HMC7044LP10B User Guide
UG-826
One Technology Way • P. O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Te l: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluating the HMC7044 Dual Loop Clock Jitter Cleaner
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 10
FEATURES
Simple power connection using USB connection and
on-board LDO voltage regulators
LDOs can be bypassed for power measurements
AC-coupled differential SMA connectors
SMA connectors for
2 reference Inputs
6 clock outputs
1 VCXO output
Microsoft Windows®–based evaluation software with
simple graphical user interface
On-board PLL loop filter
Easy access to digital input/output and diagnostic signals
via input/output header (4 GPIOs)
Status LEDs for diagnostic signals
USB computer interface
EVALUATION KIT CONTENTS
EV3HMC7044LP10B evaluation board
USB interface board and USB cable
EK1HMC7044LP10B user guide
GENERAL DESCRIPTION
This user guide describe the hardware and software of the
HMC7044 evaluation kit. The evaluation board schematic and
printed circuit board (PCB) layout artwork can be found on the
EK1HMC7044LP10B product page at www.analog.com.
The HMC7044 meets the requirements of multicarrier GSM
and LTE base station designs and offers a wide range of clock
management and distribution features to simplify baseband and
radio card clock tree designs. The high performance dual-loop core
of the HMC7044 enables the base station designer to attenuate the
incoming jitter of a primary system reference clock, such as a
CPRI source, with the help of the narrow-band configured first
PLL loop, which disciplines an external VCXO, and to generate
the low phase noise, high frequency clocks with the wider-band
second PLL to drive data converter sample clock inputs.
The EV3HMC7044LP10B evaluation board is a compact, easy
to use platform for evaluating all the features of the HMC7044.
A 122.88 MHz VCXO is mounted on the evaluation board to
provide a complete solution. All inputs and outputs are
configured as differential on the evaluation board.
Full specifications on the HMC7044 are available in the product
data sheet, which should be consulted in conjunction with this
user guide when working with the evaluation board.
EVALUATION BOARD PHOTOGRAPH
13041-001
Figure 1.
