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HMC778LP6CE
FRACTIONAL-N PLL WITH
INTEGRATED VCO, 9.6 - 10.8 GHz
General Description
The HMC778LP6CE is a fully functioned Fractional-N Phase-Locked-Loop (PLL) Frequency Synthesizer with an
integrated Voltage Controlled Oscillator (VCO). The input reference frequency range is DC to 350 MHz while the
advanced delta-sigma modulator design in the fractional synthesizer allows both ultra-fine step sizes and very low
spurious products. The highly integrated structure provides excellent phase noise performance over temperature,
shock and process. In addition, the HMC778LP6CE offers frequency sweep and modulation features, external
triggering, double-buffering, exact frequency control, phase modulation and more. The HMC778LP6CE is packaged
in a leadless QFN 6 x 6 mm surface mount package.
For theory of operation and register map refer to the “PLLs w/ Integrated VCO - Microwave VCOs” Operating Guide.
To view the Operating Guide, please visit www.hittite.com and choose HMC778LP6CE from the “Search by Part
Number” pull down menu.
RElVeDcDtr,icAaVlDSDp, eVcCiCficPaSt,ioVCnsC,HTFA,
= +25° C; VCCVCO, VDDLS, VPPCPA
VDDPD, DVDD, VDDIO = + 3.3V
=
+5V;
Parameter
Condition
RF Output Characteristics
VCO Output Frequency Range
VCO Output Power [1]
VCO Tuning Voltage
VCO Tuning Sensitivity
Frequency Pulling
VTUNE = 6V
into a 2:1 VSWR
Frequency Pushing
Frequency Drift Rate
VTUNE = 5V
Sub Harmonic (1/2)
Harmonic (2nd)
Harmonic (3rd)
VCO SSB Phase Noise @ 100 kHz Offset (Open
Loop)
VTUNE = +5V
Fvco = 10 GHz
Synthesizer In-Band SSB Phase Noise
@ 10 kHz Offset (Integer / Fractional)
Fref = 50 MHz Fvco = 10.2 GHz
Loop BW = 100 kHz
Synthesizer Noise Floor, Figure Of Merit
(Integer / Fractional)
Synthesizer Fractional Spurs [2]
Synthesizer Frequency Settling Time
(100 MHz Step)
10.2 GHz to 10.3 GHz
Loop BW = 100 kHz, 10°
RF/2 Divider Range
> 4GHz Integer Mode
16 bit, even values only
< 4GHz Integer Mode
16 bit, all values
Min.
9.6
2
32
16
Typ.
10.2
9
165
5
30
1.2
33
25
35
-110
-106/-102
-230 / -227
-65
195
> 4GHz Fractional Mode
< 4GHz Fractional Mode
16 bit
16 bit
40
20
Max.
Units
10.8
13
-45
GHz
dBm
V
MHz/V
MHz pp
MHz/V
MHz/ °C
dBc
dBc
dBc
dBc/Hz
dBc/Hz
dBc/Hz
dBc
μs
131,070
65,535
131,065
65,531
1] See power output vs.tuning voltage graph for power slope.
[2] Actual spur level is dependent on loop parameters and will increase at division ratios closest to integer boundaries.
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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
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Datasheet pdf - http://www.DataSheet4U.net/