HMC698LP5 / 698LP5E
v03.0709
7 GHz INTEGER N SYNTHESIZER
(N = 12 - 259)
Typical Applications
Features
Ultra Low SSB Phase Noise Floor:
-153 dBc/Hz @ 10 kHz offset @ 100 MHz
Reference Frequency.
The HMC698LP5(E) is ideal for:
• Satellite Communication Systems
• Point-to-Point Radios
Programmable Divider (N= 12 - 259) Operating
up to 7 GHz
• Military Applications
• Sonet Clock Generation
Open Collector Output Buffer Amplifiers for
Interfacing w/ Op-Amp Based Loop Filter
Reversible Polarity PFD w/ Lock Detect Output
32 Lead 5x5mm SMT Package: 25mm2
Functional Diagram
General Description
The HMC698LP5(E) is a frequency synthesizer with
a wideband reversible polarity digital PFD and lock
detect output. The divider operates unconditionally
from 80 - 7000 MHz with a continuous integer division
ratio of 12 to 259. The HMC698LP5(E) high frequency
operation along with ultra low phase noise floor make
possible synthesizers with wide loop bandwidth and
low N resulting in fast settling and very low phase
noise. When used in conjunction with a differential
loop filter, the HMC698LP5(E) can be used to phase
lock a VCO to a reference oscillator.
11
Electrical Specifications, TA = +25° C, Vcc = Vcc1 = Vcc2 = Vcc3 = Vcc_pd = 5V
Parameter
Conditions
Min.
Typ.
Max.
Units
MHz
MHz
dBm
MHz
MHz
dBm
Maximum Ref. Input Frequency
Minimum Ref. Input Frequency
Reference Input Power Range
Maximum VCO Input Frequency
Minimum VCO Input Frequency
VCO Input Power Range
Sine or Square Wave Input [1]
Square Wave Input [2]
100 MHz Frequency
1300
10
+5
-5
7000
80
+5
100 MHz Input Frequency
Gain = Vpp / 2π Rad.
-10
PFD Output Voltage
PFD Gain
2000
0.32
mV, Pk - Pk
V/Rad.
@ 10 kHz Offset @ 100 MHz Square Wave Ref. Input
Pin= 0 dBm
SSB Phase Noise
-153
310
dBc/Hz
mA
Total Supply Current
[1] Maximum frequencies may be limited by available counter division ratio.
[2] Square wave input achieves best phase noise at lower ref. frequency (see sine & square wave comparison plots)
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373
Order On-line at www.hittite.com
11 - 12