Analog Devices PLL with VCO Synthesizer Improves Base Station Performance and Wireless Service Quality
January 25 2016 - 8:00AM
Business Wire
Analog Devices, Inc. today introduced a phased-locked loop (PLL)
synthesizer with integrated voltage-controlled oscillator (VCO)
that allows mobile network operators to improve cellular base
station performance and the quality of wireless service. The new
ADF4355 PLL with VCO synthesizer operates up to 6.8-GHz, a
frequency band that allows significant margin to industry’s current
carrier frequencies. When designed into cellular base stations, the
new PLL synthesizer’s higher frequency and lower VCO phase noise
enables wireless service providers to increase call throughput and
cell phone coverage and service more users per base station at no
significant additional cost. The device’s higher frequency band
offers similar throughput advances for makers of
point-to-point/point-to-multipoint microwave links, satellite/VSAT
systems, industrial and test and measurement systems as well as
other wireless equipment.
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order samples and evaluation boards:
http://www.analog.com/ADF4355
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In frequency generation applications for wireless and industrial
applications, where VCO phase-noise performance plays a pivotal
role in determining the overall system performance of the RF signal
transmission and receive, the choice of PLL synthesizer for the RF
local oscillator (LO) is a key system design consideration. ADI’s
ADF4355 wideband PLLVCO synthesizer meets the exacting VCO phase
noise requirements for frequency generation applications while
delivering a cost-competitive alternative to other PLL devices in a
smallest-in-class 5mm × 5mm LFCSP package. This combination of
features allows designers to reduce risk by ensuring the lowest
possible phase noise, extending frequency coverage, shrinking
footprint and increasing operating range across temperature.
The ADF4355 PLL synthesizer’s integrated VCO has an output
frequency ranging from 3.4 to 6.8 GHz. The VCO frequency is
connected to divide by 1, 2, 4, 8, 16, 32, or 64 circuits, which
allows the designer to generate RF output frequencies as low as 54
MHz, thereby allowing the ADF4355 to cover a continuous range from
54 to 6800MHz with no gaps. For applications that require noise
isolation, the RF output stage features a mute function that is
both pin and software controllable. The ADF4355 can operate in
either fractional-N or integer-N mode and with 38-bit modulus
resolution, offers exact mode frequency operation, independent of
reference input frequency.
Control of all on-chip registers is through a simple 3-wire
interface. The ADF4355 operates with analog and digital power
supplies ranging from 3.15 to 3.45 V, with charge pump and VCO
supplies from 4.75 to 5.25 V. The ADF4355 also contains hardware
and software power-down modes.
ADF4355 Wideband, Ultra-Low-Noise Synthesizer Key
Features
- 54-MHz to 6.8-GHz continuous frequency
range
- Ultra-low VCO phase noise: -144dBc/Hz @
1MHz offset at 1.7GHz (typical)
- High-resolution 38-bit modulus
- Operates from -40C to +85C without
re-programming.
- Dual differential outputs
- Supported by ADIsimPLL circuit design
and virtual evaluation software
- Integrated rms jitter: ~150fs
Pricing and Availability
Product
Sample Availability
Full Production
Price Each per 1,000
Packaging ADF4355
Now Now
$20.44
32-lead
5mm × 5mm LFCSP package
EV-ADF4355SD1Z
Now 1 unit @ $300
EVAL-SDP-CS1Z(Required SDP-SController
Board –Interface to EV-ADF4355SD1Z)
Now
1 unit @ $49
About Analog Devices
Analog Devices (NASDAQ: ADI) designs and manufactures
semiconductor products and solutions. We enable our customers to
interpret the world around us by intelligently bridging the
physical and digital with unmatched technologies that sense,
measure and connect. Visit http://www.analog.com.
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View source
version on businesswire.com: http://www.businesswire.com/news/home/20160125005011/en/
Analog Devices, Inc.Beth Desjardins,
978-614-9599beth.desjardins@analog.comorPorter
NovelliAndrew MacLellan,
617-897-8270andrew.maclellan@porternovelli.com
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