Low-Jitter 1.25-GSPS Clock Optimizes JESD204B Serial Interface Functionality in GSPS Data Converter Applications
02 Dicembre 2014 - 2:00PM
Business Wire
New clock IC enables the unique functionality
of the JESD204B SERDES high-speed interface
Analog Devices, Inc. (NASDAQ: ADI) introduced today the AD9528
JESD204B clock and SYSREF generator defined to support the clock
requirements for long-term evolution (LTE) and multicarrier GSM
base station designs, defense electronics systems, RF test
instrumentation, and other emerging wideband RF GSPS data
acquisition signal chains. The use of the JESD204B standard for the
high-speed converter-to-digital processor interface is becoming
increasingly prevalent across many state-of-the-art applications as
data rates are being pushed into the multi-Gb/s range, and
multi-channel synchronization and data latency management are
becoming a system necessity. The JESD204B interface was
specifically developed to address high-data rate system design
needs, and the AD9528 clock device contains functions that support
and enhance the unique capabilities of that interface standard.
The AD9528 provides a low-power, multi-output, clock
distribution function with low-jitter performance, along with an
on-chip, two-stage PLL and VCO. The on-chip VCO tunes from 3.6 GHz
to 4.0 GHz, with the input receivers and oscillator providing both
single-ended and differential operation.
- Download AD9528 data sheet, order
samples and evaluation boards: http://www.analog.com/AD9528
- Connect with engineers and ADI product
experts on EngineerZone™, an online technical support community:
http://ez.analog.com/
- Find application notes and technical
articles about wireless and communications solutions from ADI:
http://communications.analog.com/en/segment/cmmn.html
- Explore ADI’s Wideband RF Signal
Processing website: http://www.analog.com/widebandRF
- Visit ADI’s JESD204B interface design
resource page: http://www.analog.com/JESD204B
The AD9528 provides JESD204B-compatible subclass 1 SYSREF and
deterministic latency clocking signals and supports a variety of
options for SYSREF signal generation. The most basic is a
simple buffer function wherein the user-provided SYSREF signal is
fanned out to the SYSREF output pins. When provided with an
external SYSREF source, the AD9528 is also capable of synchronizing
the SYSREF outputs to the clock outputs being generated internally,
which is necessary to achieve accurate deterministic latency. The
AD9528 is also capable of generating the SYSREF source internally.
The AD9528 supports both continuous signal SYSREF generation and
“n-shot” pulse generation. N-shot generation is vital in
systems where a continuous signal might result in unwanted spurs in
the output spectrum of the data converter being clocked.
When connected to a recovered system reference clock and a VCXO,
the AD9528 generates 12 low-noise outputs with a range of 1 MHz to
400 MHz, and two high-speed outputs at up to 1.25 GHz. The
frequency and phase of one clock output relative to another clock
output can be varied by means of a divider phase-select function
that serves as a jitter-free, coarse timing adjustment in
increments that are equal to half the period of the signal coming
from the VCO output. The SYSREF signals each have additional phase
offset capability making it easy to dial-in the optimal arrival
time at each target device.
Pricing and Availability
Product Sample Availability
Full Production
Price Each Per 1K Packaging
AD9528BCPZ NOW NOW
$8.25 72-lead LFCSP AD9528/PCBZ
Evaluation Board
NOW NOW
$190.00 n/a
The AD9528 can be designed into wideband RF data acquisition
applications with ADI’s AD9680 dual-channel, 14-bit, 1.0-GSPS
JESD204B A/D converter.
About Analog Devices
Innovation, performance, and excellence are the cultural pillars
on which Analog Devices has built one of the longest standing,
highest growth companies within the technology sector. Acknowledged
industry-wide as the world leader in data conversion and signal
conditioning technology, Analog Devices serves over 100,000
customers, representing virtually all types of electronic
equipment. Analog Devices is headquartered in Norwood,
Massachusetts, with design and manufacturing facilities throughout
the world. Analog Devices is included in the S&P 500 Index.
EngineerZone is a trademarked term of Analog Devices, Inc.
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EDITORS ONLY CONTACT:Analog Devices Inc.Linda
Kincaid,
781-937-1472linda.kincaid@analog.comorPorter
NovelliAndrew MacLellan,
617-897-8270andrew.maclellan@porternovelli.com
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