Solutions Search - PLL Synthesizers & VCOs
DC1705C-B - LTC6946-2 Demo Board | Ultralow Noise and Spurious 513MHz to 4.91GHz Integer-N Synthesizer with Integrated VCO (Req DC590 or DC2026)
Feb 22nd 2017
DC1705C features the LTC®6946, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. The VCO uses no external components and is internally calibrated without external system support. There are three versions of the DC1705C, one for each version of the LTC6946. The DC1705C-A contains the LTC6946-1, ...
DC2226A-A - 4-Channel 14-bit 250Msps JESD204B ADC with Clocking [Featuring LTC2123, LTC6951]
Dec 8th 2016
Demonstration Circuit 2226A-A is a reference design for a four-channel, 250Msps ADC system consisting of two LTC®2123, dual 14-bit 250Msps ADCs and a JESD204B Subclass 1 clocking solution based on the LTC6951 Clock Synthesizer with Integrated VCO. Other dash options reserved for future use. No external clock source is required ...
DC1959B-A - LTC6948-1 Demo Board | Ultralow Noise and Spurious 373MHz to 3.74GHz Frac-N Synthesizer with Integrated VCO, (Req DC590 or DC2026)
Dec 1st 2016
Demonstration circuit 1959B features the LTC6948, an Ultralow Noise and Spurious Fractional-N Synthesizer with Integrated VCO.
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Uncompromised Clocking Solution for 16-Bit 2.5Gsps High Performance DAC
Sep 6th 2016
Design Note 555: Introduction
The LTC®2000 16-bit 2.5Gsps DAC offers excellent AC performance. For many DAC applications, phase noise, noise spectral density (NSD), and spurious free dynamic range (SFDR) are critical to maximize the number of possible channels in a band without eroding the signal to noise ratio (SNR) in ...
Ultralow Jitter 2MHz to 2700MHz Clock Synthesizer with Distribution Features Multichip Synchronization & JESD204B Clocking
Mar 22nd 2016
MILPITAS, CA - March 22, 2016 - Linear Technology Corporation announces the LTC6951, a low phase noise integer-N synthesizer with an integrated VCO and an ultralow jitter clock distribution section, ideal for clocking data converters. The LTC6951 features four high performance current mode logic (CML) outputs, each equipped ...
DC2248A-B - LTC6951-1 Demo | 5-Output Integer-N PLL with Integrated VCO, Output Range: 2.1MHz to 2.7GHz (requires DC590 or DC2026)
Mar 1st 2016
Demonstration circuit 2248A features the LTC®6951, an Ultralow Jitter Multi-Output Clock Synthesizer with Integrated VCO.
For ease of use, the DC2248A is powered from a single 6V supply and comes installed with a 100MHz reference. Direct access to the LTC6951 5V, 3.3V and the reference supplies is possible by removing jumpers. ...
DC2248A-A - LTC6951 Demo | 5-Output Integer-N PLL with Integrated VCO, Output Range: 1.95MHz to 2.5GHz (requires DC590 or DC2026)
Mar 1st 2016
Demonstration circuit 2248A features the LTC®6951, an Ultralow Jitter Multi-Output Clock Synthesizer with Integrated VCO.
For ease of use, the DC2248A is powered from a single 6V supply and comes installed with a 100MHz reference. Direct access to the LTC6951 5V, 3.3V and the reference supplies is possible by removing jumpers. ...
DC1959B-D - LTC6948-4 Demo Board | Ultralow Noise and Spurious 700MHz to 6.39GHz Frac-N Synthesizer with Integrated VCO, (Req DC590 or DC2026)
Dec 7th 2015
Demonstration circuit 1959B features the LTC6948, an Ultralow Noise and Spurious Fractional-N Synthesizer with Integrated VCO.
...
DC1705C-D - LTC6946-4 Demo Board | Ultralow Noise and Spurious 700MHz to 6.39GHz Integer-N Synthesizer with Integrated VCO (Req DC590 or DC2026)
Mar 30th 2015
DC1705C features the LTC®6946, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. The VCO uses no external components and is internally calibrated without external system support.
...
Phase Noise of Integer-N and Fractional-N PLL Synthesizers
Feb 10th 2015
Phase Noise of Integer-N and Fractional-N PLL Synthesizers
Low phase noise is essential when generating high frequency, high linearity signal sources. Phase noise is a measure of the undesirable change or variation in phase of a signal. It is measured in the frequency domain and equates to jitter in the time domain. When using ...
Five Output Ultralow Jitter Clock Distributor with PLL Provides Unique Multichip Output Synchronization Method
Jan 21st 2015
MILPITAS, CA - January 21, 2015 - Linear Technology Corporation
announces the LTC6950, a low phase noise integer-N synthesizer core
with an ultralow jitter clock distribution output section. The
LTC6950 is ideal for generating and distributing the low jitter
signals essential to clocking data converters with a high
signal-to-noise ...
DC1795A - LTC6950 Demo Board| Integer-N PLL with 5 outputs (requires DC590 or DC2026)
Jan 5th 2015
Demonstration circuit 1795A features the LTC®6950, a 1.4GHz low phase noise, low jitter PLL with clock distribution. For ease of use, the DC1795A comes installed with a 100MHz reference and a 1GHz VCSO, voltage controlled SAW oscillator with sine wave output. All differential inputs and outputs have 0.5" spaced SMA connectors. ...
DC1846A-A - LTC6947 Demo Board | Ultralow Noise and Spurious 350MHz to 6GHz Frac-N Synthesizer, VCO=2328-2536MHz , (Req DC590)
Aug 28th 2014
Demonstration circuit 1846A features the LTC®6947, an Ultralow Noise and Spurious Fractional-N Synthesizer. DC1846A provides 50Ω SMA connectors for the reference frequency (REF+) and the two single-ended RF outputs (RF+ and RF–).
...
DC1705C-A - LTC6946-1 Demo Board| Ultralow Noise and Spurious 373MHz to 3.74GHz Integer-N Synthesizer with Integrated VCO (Req DC590 or DC2026)
Aug 28th 2014
DC1705C features the LTC®6946, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. The VCO uses no external components and is internally calibrated without external system support. There are three versions of the DC1705C, one for each version of the LTC6946. The DC1705C-A contains the LTC6946-1, ...
Low Noise 6GHz Fractional-N Synthesizer with Integrated VCO Matches Integer-N Performance
Jun 25th 2014
MILPITAS, CA - June 25, 2014 - Linear Technology Corporation
introduces the LTC6948, a high performance fractional-N PLL with
6GHz-plus integrated VCO. In the heart of the LTC6948 is an
advanced fourth order delta-sigma modulator that employs
intelligent noise-shaping techniques to minimize noise contribution
without creating ...
AN143 - A Simple Method to Accurately Predict PLL Reference Spur Levels Due to Leakage Current
Jan 3rd 2014
For More Information, Download the Complete Application Note "AN143- A Simple Method to Accurately Predict PLL Reference Spur Levels Due to Leakage Current"
Presented is a simple model that can be used to accurately predict the level of reference spurs due to charge pump and/or op amp leakage current in a PLL system. Knowing ...
Debugging the LTC6946: Getting the PLL to Lock
Mar 21st 2013
The DC1705 and the PLLWizard software provide a complete evaluation system for the LTC6946 that makes it easy to determine how the part will behave in your system. However, a common problem can occur when designing any PLL system - what if the PLL is not locking to the proper frequency? In cases where the LTC6946 RF output ...
DC1649A-A - LTC6945 Demo | Ultralow Noise and Spurious 6GHz Integer-N Synthesizer, VCO=902-928Hz, (Req DC590)
Feb 21st 2012
DC1649A-A - Demo Board for:LTC6945 - Ultralow Noise and Spurious 0.35GHz to 6GHz Integer-N Synthesizer
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Ultralow Noise & Spurious 350MHz to 6GHz Integer-N PLL/Synthesizer Suppresses System Noise
Dec 19th 2011
MILPITAS, CA – December 19, 2011 – Linear Technology
announces the LTC6945, a high performance 6GHz integer-N frequency
synthesizer with outstanding -226dBc/Hz normalized closed-loop
in-band phase noise, excellent -274dBc/Hz normalized in-band 1/f
noise, a wideband phase noise floor of -157dBc/Hz and
best-in-class ...
LTC6945 Wideband Point-to-Point Radio Local Oscillator
Dec 13th 2011
The LTC6945 is a high performance, low noise, 6GHz phase locked loop (PLL), including a reference divider, phase frequency detector (PFD) with phase-lock indicator, charge pump, integer feedback divider and VCO output divider. The part features a buffered, programmable VCO output divider with a range of 1 through 6. The differential, ...
Ultralow Noise & Spurs 373MHz to 5.79GHz Integer-N Synthesizers with Integrated VCO Improve System Performance
Sep 28th 2011
MILPITAS, CA – September 28, 2011 – Linear Technology announces
the LTC6946, the
first device in a family of high performance integer-N frequency
synthesizers with integrated VCO, delivering -226dBc/Hz normalized
closed-loop in-band phase noise, superior -274dBc/Hz normalized
in-band 1/f noise, and best-in-class -103dBc ...
Low Phase Noise Frequency Synthesizers for RF Applications
Sep 19th 2011
In modern RF communication systems, signal integrity is of prime importance. To meet the system requirements, amplifiers, mixers and modulators must have a low noise figure and low distortion products. Additionally, as system designers work to squeeze increasingly more data into the available bandwidth, low phase noise signal ...
DC1705C-C - LTC6946-3 Demo Board | Ultralow Noise and Spurious 640MHz to 5.79GHz Integer-N Synthesizer with Integrated VCO (Req DC590 or DC2026)
Sep 15th 2011
DC1705C features the LTC®6946, an ultralow noise and spurious integer-N frequency synthesizer with integrated VCO. The VCO uses no external components and is internally calibrated without external system support.
...
LTC6946-2 Driving a Passive Downconverting Mixer
Oct 27th 2009
The LTC6946 is a high performance, low noise, 5.7GHz phase-locked loop (PLL) with a fully integrated VCO, including a reference divider, phase-frequency detector (PFD) with phase-lock indicator, ultralow noise charge pump, integer feedback divider, and VCO output divider. The charge pump contains selectable high and low voltage ...
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