LTC6951

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Ultralow Jitter Multi-Output Clock Synthesizer with Integrated VCO

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Part Models
4
1ku List Price
Starting From $10.84
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Part Details

  • Low Noise Integer-N PLL with Integrated VCO
  • Output Jitter:
    • 90fs RMS (12kHz to 20MHz)
    • 115fs RMS (ADC SNR Method)
  • Noise Floor = –165dBc/Hz at 250MHz
  • EZSync™, ParallelSync™ Multichip Synchronization
  • SYSREF Generation for JESD204B/JESD204C, Subclass 1
  • Output Frequency Range:
    • 1.95MHz to 2.5GHz (LTC6951)
    • 2.1MHz to 2.7GHz (LTC6951-1)
  • –229dBc/Hz Normalized In-Band Phase Noise Floor
  • –277dBc/Hz Normalized In-Band 1/f Noise
  • Five Independent, Low Noise Outputs
  • Reference Input Frequency up to 425MHz
  • LTC6951Wizard™ Software Design Tool Support
  • –40°C to 105°C Operating Junction Temperature Range
LTC6951
Ultralow Jitter Multi-Output Clock Synthesizer with Integrated VCO
SNR vs Input Frequency of LTC6951 Clocking an LTC2107, fS = 210Msps, AIN = –3dBFS Product Package 1
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Documentation

Data Sheet 1

User Guide 2

Application Note 2

Technical Articles 1

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Hardware Ecosystem

Parts Product Life Cycle Description
High Speed Comparators (<100ns Propagation Delay) 1
LTC6957
Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
Integer-N PLL 1
ADF4002
RECOMMENDED FOR NEW DESIGNS Phase Detector / PLL Frequency Synthesizer
Standard High Speed A/D Converters 2
LTC2107
PRODUCTION 16-Bit, 210Msps High Performance ADC
LTC2123
PRODUCTION Dual 14-Bit 250Msps ADC with JESD204B Serial Outputs
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Tools & Simulations

Linduino 3

IBIS Model 1

Design Tool 1

Evaluation Kits

eval board
schematic 1
DC2430A

DC2430A Linduino SPI 1:8 Expander Demonstration Board (DC2026 Included)

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Product Details

Demonstration circuit 2430A is a Linduino® SPI 1:8 Expander Shield. The DC2430A shield routes SPI and I2C signals from one DC2026 to one of eight selectable QuikEval™ connector sites. When a DC2430A QuikEval connector site is selected, an LED will illuminate next to the active site. 


 

eval board
schematic 2
schematic 3
schematic 4
schematic 5
schematic 6
DC2248A-A

LTC6951 Demo Board | 5-Output Integer-N PLL with Integrated VCO, Output Range: 1.95MHz to 2.5GHz (requires DC590 or DC2026)

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Product Details

Demonstration circuit 2248A features the LTC6951, 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. For evaluation of the LTC6951 with other references, the DC2248A can be modified to accommodate different onboard or external components.

eval board
schematic 7
schematic 8
schematic 9
schematic 10
schematic 11
DC2248A-B

LTC6951-1 Demo Board | 5-Output Integer-N PLL with Integrated VCO, Output Range: 2.1MHz to 2.7GHz (requires DC590 or DC2026)

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Product Details

Demonstration circuit 2248A features the LTC6951, 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. For evaluation of the LTC6951 with other references, the DC2248A can be modified to accommodate different onboard or external components.

eval board
schematic 12
DC2226A-A

4-Channel 14-Bit 250Msps JESD204B ADC with Clocking [Featuring LTC2123, LTC6951]

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Product Details

Demonstration Circuit 2226A-A is a reference design for a four-channel, 250Msps ADC system consisting of two LTC2123, 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 to operate the board; however, the on-board 100MHz reference oscillator may be bypassed, allowing synchronization to other equipment.


Companion Board: Kintex Board
DC2430A
DC2430A Linduino SPI 1:8 Expander Demonstration Board (DC2026 Included)
DC2430A - Schematic
DC2248A-A
LTC6951 Demo Board | 5-Output Integer-N PLL with Integrated VCO, Output Range: 1.95MHz to 2.5GHz (requires DC590 or DC2026)
DC2248A-A Demo Board DC2248A-A Demo Board DC2248A-A Demo Board DC2248A-A Demo Board DC2248A - Schematic
DC2248A-B
LTC6951-1 Demo Board | 5-Output Integer-N PLL with Integrated VCO, Output Range: 2.1MHz to 2.7GHz (requires DC590 or DC2026)
DC2248A-B Demo Board DC2248A-B Demo Board DC2248A-B Demo Board DC2248A-B Demo Board DC2248A - Schematic
DC2226A-A
4-Channel 14-Bit 250Msps JESD204B ADC with Clocking [Featuring LTC2123, LTC6951]
DC2226A - Schematic

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