LTC6957

LAST TIME BUY

Low Phase Noise, Dual Output Buffer/Driver/Logic Converter

Data Sheet Product Selection Table
Part Models
22
1ku List Price
Starting From $4.50
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Part Details

  • Low Phase Noise Buffer/Driver
  • Optimized Conversion of Sine Wave Signals to Logic Levels
  • Three Logic Output Types Available
    • LVPECL
    • LVDS
    • CMOS
  • Additive Jitter 45fsRMS (LTC6957-1)
  • Frequency Range Up to 300MHz
  • 3.15V to 3.45V Supply Operation
  • Low Skew 3ps Typical
  • Fully Specified from –40°C to 125°C
  • 12-Lead MSOP and 3mm × 3mm DFN Packages
LTC6957
Low Phase Noise, Dual Output Buffer/Driver/Logic Converter
Additive Phase Noise at 100MHz Product Package 1 Product Package 2 Product Package 3 Product Package 4
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 2

Design Note 1

Technical Articles 3

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
Clock Generation Devices 1
LTC6950
Obsolete 1.4GHz Low Phase Noise, Low Jitter PLL with Clock Distribution
Fractional-N PLL 1
LTC6948
LAST TIME BUY Ultralow Noise 0.37GHz to 6.39GHz Fractional-N Synthesizer with Integrated VCO
Integer-N PLL 1
LTC6946
LAST TIME BUY Ultralow Noise and Spurious 0.37GHz to 6.39GHz Integer-N Synthesizer with Integrated VCO
Standard High Speed A/D Converters 1
LTC2157-14
PRODUCTION Dual 14-Bit 250Msps ADCs
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Tools & Simulations

IBIS Model 3

Evaluation Kits

eval board
schematic 1
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DC1765A-B

LTC6957HMS-2 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVDS Outputs

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Product Details

DC1765A-B: Demo Board for the LTC6957 Low Phase Noise, Dual Output Buffer/Driver/Logic Converter.

eval board
schematic 6
schematic 7
schematic 8
schematic 9
schematic 10
DC1766A-B

LTC6957HMS-4 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with Complementary CMOS Outputs

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Product Details

DC1766A-B: Demo Board for the LTC6957 Low Phase Noise, Dual Output Buffer/Driver/Logic Converter.

eval board
schematic 11
schematic 12
schematic 13
schematic 14
schematic 15
DC1765A-A

LTC6957HMS-1 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVPECL Outputs

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Product Details

DC1765A-A: Demo Board for the LTC6957 Low Phase Noise, Dual Output Buffer/Driver/Logic Converter.

eval board
schematic 16
schematic 17
schematic 18
schematic 19
schematic 20
DC1766A-A

LTC6957HMS-3 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with In-Phase CMOS Outputs

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Product Details

DC1766A-A: Demo Board for the LTC6957 Low Phase Noise, Dual Output Buffer/Driver/Logic Converter.

eval board
schematic 21
schematic 22
schematic 23
AD-SYNCHRONA14-EBZ

Multichannel System Clocking Device

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Features and Benefits

Processing System

  • Raspberry Pi 4, ARM Cortex-A72, 2GB SDRAM

User Interfaces

  • Gigabit Ethernet
  • 2 × USB 3.0 ports
  • 2 × USB 2.0 ports
  • SPI interface
  • GPIO
  • 2 bicolor LEDs
  • Male pin header

Clock Processing Devices

  • HMC7044 (High Performance, 3.2 GHz, 14-Output Jitter Attenuator)
  • AD9545 (1 PPS Synchronizer and Adaptive Clock Translator)

Clock Outputs

  • 4 x TWINAX LVPECL AC&DC coupled, 100Ω diff
  • 2 x SMA LVPECL AC coupled*
  • 4 x SMA CMOS*
  • 4 x SMA LVDS AC coupled*

*Configurable differential outputs, 50Ω diff

Clock Inputs

  • 3 differential 100Ω SMA clock inputs
  • PPS input
  • SYNC input
  • 10MHz input

Internal references

  • 100Mhz and 122.88Mhz Ultra-Low Phase Noise VCXO's (-165dBc/Hz)
  • 40Mhz and 38.4Mhz TCXO's (±1ppm) 50MHz OCXO(+/- 10ppb)
  • Internal references are software configurable

Power supply

  • DC 12V, 3A barrel jack

Product Details

The AD-SYNCHRONA14-EBZ is an ideal self-contained device to use in evaluation and prototyping of applications that need a highly accurate frequency and phase-controlled source clock. It is designed around the Analog Devices AD9545 and HMC7044 and greatly simplifies clock distribution and multi-channel synchronization in complex systems. It is intended to be used by trained professionals in a laboratory environment, and not intended as an end product for commercial use. It can be taken as a complete reference design and customised as required for any end customer applications. Full design details are made available free of charge.

The AD-SYNCHRONA14-EBZ comes in a 1U mechanical form factor. Using popular industry connector SMA and TwinAX interfaces most labs will already have the needed cables.

With its internal OCXO it can operate in standalone mode or be fed from a choice of external sources, such as 3 separate high speed differential clock inputs, a 10MHz reference and 1PPS. This flexibility combined with the capability to select either of the internal VCXO options of 100MHz or 122.88MHz, gives almost unlimited choice for the frequency of interest and accuracy needed for a wide variety of application areas. 

APPLICATIONS

  • High accuracy reference clock distribution
  • Systems clocked from a single source
  • Clocks derived from 100MHz or 122.88MHz
  • Phased Array Systems, RADAR, EW, SATCOMS, SDR
  • Bench Equipment
  • Remote controlled operation
DC1765A-B
LTC6957HMS-2 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVDS Outputs
DC1765A-B Demo Board DC1765A-B Demo Board DC1765A-B Demo Board DC1765A-B Demo Board DC1765A-A - Schematic
DC1766A-B
LTC6957HMS-4 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with Complementary CMOS Outputs
DC1766A-B Demo Board DC1766A-B Demo Board DC1766A-B Demo Board DC1766A-B Demo Board DC1766A-A - Schematic
DC1765A-A
LTC6957HMS-1 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with LVPECL Outputs
DC1765A-A Demo Board DC1765A-A Demo Board DC1765A-A Demo Board DC1765A-A Demo Board DC1765A-A - Schematic
DC1766A-A
LTC6957HMS-3 Demo Board | Low Phase Noise, Dual Output Buffer/Driver/Logic Converter with In-Phase CMOS Outputs
DC1766A-A Demo Board DC1766A-A Demo Board DC1766A-A Demo Board DC1766A-A Demo Board DC1766A-A - Schematic
AD-SYNCHRONA14-EBZ
Multichannel System Clocking Device
AD-SYNCHRONA14-EBZ Evaluation Board - Front View AD-SYNCHRONA14-EBZ Evaluation Board Evaluation Board - Back View AD-SYNCHRONA14-EBZ Evaluation Board

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