LTC6954
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LTC6954

Low Phase Noise, Triple Output Clock Distribution Divider/Driver

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Part Details
Part Models 7
1ku List Price Starting From $9.30
Features
  • Low Noise Clock Distribution: Suitable for High Speed/High Resolution ADC Clocking
  • Additive Jitter < 20fsRMS (12kHz to 20MHz)
  • Additive Jitter < 85fsRMS (10Hz to Nyquist)
  • 1.8GHz Maximum Input Frequency (LTC6954-1 When DELAY = 0)
  • 1.4GHz Maximum Input Frequency (LTC6954-1 When DELAY > 0, LTC6954-2, -3, -4)
  • EZSync Clock Synchronization Compatible
  • Three Independent, Low Noise Outputs
  • Four Output Combinations Available
  • Three Independent Programmable Dividers Covering All Integers From 1 to 63
  • Three Independent Programmable Delays Covering All Integers From 0 to 63
  • –40°C to 105°C Junction Temperature Range
Additional Details
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The LTC6954 is a family of very low phase noise clock distribution parts. Each part has three outputs and each output has an individually programmable frequency divider and delay. There are four members of the family, differing in their output logic signal type:

LTC6954-1: Three LVPECL outputs

LTC6954-2: Two LVPECL and one LVDS/CMOS outputs

LTC6954-3: One LVPECL and two LVDS/CMOS outputs

LTC6954-4: Three LVDS/CMOS outputs

Each output is individually programmable to divide the input frequency by any integer from 1 to 63, and to delay each output by 0 to 63 input clock cycles. The output duty cycle is always 50%, regardless of the divide number. The LVDS/CMOS outputs are jumper selectable via the OUTxSEL pins to provide either an LVDS logic output or a CMOS logic output.

The LTC6954 also features Linear Technology’s EZSync system for perfect clock synchronization and alignment every time.

All device settings are controlled through an SPI-compatible serial port.

Applications

  • Clocking High Speed, High Resolution ADCs, DACs and Data Acquisition Systems
  • Low Jitter Clock Distribution
Part Models 7
1ku List Price Starting From $9.30

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC6954IUFF-1#PBF
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LTC6954IUFF-1#TRPBF
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LTC6954IUFF-2#TRPBF
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LTC6954IUFF-3#PBF
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LTC6954IUFF-3#TRPBF
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LTC6954IUFF-4#PBF
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LTC6954IUFF-4#TRPBF
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Product Lifecycle

PCN

Jun 10, 2019

- 19_0133

LTC6954 Datasheet Change

LTC6954IUFF-1#PBF

LTC6954IUFF-1#TRPBF

LTC6954IUFF-2#TRPBF

LTC6954IUFF-3#PBF

LTC6954IUFF-3#TRPBF

LTC6954IUFF-4#PBF

LTC6954IUFF-4#TRPBF

Mar 20, 2024

- 23_0089

Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process

LTC6954IUFF-1#PBF

LTC6954IUFF-1#TRPBF

LTC6954IUFF-2#TRPBF

LTC6954IUFF-3#PBF

LTC6954IUFF-3#TRPBF

LTC6954IUFF-4#PBF

LTC6954IUFF-4#TRPBF

Filter by Model

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Product Lifecycle

PCN

Jun 10, 2019

- 19_0133

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LTC6954 Datasheet Change

LTC6954IUFF-1#PBF

LTC6954IUFF-1#TRPBF

LTC6954IUFF-2#TRPBF

LTC6954IUFF-3#PBF

LTC6954IUFF-3#TRPBF

LTC6954IUFF-4#PBF

LTC6954IUFF-4#TRPBF

Mar 20, 2024

- 23_0089

arrow down

Obsolescence of Tower Fab3 (JAZZ-3) SBC35 Process

LTC6954IUFF-1#PBF

LTC6954IUFF-1#TRPBF

LTC6954IUFF-2#TRPBF

LTC6954IUFF-3#PBF

LTC6954IUFF-3#TRPBF

LTC6954IUFF-4#PBF

LTC6954IUFF-4#TRPBF

Software & Part Ecosystem

Software & Part Ecosystem

 

LTC6954 GUI

Info:False

LTC6954_GUI is used to communicate with the LTC6954 clock driver. It uses the DC590 to translate between USB and SPI-compatible serial communications formats.

Evaluation Kit

Evaluation Kits 4

reference details image

DC1954A-A

LTC6954-1 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVPECL Outputs (Requires DC590 or DC2026)

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DC1954A-A

LTC6954-1 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVPECL Outputs (Requires DC590 or DC2026)

LTC6954-1 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVPECL Outputs (Requires DC590 or DC2026)

Product Detail

Demonstration Circuit 1954A features the LTC6954, a Low Phase Noise, Triple Output Clock Distribution Divider/ Driver.


There are four options of the DC1954A, one for each version of the LTC6954. Table 1 summarizes the available DC1954A options.

reference details image

DC1954A-C

LTC6954-3 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 1 LVPECL and 2 LVDS/CMOS outputs (Requires DC590 or DC2026)

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DC1954A-C

LTC6954-3 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 1 LVPECL and 2 LVDS/CMOS outputs (Requires DC590 or DC2026)

LTC6954-3 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 1 LVPECL and 2 LVDS/CMOS outputs (Requires DC590 or DC2026)

Product Detail

Demonstration Circuit 1954A features the LTC6954, a Low Phase Noise, Triple Output Clock Distribution Divider/ Driver.


There are four options of the DC1954A, one for each version of the LTC6954. Table 1 summarizes the available DC1954A options.

reference details image

DC1954A-D

LTC6954-4 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVDS/CMOS outputs (Requires DC590 or DC2026)

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DC1954A-D

LTC6954-4 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVDS/CMOS outputs (Requires DC590 or DC2026)

LTC6954-4 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 3 LVDS/CMOS outputs (Requires DC590 or DC2026)

Product Detail

Demonstration Circuit 1954A features the LTC6954, a Low Phase Noise, Triple Output Clock Distribution Divider/ Driver.


There are four options of the DC1954A, one for each version of the LTC6954. Table 1 summarizes the available DC1954A options.

reference details image

DC1954A-B

LTC6954-2 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 2 LVPECL and 1 LVDS/CMOS outputs (Requires DC590 or DC2026)

zoom

DC1954A-B

LTC6954-2 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 2 LVPECL and 1 LVDS/CMOS outputs (Requires DC590 or DC2026)

LTC6954-2 Demo Board | Low Phase Noise, Triple Output Clock Distribution Divider/Driver, 2 LVPECL and 1 LVDS/CMOS outputs (Requires DC590 or DC2026)

Product Detail

Demonstration Circuit 1954A features the LTC6954, a Low Phase Noise, Triple Output Clock Distribution Divider/ Driver.


There are four options of the DC1954A, one for each version of the LTC6954. Table 1 summarizes the available DC1954A options.

Tools & Simulations

Tools & Simulations 2

Linduino

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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