LTC6754
High Speed Rail-to-Rail Input Comparator with LVDS Compatible Outputs
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Features
- Low Propagation Delay: 1.8ns Typ.
- Low Overdrive Dispersion: 1ns Typ. (10mV to 125mV Overdrive)
- High Toggle Rate: 890Mbps Typ.
- LVDS Compatible Output Stage
- Rail-to-Rail Inputs Extend Beyond Both Rails
- Low Quiescent Current: 13.4mA
- Supply Range: 2.4V to 5.25V
- Features within the LTC6754 Family:
- Separate Input and Output Supplies
- Shutdown Pin for Reduced Power
- Output Latch and Adjustable Hysteresis
- SC70 and 3mm × 3mm QFN Packages
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The LTC6754 is a high speed rail-to-rail comparator with LVDS compatible outputs. The LTC6754 exhibits 1.8ns of propagation delay, only 1ns of dispersion (10mV to 125mV overdrive) and a toggle rate up to 890Mbps.
The LTC6754 has rail-to-rail inputs, and will operate from a 2.4V to 5.25V supply. For the QFN package, the LVDS output is operated with a separate supply, providing isolation between input and output circuitry, and allowing for logic level translation.
In shutdown mode, power is reduced from 13.4mA to under 1.1mA, and the comparator can wake up in 120ns.
The LTC6754 includes 4.5mV of hysteresis to minimize instability. For the QFN package, a separate pin is available to set the hysteresis from 0mV (off) up to 40mV. The QFN version also features output latching to provide the ability to quickly capture the state of the comparator.
The dispersion of only 1ns combined with excellent propagation delay of 1.8ns makes the device an excellent choice for timing critical applications. Similarly, the 890Mbps toggle rate and low jitter of 1.5psRMS (200mVP–P, 245.76MHz input) make the LTC6754 ideally suited for high frequency line driver and clock recovery circuits.
Applications
- Clock and Data Recovery
- Level Translation
- High Speed Data Acquisition Systems
- Window Comparators
- High Speed Line Receivers
- Time Domain Reflectometry
- Time of Flight Measurements
- Cable Drivers
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LTC6754
Documentation
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Data Sheet 1
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Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC6754HSC6#TRMPBF |
6-Lead SC70
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| LTC6754HSC6#TRPBF |
6-Lead SC70
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| LTC6754HUD#PBF |
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
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| LTC6754HUD#TRPBF |
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
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| LTC6754ISC6#TRMPBF |
6-Lead SC70
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| LTC6754ISC6#TRPBF |
6-Lead SC70
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| LTC6754IUD#PBF |
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
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| LTC6754IUD#TRPBF |
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
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- LTC6754HSC6#TRMPBF
- Pin/Package Drawing
-
6-Lead SC70
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754HSC6#TRPBF
- Pin/Package Drawing
-
6-Lead SC70
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754HUD#PBF
- Pin/Package Drawing
-
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754HUD#TRPBF
- Pin/Package Drawing
-
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754ISC6#TRMPBF
- Pin/Package Drawing
-
6-Lead SC70
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754ISC6#TRPBF
- Pin/Package Drawing
-
6-Lead SC70
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754IUD#PBF
- Pin/Package Drawing
-
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- LTC6754IUD#TRPBF
- Pin/Package Drawing
-
12-Lead QFN (3mm x 3mm x 0.75mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Software & Part Ecosystem
Evaluation Kits 1
DC2767A
Demo Board for LTC6754 High Speed Comparator with LVDS
Product Detail
Demonstration circuit 2767A features the LTC6754 highspeed rail-to-rail comparator in a QFN package with LVDS compatible outputs. The DC2767 input is AC-coupled for single-ended signal greater than 5MHz and up to 445MHz. The DC2767 outputs are AC-coupled 50Ω source impedance for driving directly the 50Ω inputs of a 1GHz or higher oscilloscope. The DC2767 has a supply connection for the LTC6754 rail-to-rail inputs and a separate supply connection for the QFN LTC6754 LVDS outputs.
The LTC6754 includes 4.5mV of hysteresis to minimize instability. For the QFN package, a separate pin is available to set the hysteresis from 0mV (off) up to 40mV. The QFN version also features output latching to provide the ability to capture the state of the comparator. The DC2767 provides a connection to set the hysteresis or for output latching.
LTC6754 is ideally suited for high frequency line driver and clock recovery circuits.
Resources
Evaluation Kits1
Tools & Simulations 1
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.
Lt Spice