Datasheet LTC6754 (Analog Devices)

LTC6754 High Speed Rail-to-Rail Input Comparator with LVDS Compatible Outputs
FeaTures DescripTion
n
Low Propagation Delay: 1.8ns Typ.
The LTC®6754 is a high speed rail-to-rail comparator with n
Low Overdrive Dispersion: 1ns Typ.
LVDS compatible outputs. The LTC6754 exhibits 1.8ns of
(10mV to 125mV Overdrive)
propagation delay, only 1ns of dispersion (10mV to 125mV n
High Toggle Rate: 890Mbps Typ.
overdrive) and a toggle rate up to 890Mbps. n
LVDS Compatible Output Stage
The LTC6754 has rail-to-rail inputs, and will operate from n Rail-to-Rail Inputs Extend Beyond Both Rails a 2.4V to 5.25V supply. For the QFN package, the LVDS n Low Quiescent Current: 13.4mA output is operated with a separate supply, providing isola- n Supply Range: 2.4V to 5.25V tion between input and output circuitry, and allowing for n Features within the LTC6754 Family: logic level translation. n Separate Input and Output Supplies In shutdown mode, power is reduced from 13.4mA to n Shutdown Pin for Reduced Power under 1.1mA, and the comparator can wake up in 120ns. n Output Latch and Adjustable Hysteresis n SC70 and 3mm × 3mm QFN Packages The LTC6754 includes 4.5mV of hysteresis to minimize instability. For the QFN package, a separate pin is available
applicaTions
to set the hysteresis from 0mV (off) up to 40mV. The QFN version also features output latching to provide the ability n Clock and Data Recovery to quickly capture the state of the comparator. n Level Translation n The dispersion of only 1ns combined with excellent High Speed Data Acquisition Systems n propagation delay of 1.8ns makes the device an excel- Window Comparators lent choice for timing critical applications. Similarly, the n High Speed Line Receivers 890Mbps toggle rate and low jitter of 1.5ps n RMS (200mVP–P, Time Domain Reflectometry 245.76MHz input) make the LTC6754 ideally suited for n Time of Flight Measurements high frequency line driver and clock recovery circuits. n Cable Drivers L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion High Speed Differential Line Receiver and LVDS Translator with Excellent Common Mode Rejection
Q – Q +IN–IN SMALL DIFFERENTIAL SIGNAL WITH LARGE COMMON MODE COMPONENT VCCI Q – Q +IN, –IN 100mV/DIV 200mV/DIV VCCO +IN + Q 0mV 700mV LTC6754 100Ω –IN – Q VEE 6754 T01a 6754 F16 20ns/DIV 6754f For more information www.linear.com/LTC6754 1 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts