LTC6752-4_15 Datasheet, PDF (1/30 Pages) Linear Technology – 280MHz, 2.9ns Comparator Family with Rail-to-Rail Inputs and CMOS Outputs

LTC6752/LTC6752-1/
LTC6752-2/LTC6752-3/LTC6752-4
Features
280MHz, 2.9ns Comparator
Family with Rail-to-Rail Inputs
and CMOS Outputs
Description
nn _{Very High Toggle Rate: 280MHz}
nn _{Low Propagation Delay: 2.9ns}
nn _{Rail-to-Rail Inputs Extend Beyond Both Rails}
nn _{Output Current Capability: ±22mA}
nn _{Low Quiescent Current: 4.5mA}
nn _{Features within the LTC6752 Family:}
nn _{2.45V to 5.25V Input Supply and 1.71V to 3.5V}
Output Supply (Separate Supply Option)
nn _{2.45V to 3.5V Supply (Single Supply Option)}
nn _{Shutdown Pin for Reduced Power}
nn _{Output Latch and Adjustable Hysteresis}
nn _{Complementary Outputs}
nn _{Packages: TSOT-23, SC70, MSOP, 3mm × 3mm QFN}
nn _{Direct Replacement for ADCMP60X Family}
nn _{Operating Temperature Range: –40°C to 125°C}
Applications
nn _{Clock and Data Recovery}
nn _{Level Shifting}
nn _{High Speed Data Acquisition Systems}
nn _{Window Comparators}
nn _{High Speed Line Receivers}
nn _{Fast Crystal Oscillators}
nn _{Time of Flight Measurements}
nn _{Time Domain Reflectometry}
The LTC^®6752 is a family of very high speed comparators
capable of supporting toggle rates up to 280MHz. These
comparators exhibit low propagation delays of 2.9ns, and
fast rise/fall times of 1.2ns. There are a total of 5 members
in the LTC6752 family, with different options for separate
input and output supplies, shutdown, output latch, adjust-
able hysteresis, complementary outputs, and package.
The LTC6752 comparators have rail-to-rail inputs that
operate from 2.45V, up to 3.5V or 5.25V, depending on
the option. The outputs are CMOS and the separate supply
options can operate down to 1.71V, allowing for directly
interfacing to 1.8V logic devices.
The low propagation delay of only 2.9ns combined with
low dispersion of only 1.8ns (10mV to 125mV overdrive
variation) makes these comparators an excellent choice
for critical timing applications. Similarly, the fast toggle
rate and the low jitter of 4.5ps RMS (100mV_P-P, 100MHz
input) make the LTC6752 family ideally suited for high
frequency line driver and clock recovery circuits.
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 with Excellent
Common Mode Rejection
SMALL DIFFERENTIAL SIGNAL WITH
LARGE COMMON MODE COMPONENT
V_CC = 5V
+IN ₊
V_DD = 2.7V
LTC6752-2
Q
–IN _–
V_EE
6752 T01a
500mV/DIV
For more information www.linear.com/LTC6752
Q
–IN +IN
50ns/DIV
6752 T01a
6752fb
1