Industry's Fastest Comparators Drive 1.8V Logic Beyond 280MHz

News Release  www.linear.com
Industry’s Fastest Comparators Drive 1.8V Logic Beyond 280MHz
MILPITAS, CA – March 11, 2015 – Linear Technology Corporation announces the LTC6752 family
of comparators with fast rise and fall times of 1.2ns and a toggle frequency of 280MHz, making them
the fastest CMOS output comparators available today. Designed for driving logic levels from 3.3V
down to 1.8V, the LTC6752 exhibits only 2.9ns of propagation delay and overdrive dispersion of only
1.8ns. Jitter is only 4.5ps for a 100mVpp, 100MHz sinusoidal input, and the outputs swing to within
200mV of the rails with up to 8mA of load current. All of this high speed performance is well suited
for a broad range of timing-critical applications, where fast response times and CMOS output levels
are required.
The LTC6752 consists of 5 options offered in different packages with unique combinations
of features, such as separate input and output supplies, low power shutdown, output latch, adjustable
hysteresis and complementary outputs. The latch provides the ability to quickly capture the state of
the comparator. With the adjustable hysteresis feature, the default 5mV hysteresis can be increased up
to 40mV for clean switching in the presence of noisy input signals, and it allows for hysteresis to be
completely eliminated. The separate input and output supply allows the output logic level to be
independent of the input signal range for translation from one logic level to another. With the
shutdown, power can be reduced while enabling the comparator to wake up quickly. In addition, the
complementary CMOS outputs simplify logic interfaces and eliminate the need for separate logic
inversion.
The inputs for the LTC6752 extend beyond both rails, particularly useful for single supply
operation. All members of the LTC6752 family are capable of driving 3.3V and 2.5V logic. The
LTC6752-2, LTC6752-3 and LTC6752-4 have separate input and output supplies, decoupling the
input and output voltage levels and enabling them to drive 1.8V logic.
“The LTC6752 family greatly expands the capabilities of CMOS output comparators with
unprecedented speed and performance” stated Brian Hamilton, Design Manager for Linear
Technology. “Each option combines a unique set of features to address a wide range of applications.”
Industry’s Fastest Comparators Drive 1.8V Logic Beyond 280MHz
page 2
The LTC6752 family is offered in the TSOT23, SC70, MSOP8 and a 12-lead 3mm x 3mm QFN
package. These parts are fully specified over two temperature ranges: –40°C to 85°C and –40°C to
125°C. All members of the LTC6752 family are in full production, with prices starting at $1.62 each
in 1,000 piece quantities. For more information, visit www.linear.com/product/LTC6752
Photo Caption: 280MHz, 2.9ns CMOS Output Comparator Family
Summary of Features: LTC6752

280MHz Toggle Rate

2.9ns Low Propagation Delay
Rail-to-Rail Inputs Extend Beyond Both Rails


CMOS Outputs Capable of Driving ±22mA




4.5mA Low Quiescent Current
Features within the LTC6752 Family:
o 2.45V to 5.25V Input Supply & 1.71V to 3.5V Output Supply (Separate Supply Option)
o 2.45V to 3.5V Supply (Single Supply Option)
o Shutdown Pin for Reduced Power
o Output Latch & Adjustable Hysteresis
o Complementary Outputs
Packages: TSOT-23, MSOP, SC70, 3mm × 3mm QFN
Operating Temperature Range: –40°C to 125°C
PART#
ADJ.
HYST
INPUT &
OUTPUT
SUPPLIES
SHUTDOWN
Q/Q
OUTPUTS
LATCH
LTC6752
LTC6752-1
•
LTC6752-2
•
•
•
LTC6752-3
•
•
•
LTC6752-4
•
•
Output CMOS
Logic Levels
3.3V
2.5V
1.8V
PACKAGE
•
•
TSOT-23-5
•
•
•
SC70-6
•
•
•
•
MSOP8
•
•
•
•
3×3 QFN12
•
•
•
SC70-6
The USA list pricing shown is for budgetary use only. International prices may differ due to local
duties, taxes, fees and exchange rates.
Industry’s Fastest Comparators Drive 1.8V Logic Beyond 280MHz
page 3
About Linear Technology Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing and marketing a broad line of high performance analog integrated circuits for major companies worldwide for over three decades. The Company’s products provide an essential bridge between our analog world and the digital electronics in communications, networking, industrial, automotive, computer, medical, instrumentation, consumer, and military and aerospace systems. Linear Technology produces power management, data conversion, signal conditioning, RF and interface ICs, µModule® subsystems, and wireless sensor network products. For more information, visit www.linear.com
, LT, LTC, LTM, Linear Technology, the Linear logo and µModule are registered trademarks of Linear
Technology Corp. All other trademarks are the property of their respective owners.
Press Contacts:
North America / Worldwide
UK & Nordic
John Hamburger, Director Marketing
Communications
[email protected]
Tel: 408-432-1900 ext 2419
Alan Timmins
[email protected]
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
[email protected]
Tel: 408-432-1900 ext 2233