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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 timing­critical 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 LTC6752­2, LTC6752­3 and LTC6752­4 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." The LTC6752 family is offered in the TSOT23, SC70, MSOP8 and a
12­lead 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.

Summary of Features: LTC6752

280MHz Toggle Rate


2.9ns Low Propagation Delay Rail­to­Rail Inputs Extend Beyond Both Rails

CMOS Outputs Capable of Driving

±22mA

4.5mA Low Quiescent Current

Features within the LTC6752 Family:

2.45V to 5.25V Input Supply &

1.71V to 3.5V Output Supply

280MHz, 2.9ns CMOS Output Comparator Family

(Separate Supply Option)

2.45V to 3.5V Supply (Single

Supply Option)


Shutdown Pin for Reduced Power Output Latch & Adjustable Hysteresis

Complementary Outputs

Packages: TSOT­23, MSOP, SC70,

3mm x 3mm QFN

Operating Temperature Range:

­40°C to 125°C

Click Photo for High­Res Image

The USA list pricing shown is for budgetary use only. International prices may differ due to local duties, taxes, fees and exchange rates.

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.

Worldwide Contacts North America and General Information

John Hamburger
Tel: (408) 432­1900 ext. 2419 jhamburger@linear.com
Doug Dickinson
Tel: (408) 432 1900 ext. 2233 ddickinson@linear.com

China (PRC)

Fanny Lau
Tel: 852­2428­0303 flau@linear.com
Angela Ao
Tel: (8610)6522 8081 angela.ao@ebacomms.com

Japan

Yoshikazu Funasaki Tel: 81­3­5226­7291 yfunasaki@linear.com
Takashi Matsuda
Tel: +81­3­3255­8411 linear@chugai­ad.co.jp

Korea

Desiree Park
Tel: +82­2­565­6625 desiree@ezwire.com

Taiwan

Alice Wang
Tel: +886­2­28974705 alice@ezwire.com

Germany

Ralf Stegmann
Tel: +49 (0) 71319234­11 ralf@ezwire.com

UK & Nordic

Alan Timmins
Tel: +44­1252­629937 alan@ezwire.com

Italy

Simona Labianca
Tel: +39 340 0571697 simona@ezwire.com

France

Clotilde Zeller
Tel: +33 1 4614 87 09 clotilde@ezwire.com

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