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For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
Application Support: Phone: 978-250-3343 or apps@hittite.com
HIGH SPEED LOGIC - SMT
3
3 - 1
The HMC720LP3E is a 1:2 Fanout Buffer designed to
support data transmission rates up to 14 Gbps, and
clock frequencies as high as 14 GHz.
All differential inputs to the HMC720LP3E are CML and
terminated on-chip with 50 Ohms to the positive supply,
GND, and may be DC or AC coupled. Outputs can be
connected directly to a 50 Ohm ground-terminated
system or drive devices with CML logic input. The
HMC720LP3E also features an ouput level control pin,
VR, which allows for loss compensation or signal level
optimization. The HMC720LP3E operates from a single
-3.3 V supply and is available in ROHS-compliant 3x3
mm SMT package.
General Description
HMC720LP3E
Features
Functional Diagram
Inputs Terminated Internally in 50 Ohms
Differential Inputs are DC Coupled
Propagation Delay: 120 ps
Fast Rise and Fall Times: 19 / 18 ps
Programmable Differential Output
Voltage Swing: 600 - 1100 mVp-p
Power Dissipation: 300 mW
Single Supply: -3.3 V
16 Lead 3x3 mm SMT Package: 9 mm
Typical Applications
The HMC720LP3E is ideal for:
• 16 G Fiber Channel
• RF ATE Applications
• Broadband Test & Measurement
• Serial Data Transmission up to 14 Gbps
• Clock Buffering up to 14 GHz
Electrical Speci cations, T
A
= +25 ºC, Vee = -3.3 V, VR = 0 V
Parameter Conditions Min. Typ. Max Units
Power Supply Voltage -3.6 -3.3 -3.0 V
Power Supply Current 90 mA
Maximum Data Rate 14 Gbps
Maximum Clock Rate 14 GHz
Input Voltage Range -1.5 0.5 V
Input Differential Range 0.1 2.0 Vp-p
Input Return Loss Frequency <13 GHz 10 dB
Output Amplitude
Single-Ended, peak-to-peak 550 mVp-p
Differential, peak-to-peak 1100 mVp-p
Output High Voltage -10 mV
Output Low Voltage -560 mV
Output Rise / Fall Time Single-Ended, 20% - 80% 19 / 18 ps
14 Gbps, FAST RISE TIME 1:2 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
v01.1010
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
For price, delivery, and to place orders: Analog Devices, Inc.,
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106
Phone: 781-329-4700 • Order online at www.analog.com
Application Support: Phone: 1-800-ANALOG-D
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