For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, 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 DIGITAL LOGIC - SMT
1
HMC940LC4B
v02.0614
13 Gbps, 1:4 FANOUT BUFFER
w/ PROGRAMMABLE OUTPUT VOLTAGE
The HMC940LC4B is a 1:4 Fanout Buffer designed to
support data transmission rates up to 13 Gbps, and
clock frequencies as high as 13 GHz. All differential
inputs and outputs are DC coupled and terminated on
chip with 50 Ohm resistors to ground. The outputs may
be used in either single-ended or differential modes,
and should be AC or DC coupled into 50 Ohm resistors
connected to ground.
The HMC940LC4B also features an output level control
pin, VR which allows for loss compensation or for signal
level optimization. The HMC940LC4B operates from a
single -3.3V DC supply and is available in a ceramic
RoHS compliant 4x4 mm SMT package.
General Description
Features
Functional Diagram
Inputs Terminated Internally in 50 Ohms
Differential Inputs are DC Coupled
Propagation Delay: 101 ps
Fast Rise and Fall Times: 26 / 25 ps
Programmable Differential
Output Voltage Swing: 600 - 1400 mV
Power Dissipation: 440 mW
24 Lead Ceramic 4x4 mm SMT Package: 16 mm2
Typical Applications
The HMC940LC4B is ideal for:
• RF ATE Applications
• Broadband Test & Measurement
• Serial Data Transmission up to 13 Gbps
• Clock Buffering up to 13 GHz
Electrical Specications, TA = +25 ºC Vee = -3.3V, VR = 0V
Parameter Conditions Min. Typ. Max Units
Power Supply Voltage (Vee) -3.6 -3.3 -3.0 V
Power Supply Current 133 mA
Maximum Data Rate 13 Gbps
Maximum Clock Rate 13 GHz
Input High Voltage -0.5 0.5 V
Input Low Voltage -1.0 0.0 V
Input Return Loss Frequency <15 GHz 10 dB
Output Amplitude Single-Ended, peak-to-peak 585 mVp-p
Differential, peak-to-peak 1170 mVp-p
Output High Voltage -15 mV
Output Low Voltage -600 mV
Output Rise / Fall Time Single-Ended, 20% - 80% 26 / 25 ps
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