ADL5391 Datasheet PDF - Analog Devices
|DC to 2.0 GHz Multiplier
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Ultrafast symmetric multiplier
Function: VW = α × (VX × VY)/1 V + VZ
Unique design ensures absolute XY-symmetry
Identical X and Y amplitude/timing responses
Adjustable gain scaling, α
DC-coupled throughout, 3 dB bandwidth of 2 GHz
Fully differential inputs, may be used single ended
Low noise, high linearity
Accurate, temperature stable gain scaling
Single-supply operation (4.5 V to 5.5 V @ 130 mA)
Low current power-down mode
Wideband multiplication and summing
High frequency analog modulation
Adaptive antennas (diversity/phased array)
Square-law detectors and true rms detectors
Accurate polynomial function synthesis
DC capable VGA with very fast control
The ADL5391 draws on three decades of experience in
advanced analog multiplier products. It provides the same
general mathematical function that has been field proven to
provide an exceptional degree of versatility in function synthesis.
VW = α × (VX × VY)/ 1 V + VZ
The most significant advance in the ADL5391 is the use of a
new multiplier core architecture, which differs markedly from
the conventional form that has been in use since 1970. The
conventional structure that employs a current mode, translinear
core is fundamentally asymmetric with respect to the X and Y
inputs, leading to relative amplitude and timing misalignments
that are problematic at high frequencies. The new multiplier
core eliminates these misalignments by offering symmetric
signal paths for both X and Y inputs. The Z input allows a signal
to be added directly to the output. This can be used to cancel a
carrier or to apply a static offset voltage.
The fully differential X, Y, and Z input interfaces are operational
over a ±2 V range, and they can be used in single-ended fashion.
The user can apply a common mode at these inputs to vary
from the internally set VPOS/2 down to ground. If these inputs
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.
DC to 2.0 GHz
FUNCTIONAL BLOCK DIAGRAM
W = αXY/1V+Z
are ac-coupled, their nominal voltage will be VPOS/2. These input
interfaces each present a differential 500 Ω input impedance up to
approximately 700 MHz, decreasing to 50 Ω at 2 GHz. The gain
scaling input, GADJ, can be used for fine adjustment of the gain
scaling constant (α) about unity.
The differential output can swing ±2 V about the VPOS/2
common-mode and can be taken in a single-ended fashion as
well. The output common mode is designed to interface directly
to the inputs of another ADL5391. Light dc loads can be ground
referenced; however, ac-coupling of the outputs is recommended
for heavy loads.
The ENBL pin allows the ADL5391 to be disabled quickly to a
standby mode. It operates off supply voltages from 4.5 V to
5.5 V while consuming approximately 130 mA.
The ADL5391 is fabricated on Analog Devices proprietary, high
performance, 65 GHz, SOI complementary, SiGe bipolar IC
process. It is available in a 16-lead, Pb-free, LFCSP and operates
over a −40°C to +85°C temperature range. Evaluation boards
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
©2006 Analog Devices, Inc. All rights reserved.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage VPOS
XPLS, XMNS, YPLS, YMNS, ZPLS, ZMNS
Internal Power Dissipation
θJA (With Pad Soldered to Board)
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 60 sec)
−40°C to +85°C
−65°C to +150°C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
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