1.0 GHz DGA with 30 dB Range and
1 dB Step Size
Data Sheet
ADL5206
FEATURES
FUNCTIONAL BLOCK DIAGRAM
SPI/PARALLEL
INTERFACE
Digitally controlled VGA
VPOS EPAD PWUP
2 dB to 32 dB gain range
1 dB gain step size
ADL5206
LOGIC
MODEx
100 Ω differential input resistance
10 Ω differential output resistance
Noise figure: 5.1 dB at 300 MHz, 5 V supply, and
maximum gain
VOUT+
VOUT–
VIN–
VIN+
32dB
TO
100Ω
10Ω
2dB
OIP3 at maximum gain
39.4 dBm at 300 MHz at 5 V supply
38.1 dBm at 700 MHz at 5 V supply
Gain step accuracy: 0.2 dB
Figure 1.
−3 dB bandwidth at 32 dB: 1.0 GHz typical at 5 V supply
Multiple control interface options
Parallel 5-bit control interface with latch
3- and 4-wire SPI with fast attack
Gain step-up and step-down interface
Wide input dynamic range
Power-down control
Single 3.3 V or 5 V supply operation
112 mA quiescent current at 5 V supply
20-lead, 4 mm × 4 mm LFCSP
APPLICATIONS
Differential ADC drivers
High intermediate frequency (IF) sampling receivers
High output power IF amplification
DOCSIS FDx upstream amplifier
Instrumentation
GENERAL DESCRIPTION
The ADL5206 is a wide bandwidth, variable gain amplifier (VGA)
with digital control (also known as a digital gain amplifier (DGA))
that provides precise gain control, high output third-order
intercept (OIP3), and low noise figure over the entire gain
range. The excellent OIP3 performance of 39.4 dBm (at 300MHz,
5 V supply, and maximum gain) makes the ADL5206 an excellent
gain control device for a variety of receiver applications.
current of the ADL5206 is typically 112 mA with a 5 V supply.
When disabled, the ADL5206 consumes only 8 mA and offers
excellent input to output isolation. The gain setting is preserved
when the device is disabled.
Fabricated on the Analog Devices, Inc., high speed, silicon
germanium (SiGe), bipolar complementary metal-oxide
semiconductor (BiCMOS) process, the ADL5206 provides
precise gain adjustment capabilities with good distortion
performance. The ADL5206 amplifier comes in a compact,
thermally enhanced, 4 mm × 4 mm, 20-lead LFCSP and
operates over the temperature range of −40°C to +85°C.
For wide input dynamic range applications, the ADL5206
provides a broad 2 dB to 32 dB gain range with a 1 dB step size.
The gain is adjustable through multiple gain control and interface
options: parallel, serial peripheral interface (SPI), or gain step-up
and step-down controls.
Note that throughout this data sheet, multifunction pins, such
The ADL5206 can be powered up independently by applying
the appropriate logic level to the PWUP pin. The quiescent
CS
as /GS1/D3, are referred to by the entire pin name or by a
single function of the pin.
Rev. 0
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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 registeredtrademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
©2020 Analog Devices, Inc. All rights reserved.
www.analog.com
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