Differential RF/IF Amplifiers from Analog Devices Set New Distortion
and Linearity Standards for Driving High Frequency ADCs
New ADL5561/62 amplifiers simplify drive for 12- to 16-bit analog-to-digital
converters in advanced wire-line and wireless communications systems
up to 500 MHz.
Online News)-- Analog Devices, Inc. (NYSE: ADI), a global leader
in high-performance semiconductors for signal-processing applications,
announced today two new ultra-low-distortion differential amplifiers
that set new performance standards for linearity and power consumption.
and ADL5562 differential
amplifiers efficiently drive high-speed, high-IF sampling ADCs (analog-to-digital
converters) required by today’s advanced communications systems. The
ADL5561 and ADL5562 are capable of maintaining performance while driving
ADCs up to 500 MHz, exceeding the industry’s previous maximum of 380
MHz, set in 2005 by ADI’s AD8352 differential amplifier.
On-chip, user-selectable gain-setting resistors enable ADI
to provide detailed specifications at common IF frequencies (70 MHz,
100 MHz, 140 MHz, and 250 MHz) and common gain settings (6 dB, 12 dB,
15.5 dB). This degree of specified performance simplifies and expedites
the design process, provides previously unattainable flexibility, and
allows the designer to exploit fully the amplifier’s performance at
multiple gain settings and IF frequencies. Additionally, the pin-compatible
ADL5561 and ADL5562 allow the user to select power consumption and performance
to meet the requirements for a given application.
The ADL5561 and ADL5562 amplifiers drive 12- to 16-bit ADCs at the highest
practical IF frequencies for use in next-generation communications systems,
such as 3G LTE (Long-Term Evolution) and NGMN (Next Generation Mobile
Networks). In today’s demanding advanced-radio applications , lowering
the distortion level of the ADC driver improves system performance at
higher frequencies by helping to maximize the receive channel’s SFDR
(spurious free dynamic range) and minimize its SNR (signal-to-noise-ratio).
This improvement minimizes the number of IF frequencies within the radio
design, resulting in lower power, cost, component count, and board area,
and advancing system-level performance in applications such as wireless
base stations, cable communications, medical and instrumentation, military
and satellite communications.
ADL5562 set new industry standards with exceptional performance and
low power within small footprint package.
ADL5561 ultra-low-distortion differential amplifier consumes just 40
mA, making it ideally suited for use in sub-140 MHz IF applications.
The ADL5561 beats the industry’s best performance and provides new a
benchmark for performance vs. power consumption with maximum flexibility.
The ADL5561 achieves distortion levels of –86 dBc HD2, –88 dBc HD3,
and –95 dBc IMD3 at 100 MHz.
The 2.6 GHz ADL5562 ultra-low-distortion
differential amplifier consumes 80 mA, setting a new standard for the
industry’s lowest distortion for IF applications up to 500 MHz. The
ADL5562 achieves distortion levels of –95 dBc HD2, –86 dBc HD3, and
–96 dBc IMD3 at 140 MHz.
Both the ADL5561 and ADL5562
operate on a 3-volt power supply and are available in a space-saving
3 mm × 3 mm LFCSP. Furthermore, unlike conventional GaAs differential
amplifiers, which often require the use of a transformer to perform
the single-ended to differential conversion, the ADL5561 and ADL5562
can operate in fully differential circuits or provide the single-ended
to differential conversion.
The ADL5561 and ADL5562 samples are available
now. Production quantities will be available in April 2009. Both devices
cost $3.68 per unit in 1,000-piece quantities. For the data sheet and
additional information, please visit
ADI’s RF IC portfolio covers entire RF signal chain.
Using a unique combination of design skills, systems
understanding, and process technologies, Analog Devices is the only
single-source provider of RF ICs for all major RF-to-digital functional
building blocks. Complemented by a full suite of des
these RF function blocks include DDS (direct digital synthesizers) devices,
PLLs; TruPwr™ power detectors and logarithmic amplifiers, X-Amp® VGAs
(variable gain amplifiers), PAs (power amplifiers), LNAs and other RF
amplifiers, mixers, and direct conversion modulator and demodulator
products. For more information, visit
About Analog Devices, Inc.
performance, and excellence are the cultural pillars on which Analog
Devices has built one of the longest standing, highest growth companies
within the technology sector. Acknowledged throughout the industry as
the world leader in data conversion and signal conditioning technology,
Analog Devices serves over 60,000 customers, representing virtually
all types of electronic equipment. Celebrating over 40 years as a leading
global manufacturer of high-performance integrated circuits used in
analog and digital signal processing applications, Analog Devices is
headquartered in Norwood, Massachusetts, with design and manufacturing
facilities throughout the world. Analog Devices' common stock is listed
on the New York Stock Exchange under the ticker “ADI” and is included
in the S&P 500 Index.For more information
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Analog Devices, Inc.
Bob Olson, 781-937-1666