Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal processing applications and market leader in amplifier ICs, today introduced a digitally programmable VGA (variable gain amplifier) with transmit driver that sets a new standard of performance for driving signals over power lines, cables, and other applications with low impedance. The AD8260 operates on a single 3.3-V power supply and has a transmit driver that produces +/-200-mA output up to 100 kHz, and greater than +/-100-mA above that frequency. This is an improvement over competing solutions using a discrete VGA, output driver and pre-amp, which consume 90 percent more board space, and require multiple power supplies.
NORWOOD, Mass. (Business Wire EON) February 6, 2008 --
Analog Devices, Inc. (ADI), a global leader in high-performance
semiconductors for signal processing applications and market leader in
amplifier ICs, today introduced a digitally programmable VGA (variable
gain amplifier) with transmit driver that sets a new standard of
performance for driving signals over power lines, cables, and other
applications with low impedance. The AD8260
operates on a single 3.3-V power supply and has a transmit driver that
produces ±200-mA output up to 100 kHz,
and greater than ±100-mA above that
frequency. This is an improvement over competing solutions using a
discrete VGA, output driver and pre-amp, which consume 90 percent more
board space, and require multiple power supplies.
The AD8260 VGA operates at -3dB bandwidth of 200-MHz and includes a
30-dB gain range digitally adjustable in 3-dB gain steps providing the
headroom needed for losses introduced in various cabling systems. The
new VGA features 2.4nV/rtHz input voltage noise and driver with a
built-in gain of 1.5, which is ideal for converting DAC
(digital-to-analog converter) differential output signals to a voltage
that can directly drive very low impedances. The AD8260 can fully drive
a 10 Ω load with 2 Vpp at 10 MHz. In addition,
the chip dissipates just 93 mW of power, which is less than half that of
competing devices.
More About the AD8260
The AD8260 includes a high-current driver, usable as a transmitter, and
a low-noise digitally programmable VGA, which is useable as a receiver,
combined in a 5 mm x 5 mm chip-scale package. The receiver section
consists of a single-ended input preamplifier and linear-in-dB,
differential-output VGA. The differential output facilitates the
interface to modern low-voltage, high-speed ADCs (analog-to-digital
converters). Versatile single- and dual-supply operation allow gain
control of negative-going pulses, such as generated by photodiodes or
photo-multiplier tubes, and allows for the processing of band-pass
signals on a single supply. The AD8260 preamplifier is user-configurable
with external resistors for gains greater than 6 dB.
The driver is set-up to be driven by modern current output DACs, like
the high-speed AD9742 12 bit, 3.3 V supply DAC.
Pricing and Availability
The AD8260 is sampling now, with full volume production scheduled for
March 2008. The AD8260 is available in a 32-Lead LFCSP (lead-frame
chip-scale package) over the extended industrial temperature range -40C
to 105C and is priced at $3.79 in 1,000-unit quantities. For more
information, visit http://www.analog.com/pr/AD8260.
About Analog Devices
Innovation, 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
industry-wide 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. http://www.analog.com
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