Copyright: 1996 - 2024
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling
2 MB. Its primary purpose was to provide me with ready access to commonly needed
formulas and reference material while performing my work as an RF system and circuit
design engineer. The World Wide Web (Internet) was largely an unknown entity at
the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps
while typing up your telephone line, and a nice lady's voice announced "You've Got
Mail" when a new message arrived...
All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
Analog Devices Press Release - December 5, 2011
Analog Devices Announces System-Ready D/A Converters Combine Accuracy
-- 20-bit AD5790 and 18-bit AD5780 D/A converters provide stability and ultra-low noise
with Integrated Precision Reference Conditioning Circuitry
increase accuracy of instrumentation equipment.
NORWOOD, Mass.--( BUSINESS WIRE)-- Analog Devices, Inc. (NYSE: ADI), the leading provider of data conversion technology*, today introduced D/A
(digital-to-analog) converters that provide high accuracy and ultra-low noise, simplifying the design of precision
instrumentation and analytical equipment. The new high-accuracy D/A converters incorporate integrated precision
reference conditioning circuitry, making them system ready and providing a 60 percent reduction in board space
compared to competing standalone data converters.
The high linearity and low noise of the AD5790 and AD5780 D/A converters reduce the need to calibrate systems for
nonlinearity or to time-average multiple measurements. The high stability and low drift of the converters over
time and temperature reduce the need to compensate systems for aging and temperature effects. These features
combine to significantly improve repeatability, reduce system downtime, and lower system maintenance costs.
Precision analog system design often entails the complex engineering challenges of combining a precision D/A
converter with a significant amount of signal conditioning and support circuitry to eliminate nonlinearity,
minimize thermoelectric and noise sources, and reduce offset errors. The integrated precision reference buffers
incorporated into the AD5790 and AD5780 D/A converters significantly simplify this development effort for high-end
systems, simultaneously reducing performance risk and design cycles.
“Enhancements in data conversion
allow instrumentation system designers to develop, characterize and test next-generation electronic measurement
equipment,” said Mike Britchfield, vice president, Industrial and Instrumentation Group, Analog Devices. “The
AD5790 and AD5780 D/A converters establish new benchmarks in precision by respectively combining 20-bit and 18-bit
performance, ultra-low noise, and integrated precision reference conditioning circuitry in a single device to
enable complex applications in a wide range of industries.”
AD5790 and AD5780 D/A Converters Achieve
9-nV/rt-Hz Noise Spectral Density
The AD5790 D/A converter offers ±2-LSB accuracy at 20-bit, while the AD5780
features ±1-LSB accuracy at 18-bit over temperature. Guaranteed monotonic, the devices specify –1-LSB max DNL. The
AD5790 and AD5780 D/A converters feature 1.1-µV peak-to-peak, low-frequency output noise, 9-nV/rt-Hz noise
spectral density and less than 0.05-ppm/°C temperature drift. The output can be configured for standard unipolar
(+5 V, +10 V) or bipolar (±5 V, ±10 V) output ranges. The devices, which use a versatile three-wire serial
interface that operates at clock rates up to 50 MHz, feature a 2.5-µs analog update rate. The AD5790 and AD5780
D/A converters are fully specified over the extended temperature range of –40º C to +125º C.
Recommended Complementary Components
Complementary components for the AD5790 and AD5780 D/A converters include the AD8675 and ADA4004-x series of
operational amplifiers, ADP3331 voltage regulator, ADP1864 step-down dc-to-dc controller, and ADP121 linear
Pricing and Availability
For information on ADI's D/A converter products, visit
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.
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.
Devices, Inc. leads the worldwide data converter market with a 46 percent share, according to industry analyst
Databeans, Inc. in its market research report titled "2010 Data Converters." Analog Devices' 46 percent share
is larger than the combined market share of the nearest eight competitors.
Explore technical fundamentals
and design considerations for various aspects of the data conversion function. Visit ADI's Data Conversion
Knowledge Resource web page:
Connect with engineers and ADI product experts on EngineerZone™, an online technical support community:
Follow ADI on Twitter at
Subscribe to Analog Dialogue, ADI's monthly technical journal, at:
Analog Devices, Inc.
Date Posted 12/5/2011br>