SYSTEM-READY D/A CONVERTERS COMBINE ACCURACY WITH INTEGRATED PRECISION REFERENCE CONDITIONING CIRCUITRY

20-bit AD5790 and 18-bit AD5780 D/A converters provide stability and ultra-low noise needed to increase accuracy of instrumentation equipment.
System-ready D/A Converters Combine Accuracy with Integrated Precision Reference Conditioning Circui

Norwood, MA (12/05/2011) - 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 instrumention 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.

View the AD5790 20-bit D/A converter product page, order samples, and download the datasheet: http://www.analog.com/AD5790

View the AD5780 18-bit D/A converter product page, order samples, and download the datasheet: http://www.analog.com/AD5780

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.

  • Access the Circuits from the Lab™ reference circuit note to learn how to integrate the AD5780 into your design, visit: http://www.analog.com/CN0200.

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 regulator.

Product Description Sample Availability Full-volume Production Availability Price Each Per 1,000 Package
AD5790 20-bit ±10 V D/A converter Now Now $67.50 24-lead 4-mm × 5-mm LFCSP (lead frame chip scale package)
AD5780 18-bit ±10 V D/A converter Now Now $19.50 24-lead 4-mm × 5-mm LFCSP
AD5760 16-bit ±10 V D/A converter Now Now $8.95 24-lead 4-mm × 5-mm LFCSP

For information on ADI’s D/A converter products, visit http://www.analog.com/DACs.

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. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

Editor's Contact Information:

Linda Kincaid
781-937-1472

linda.kincaid@analog.com

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