Analog Devices’ 256-Channel, 16-Bit Digital X-Ray Analog Front End Delivers Industry’s Best Combination of Noise, Power and

  Analog Devices’ 256-Channel, 16-Bit Digital X-Ray Analog Front End Delivers
  Industry’s Best Combination of Noise, Power and Image Quality

        ADI’s ADAS1256 analog front end (AFE) integrates the complete
charge-to-digital conversion signal chain on a single chip, enabling a variety
           of digital X-ray modalities including portable systems.

Business Wire

NORWOOD, Mass. -- November 27, 2012

Analog Devices, Inc., (NASDAQ: ADI), the leading provider of data conversion
technology* and longtime collaborator to the medical imaging industry, today
introduced a highly integrated digital X-ray analog front end (AFE) with the
industry’s lowest noise performance in multiple power-mode options, and the
highest image quality. The 256-channel ADAS1256 digital X-ray AFE is the
industry’s first single-chip solution to integrate the complete
charge-to-digital conversion signal chain by incorporating low-noise
programmable-charge amplifiers, correlated double-sampling circuitry and
16-bit A/D converters. With a noise figure of an equivalent charge of 560
electrons at a 2-picocoulomb full-scale range, the ADAS1256 enables high
resolution digital X-ray images while reducing patient exposure to X-ray dose.
The ADAS1256 has multiple functional power modes ranging from 1-mW/channel to
3-mW/channel, allowing manufacturers to address a wide range of digital X-ray
modalities including portable radiology and mammography as well as high speed
fluoroscopy and cardiac imaging.

  *Visit the product page and download a short-form datasheet:
  *View complete datasheet and order evaluation boards by completing a
    Non-Disclosure Agreement (NDA) found on the ADAS1256 product page:
  *Learn more about ADI’s digital X-ray and imaging technologies:

“Thanks to the ultra-low-noise profile and dynamic range of the ADAS1256,
digital X-ray technology will continue to deliver better diagnostic image
quality and reduce radiation dosage applied to patients compared to existing
digital X-ray systems,” said Pat O’Doherty, vice president, healthcare group,
Analog Devices. “By achieving this level of performance while adhering to a
strict power budget, the ADAS1256 digital X-ray AFE provides medical equipment
designers with a single device that serves the growing high-performance
requirements of the portable digital X-ray market.”

About the ADAS1256 Digital X-Ray AFE

The ADAS1256 is a 256-channel, simultaneous sampling, high dynamic range, low
power analog front end that is a complete charge-to-digital conversion signal
chain. It incorporates 256 low noise integrators, low pass filters, and
correlated double samplers that are multiplexed into a high speed, 16-bit, A/D
converter. All converted channel results are output on a single LVDS
(low-voltage differential signaling) self-clocked serial interface. The
ADAS1256 can be programmed using an SPI-compatible daisy-chain serial
interface. It is delivered on a high density system-on-flex (SOF) package and
can be directly mounted on a digital X-ray panel.

ADAS1256 Digital X-Ray AFE Key Features

  *Single-chip, 256-channel, charge-to-digital conversion
  *16-bit resolution with no missing codes
  *Simultaneous sampling
  *User adjustable full-scale range up to 32 pC (picocoulombs)
  *Ultralow noise: 560 e− at 2pC range
  *Multiple functional power modes: from 1-mW/ch to 3-mW/ch
  *Power-down and sleep modes down to 0.005-mW/ch

Pricing, Availability and Complementary Products
                A/D Converter                       Unit Price in 1K-piece
Part Number                   Channel Count   Quantities
ADAS1256      16 bits         256             $256

The ADAS1256 is compatible with the ADP7104 and ADP1708 low dropout linear
regulators, ADP1828 synchronous, step-down dc-to-dc controller, ADR444 voltage
reference, ADCLK846 LVDS/CMOS fanout buffer and ADXL345 MEMS digital

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 is included in the S&P 500 Index.

* Analog Devices, Inc. leads the worldwide data converter market with a 48
percent share, according to industry analyst firm Databeans, Inc. in its
market research report titled “2011 Data Converters.” Analog Devices’ 48
percent share is larger than the combined market share of the nearest eight

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Analog Devices, Inc.
Edie Kramer, 781-937-1734
Porter Novelli
Andrew MacLellan, 617-897-8270
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