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AD9221:  Complete 12-Bit 1.25 MSPS Monolithic A/D Converter

Product Details


The AD9221, AD9223, and AD9220 are a generation of high performance, single supply 12-bit analog-to-digital converters. Each device exhibits true 12-bit linearity and temperature drift performance1 as well as 11.5 bit or better ac performance2. The AD9221/AD9223/AD9220 share the same interface options, package, and pinout. Thus, the product family provides an upward or downward component selection path based on performance, sample rate and power. The devices differ with respect to their specified sampling rate and power consumption which is reflected in their dynamic performance over frequency.

The AD9221/AD9223/AD9220 combine a low cost, high speed single-CMOS process and a novel architecture to achieve the resolution and speed of existing hybrid and monolithic implementations at a fraction of the power consumption and cost. Each device is a complete, monolithic ADC with an on-chip, high performance, low noise sample-and-hold amplifier and programmable voltage reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of the application. The devices use a multistage differential pipelined architecture with digital output error correction logic to provide 12-bit accuracy at the specified data rates and to guarantee no missing codes over the full operating temperature range.

The input of the AD9221/AD9223/AD9220 is highly flexible, allowing for easy interfacing to imaging, communications, medical, and data-acquisition systems. A truly differential input structure allows for both single-ended and differential input sample-interfaces of varying input spans. The sample-and-hold (SHA) amplifier is equally suited for both multiplexed systems that switch full-scale voltage levels in successive channels as well as sampling single-channel inputs at frequencies up to and beyond the Nyquist rate. Also, the AD9221/AD9223/AD9220 is well suited for communication systems employing IF Down Conversion since the SHA in the differential input mode can achieve excellent dynamic performance far beyond its specified Nyquist frequency2.

A single clock input is used to control all internal conversion The digital output data is presented in straight binary format. An out-of-range (OTR) signal indicates an flow condition which can be used with the most significant bit to determine low or high overflow.

NOTES:
1 Excluding internal voltage reference
2 Depends on the analog input configuration

FEATURES and BENEFITS

  • Monolithic 12-Bit A/D Converter Product Family
  • Family Members are: AD9221, AD9223, and AD9220
  • Flexible Sampling Rates:
    1.5 MSPS, 3.0 MSPS, and 10 MSPS
  • Low Power Dissipation:
    59 mW, 100 mW, and 250 mW
  • Single +5 V Supply
  • Integral Nonlinearity Error: 0.5 LSB
  • Differential Nonlinearity Error: 0.3 LSB
  • 70 dB SNR and 86 dB SFDR
  • Out-of-Range Indicator
  • 28-SOIC and 28-SSOP

Functional Block Diagram for AD9221

OF NOTE ...

For information on sample availability or additional technical support, please email the High-Speed Converter Group and supply your name, company, mailing address, telephone/fax numbers, email address, and a brief description of your application.

Documentation

Title Content Type File Type
AD9221/AD9223/AD9220: Complete 12-Bit 1.5/3.0/10.0 MSPS Monolithic A/D Converters Data Sheet (Rev E, 02/2003) (pdf, 512 kB) Data Sheets PDF
AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
AN-737: How ADIsimADC Models an ADC  (pdf, 373 kB) Application Notes PDF
AN-835: Understanding High Speed ADC Testing and Evaluation  (pdf, 985 kB) Application Notes PDF
AN-715: A First Approach to IBIS Models: What They Are and How They Are Generated  (pdf, 370 kB) Application Notes PDF
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter  (pdf, 291 kB) Application Notes PDF
AN-501: Aperture Uncertainty and ADC System Performance  (pdf, 227 kB)
A Key Concern in IF Sampling is that of Aperture Uncertainty (Jitter)
Application Notes PDF
AN-414: Low Cost, Low Power Devices for HDSL Applications  (pdf, 41 kB) Application Notes PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

AD9221 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9221AR Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $11.43 $9.72 N  Material Info PCN Purchase
AD9221AR-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $9.72 N  Material Info PCN Purchase
AD9221ARS Status: Production 28 ld SSOP 28 Ind Tube, 47 $10.00 $8.51 N  Material Info PCN Purchase
AD9221ARS-REEL Status: Production 28 ld SSOP 28 Ind Reel, 1500 - $8.51 N  Material Info PCN Purchase
AD9221ARSZ Status: Production 28 ld SSOP 28 Ind Tube, 47 $9.11 $7.74 Y  Material Info PCN Purchase
AD9221ARSZ-REEL Status: Production 28 ld SSOP 28 Comm. Reel, 1500 - $7.74 Y  Material Info PCN Purchase
AD9221ARZ Status: Production 28 ld SOIC - Wide 28 Ind Tube, 27 $10.41 $8.86 Y  Material Info PCN Purchase
AD9221ARZ-REEL Status: Production 28 ld SOIC - Wide 28 Ind Reel, 1000 - $8.86 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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