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AD9218:  10-Bit, 40/65/80/105 MSPS 3 V Dual A/D Converter

Product Details

The AD9218 is a dual 10-bit monolithic sampling analog-to-digital converter with on-chip track-and-hold circuits. The product is low cost, low power, and is small and easy to use. The AD9218 operates at a 105 MSPS conversion rate with outstanding dynamic performance over its full operating range. Each channel can be operated independently.

The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power supply and a clock for full operation. No external reference or driver components are required for many applications. The digital outputs are TTL/CMOS compatible and a separate output power supply pin supports interfacing with 3.3 V or 2.5 V logic.

The clock input is TTL/CMOS compatible and the 10-bit digital outputs can be operated from 3.0 V (2.5 V to 3.6 V) supplies. User-selectable options offer a combination of power-down modes, digital data formats, and digital data timing schemes. In power-down mode, the digital outputs are driven to a high impedance state.

Product Highlights
1. Low Power. Only 275 mW power dissipation per channel at 105 MSPS. Other speed grades proportionally scaled down while maintaining high ac performance.
2. Pin Compatibility Upgrade. Allows easy migration from 8-bit to 10-bit devices. Pin compatible with the 8-bit AD9288 dual ADC.
3. Easy to Use. On-chip reference and user controls provide flexibility in system design.
4. High Performance. Maintains 54 dB SNR at 105 MSPS with a Nyquist input.
5. Channel Crosstalk. Very low at –75 dBc. 6. Fabricated on an Advanced CMOS Process. Available in a 48-lead low profile quad flat package (7 mm × 7 mm LQFP) specified over the industrial temperature range (−40°C to +85°C).


  • Battery-powered instruments
  • Hand-held scopemeters
  • Low cost digital oscilloscopes
  • I and Q communications
  • Ultrasound equipment
  • Data Sheet, Rev. C, 12/06


    • Dual 10-bit, 40 MSPS, 65 MSPS, 80 MSPS, and 105 MSPS ADC
    • Low power: 275 mW at 105 MSPS per channel
    • On-chip reference and track-and-hold
    • 300 MHz analog bandwidth each channel
    • SNR = 57 dB @ 41 MHz, Encode = 80 MSPS
    • 1 V p-p or 2 V p-p analog input range each channel
    • 3.0 V single-supply operation (2.7 V to 3.6 V)
    • Power-down mode for single-channel operation
    • Twos complement or offset binary output mode
    • Output data alignment mode
    • Pin compatible with the 8-bit AD9288
    • –75 dBc crosstalk between channels

    Functional Block Diagram for AD9218

    Of Note ...

    To drive this ADC in DC-coupled applications, we suggest ADA4938-1. To drive this ADC in AC-coupled applications, we suggest AD8351 or AD8352.


    Title Content Type File Type
    AD9218: 10-Bit, 40/65/80/105 MSPS 3 V Dual Analog-to-Digital Converter Data Sheet  (Rev C, 01/2007) (pdf, 945 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-905: VisualAnalog Converter Evaluation Tool Version 1.0 User Manual  (pdf, 2124 kB) Application Notes PDF
    AN-935: Designing an ADC Transformer-Coupled Front End  (pdf, 363 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-345: Grounding for Low-and-High-Frequency Circuits  (pdf, 455 kB)
    Know Your Ground and Signal Paths for Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
    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
    UG-173: High Speed ADC USB FIFO Evaluation Kit (HSC-ADC-EVALB-DCZ)  (pdf, 774 kB) User Guides PDF
    Ultrasound System Considerations and their Impact on Front-End Components  (pdf)
    (Analog Dialogue, Vol 36, No. 3)
    Analog Dialogue PDF
    MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
    Correlating High-Speed ADC Performance to Multicarrier 3G Requirements
    by Brad Brannon (RF Design, 6/1/2003)
    Technical Articles HTML
    Single Chip Realizes Direct-Conversion Rx  (pdf, 2518 kB)
    ... Direct-conversion Rxs offer advantages in simplicity compared to conventional superheterodyne approaches, although attention must be paid to some of the trade-offs.
    (Microwaves & RF, October 2002)
    Technical Articles PDF
    DNL and Some of its Effects on Converter Performance
    ... by Brad Brannon, Analog Devices, Inc. (Wireless Design & Development, June 2001)
    Technical Articles HTML
    Proper Grounding Is Critical For High-Speed Systems
    ... by Walt Kester and James Bryant, Analog Devices, Inc. (Wireless Systems Design, May 2000)
    Technical Articles HTML
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    ADIsimADC is Analog Devices' Analog-to-Digital Behavioral Model that accurately models the typical performance characteristics of many of our High Speed Converters. The model faithfully reproduces the errors associated with both static and dynamic features such as AC linearity, clock jitter, and many other product specific anomalies.
    ADIsim Design/Simulation Tools HTML
    AD9218 IBIS Models IBIS Models 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

    AD9218 Model Options
    Model Package Pins Temp.
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    AD9218BST-105 Status: Production 48 ld LQFP 48 Ind Tray, 250 $23.34 $21.01 N  Material Info PCN Purchase
    AD9218BST-RL105 Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $21.01 N  Material Info PCN Purchase
    AD9218BSTZ-105 Status: Production 48 ld LQFP 48 Ind Tray, 250 $19.25 $17.33 Y  Material Info PCN Purchase
    AD9218BSTZ-40 Status: Production 48 ld LQFP 48 Ind Tray, 250 $10.71 $9.11 Y  Material Info PCN Purchase
    AD9218BSTZ-65 Status: Production 48 ld LQFP 48 Ind Tray, 250 $13.23 $11.90 Y  Material Info PCN Purchase Sample
    AD9218BSTZ-80 Status: Production 48 ld LQFP 48 Ind Tray, 250 $15.03 $13.52 Y  Material Info PCN Purchase
    AD9218BSTZ-RL105 Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $17.33 Y  Material Info PCN Purchase
    AD9218BSTZ-RL40 Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $9.11 Y  Material Info PCN Purchase
    AD9218BSTZ-RL65 Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $11.90 Y  Material Info PCN Purchase
    AD9218BSTZ-RL80 Status: Production 48 ld LQFP 48 Ind Reel, 2000 - $13.52 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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