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AD9262:  16-Bit, 2.5 MHz/5 MHz/10 MHz, 30 MSPS to 160 MSPS Dual Continuous Time Sigma-Delta ADC

Product Details

Product Status:Recommended for New Designs

The AD9262 is a dual, 16-bit analog-to-digital converter (ADC) based on a continuous time sigma-delta (Σ-Δ) architecture that achieves -87 dB of dynamic range over a 10 MHz input bandwidth. The integrated features and characteristics unique to the continuous time Σ-Δ architecture significantly simplify its use and minimize the need for external components.

The AD9262 has a resistive input impedance that significantly relaxes the requirements of the driver amplifier. In addition, a 32× oversampled 5th-order continuous time loop filter significantly attenuates out of band signals and aliases, reducing the need for external filters at the input.

An external clock input or the integrated integer-N PLL provides the 640 MHz internal clock needed for the oversampled continuous time Σ-Δ modulator. On-chip decimation filters and sample rate converters reduce the modulator data rate from 640 MSPS to a user-defined output data rate between 30 MSPS to 160 MSPS, enabling a more efficient and direct interface.

The AD9262 incorporates an integrated dc correction and quadrature estimation block that corrects for gain and phase mismatch between the two channels. This functional block proves invaluable in complex signal processing applications such as direct conversion receivers.

The digital output data is presented in offset binary, Gray code, or twos complement format. A data clock output (DCO) is provided to ensure proper timing with the receiving logic. The AD9262 has the added feature of interleaving Channel A and Channel B data onto one 16-bit bus, simplifying on-board routing.

The ADC is available in three different bandwidth options of 2.5 MHz, 5 MHz, and 10 MHz, and operates on a 1.8 V analog supply and a 1.8 V to 3.3 V digital supply, consuming 600 mW. The AD9262 is available in a 64-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

  1. Continuous time Σ-Δ architecture efficiently achieves high dynamic range and wide bandwidth.
  2. Passive input structure reduces or eliminates the requirements for a driver amplifier.
  3. An oversampling ratio of 32× and high order loop filter provide excellent alias rejection reducing or eliminating the need for antialiasing filters.
  4. An integrated decimation filter, sample rate converter, PLL clock multiplier, and voltage reference provide ease of use.
  5. Operates from a single 1.8 V analog power supply and 1.8 V to 3.3 V output supply.
  6. A standard serial port interface (SPI) supports various product features and functions.

Applications

  • Baseband quadrature receivers: CDMA2000, WCDMA, multicarrier GSM/EDGE, 802.16x, and LTE
  • Quadrature sampling instrumentation
  • Medical equipment
  • Radio detection and ranging (RADAR)

FEATURES and BENEFITS

  • SNR: 83 dB (85 dBFS) to 10 MHz input
  • SFDR: 87 dBc to 10 MHz input
  • Noise figure: 15 dB
  • Input impedance: 1 kΩ
  • Power: 600 mW
  • 1.8 V analog supply operation
  • 1.8 V to 3.3 V output supply
  • Selectable bandwidth
    2.5 MHz/5 MHz/10 MHz real
    5 MHz/10 MHz/20 MHz complex
  • Dual channel modulator only version available (AD9267)
  • Output data rate: 30 MSPS to 160 MSPS
  • See data sheet for additional features

Functional Block Diagram for AD9262

Documentation

Title Content Type File Type
AD9262: 16-Bit, 2.5 MHz/5 MHz/10 MHz, 30 MSPS to 160 MSPS Dual Continuous Time Sigma-Delta ADC Data Sheet (Rev A, 02/2010) (pdf, 86 kB) Data Sheets PDF
AN-1236: Interfacing the ADL5382 Quadrature I/Q Demodulator to the AD9262 16-Bit Continuous Time Sigma-Delta ADC as an RF-to-Bits Solution  (pdf, 109 kB) Application Notes PDF
AN-1142: Techniques for High Speed ADC PCB Layout  (pdf, 392 kB) Application Notes PDF
AN-878: High Speed ADC SPI Control Software  (pdf, 585 kB) Application Notes PDF
AN-282: Fundamentals of Sampled Data Systems  (pdf, 2131 kB) Application Notes PDF
AN-807: Multicarrier WCDMA Feasibility  (pdf, 969 kB) Application Notes PDF
AN-808: Multicarrier CDMA2000 Feasibility  (pdf, 1535 kB)
The goal of this application note is to determine the feasibility of implementing a multicarrier CDMA2000 transceiver and what the major subsystem performances must be.
Application Notes PDF
AN-877: Interfacing to High Speed ADCs via SPI  (pdf, 1594 kB) Application Notes PDF
AN-905: VisualAnalog Converter Evaluation Tool Version 1.0 User Manual  (pdf, 2124 kB) Application Notes PDF
AN-835: Understanding High Speed ADC Testing and Evaluation  (pdf, 985 kB) Application Notes PDF
AN-812:  MicroController-Based Serial Port Interface (SPI) Boot Circuit (pdf, 452,449 bytes)  (pdf, 441 kB)
This application note describes the operation of a general-purpose, microcontroller-based Serial Port Interface (SPI) boot circuit.
Application Notes PDF
AN-283: Sigma-Delta ADCs and DACs  (pdf, 1699 kB)
Overview of Sigma-Delta Concepts: Oversampling, Noise Shaping Using the Sigma-Delta Modulator, Digital Filtering and Decimation.
Application Notes PDF
AD9262: Dual Continuous Time Sigma-Delta ADC
This video features the thought leaders (engineers and marketeers) involved with the creation of the AD9262. The AD9262 is a dual, 16-bit analog-to-digital converter (ADC) based on a continuous time sigma-delta architecture that achieves 86 dB of dynamic range over a 10 MHz input bandwidth.
Videos HTML
UG-051: Evaluating the AD9262, 16-Bit, Dual Continuous Time Sigma Delta ADC and Demonstrating Direct Conversion  (pdf, 1200 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Understanding Continuous-Time, Discrete-Time Sigma-Delta ADCs And Nyquist ADCs
Due to the high performance, efficiency, and ease of use of the CT-ΣΔ architecture, manufacturers of high-performance analog-to-digital converters (ADCs) are now bringing this converter architecture to market as a standard product.
(Electronic Design, February 20, 2009)
Technical Articles HTML
AD926x Family 16-Bit, 10 MHz Bandwidth, Continuous-Time Sigma-Delta (CTSD) Analog-to-Digital Converters  (pdf, 1406 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADIsimADC
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
AD9262 IBIS Model IBIS Models HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

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.

Product Recommendations & Reference Designs

Companion Products

Suggested Companion Products


Recommended Driver Amplifiers for the AD9262

  • For RF/IF demodulator driver, we recommend the ADL5382.
Recommended Clock Drivers for the AD9262 Recommended External Reference for the AD9262
  • For an accuarte, stable,.5V reference, we suggest the ADR130.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9262 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9262BCPZ Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Tray, 260 $35.29 $30.00 Y  Material Info Notify Me Purchase
AD9262BCPZ-10 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Tray, 260 $56.47 $48.00 Y  Material Info Notify Me Purchase
AD9262BCPZ-5 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Tray, 260 $43.53 $37.00 Y  Material Info Notify Me Purchase
AD9262BCPZRL7 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Reel, 750 $35.29 $30.00 Y  Material Info Notify Me Purchase
AD9262BCPZRL7-10 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Reel, 750 $56.47 $48.00 Y  Material Info Notify Me Purchase
AD9262BCPZRL7-5 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Reel, 750 $43.53 $37.00 Y  Material Info Notify Me 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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