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AD9641:  14-Bit, 80 MSPS/155 MSPS, 1.8 V Serial Output Analog-to-Digital Converter (ADC)

Product Details

Product Status:Recommended for New Designs

For more information on JESD204 go to www.analog.com/jesd204.

The AD9641 is a 14-bit, 80 MSPS/155 MSPS analog-to-digital converter (ADC) with a high speed serial output interface. The AD9641 is designed to support communications applications where high performance, combined with low cost, small size, and versatility, is desired. The JESD204A high speed serial interface reduces board routing requirements and lowers pin count requirements for the receiving device.

The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features wide bandwidth, differential sample-and-hold, analog input amplifiers that support a variety of user-selectable input ranges. An integrated voltage reference eases the design considerations. A duty cycle stabilizer (DCS) is provided to compensate for variations in the ADC clock duty cycle, allowing the converter to maintain excellent performance.

The ADC output data is routed directly to the JESD204A serial output port. This output is at CML voltage levels. A CMOS or LVDS synchronization input (DSYNC) is provided.

The flexible power-down options allow significant power savings, when desired.

Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface.

The AD9641 is available in a 32-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.


Applications
  • Communications
  • Diversity radio systems
  • Multimode digital receivers (3G and 4G)
    GSM, EDGE, W-CDMA, LTE,
    CDMA2000, WiMAX, TD-SCDMA
  • Smart antenna systems
  • General-purpose software radios
  • Broadband data applications
  • Ultrasound equipment

Product Highlights
  1. An on-chip PLL allows users to provide a single ADC sampling clock. The PLL multiplies the ADC sampling clock to produce the corresponding JESD204A data rate clock.
  2. The configurable JESD204A output block coded data rate supports up to 1.6 Gbps.
  3. A proprietary differential input maintains excellent SNR performance for input frequencies up to 250 MHz.
  4. Operation is from a single 1.8 V power supply.
  5. The standard serial port interface (SPI) supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), controlling the clock DCS, power-down, test modes, voltage reference mode, and serial output configuration.

FEATURES and BENEFITS

  • JESD204A coded serial digital outputs
  • SNR = 73.7 dBFS @70 MHz and 80MSPS
  • SNR = 72.8 dBFS @70 MHz and 155MSPS
  • SFDR = 94 dBc @ 70 MHz and 80 MSPS
  • SFDR = 90 dBc @ 70 MHz and 155 MSPS Low power: 238 mW @ 80 MSPS 1.8 V supply operation
  • Low power: 238 mW @ 80 MSPS, 313mW at 155 MSPS
  • 1.8 V supply operation
  • Integer 1-to-8 input clock divider
  • IF sampling frequencies to 250 MHz
  • Please see data sheet for additional features

Functional Block Diagram

JESD204

Documentation

Title Content Type File Type
AD9641: 14-Bit, 80 MSPS, 1.8 V Serial Output Analog-to-Digital Converter (ADC)  (Rev B, 01/2012) (pdf, 926 kB) Data Sheets 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-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-827: A Resonant Approach to Interfacing Amplifiers to Switched-Capacitor ADCs  (pdf, 203 kB) Application Notes PDF
AN-877: Interfacing to High Speed ADCs via SPI  (pdf, 1594 kB) Application Notes PDF
AN-935: Designing an ADC Transformer-Coupled Front End  (pdf, 363 kB) Application Notes PDF
AN-586: LVDS Outputs for High Speed A/D Converters  (pdf, 207 kB)
High Speed ADCs Uses LVDS (Low-Voltage Differential Signaling) to Minimize Performance Limitations In ADC Applications When Providing High Speed Data Output
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-742: Frequency Domain Response of Switched-Capacitor ADCs  (pdf, 401 kB) Application Notes PDF
UG-294: Evaluating the AD9644/AD9641 Analog-to-Digital Converters  (pdf, 4934 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
Improve The Design Of Your Passive Wideband ADC Front-End Network
As converter technology improves, so does the demand to resolve very high intermediate frequencies (IFs) accurately at high speeds. This poses two challenges: the converter design itself and the front-end design that couples the signal content to the converter. Even if the converter itself is excellent, the front end must be able to preserve the signal quality too.
(Electronic Design, 3/26/2010)
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
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

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 AD9641

  • For differential RF/IF, we recommend the ADL5561 or the ultra low distortion ADL5562.
Recommended VGA's for the AD9641
  • For an independent, dual channel, digitally controlled VGA, we suggest the AD8370.
  • For an ultralow distortion, IF dual channel VGA, we recommend the AD8375.
Recommended Clock Drivers for the AD9641
  • For low jitter performance and integrated VCO, we recommend the AD9520-0 and AD9522-0.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9641 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9641BCPZ-155 Status: Production 32 ld LFCSP (5x5x.85mm) w/3.6exposed pad 32 Ind Tray, 490 $42.00 $35.70 Y  Material Info Notify Me Purchase
AD9641BCPZ-80 Status: Production 32 ld LFCSP (5x5x.85mm) w/3.6exposed pad 32 Ind Tray, 490 $31.00 $26.35 Y  Material Info Notify Me Purchase
AD9641BCPZRL7-155 Status: Production 32 ld LFCSP (5x5x.85mm) w/3.6exposed pad 32 Ind Reel, 1500 $42.00 $35.70 Y  Material Info Notify Me Purchase
AD9641BCPZRL7-80 Status: Production 32 ld LFCSP (5x5x.85mm) w/3.6exposed pad 32 Ind Reel, 1500 - $26.35 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.

AD9641 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9641-155KITZ Status: Production Evaluation Board $900.00 Yes -
AD9641-80KITZ Status: Production Evaluation Board $900.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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