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AD9640:  14-Bit, 80/105/125/150 MSPS, 1.8 V Dual Analog-to-Digital Converter

Product Details


The AD9640 is a dual 14-bit, 80/105/125/150 MSPS analog-to-digital converter (ADC). The AD9640 is designed to support communications applications where low cost, small size, and versatility are desired.

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

The AD9640 has several functions that simplify the automatic gain control (AGC) function in the system receiver. The fast detect feature allows fast overrange detection by outputting four bits of input level information with very short latency.

In addition, the programmable threshold detector allows moni-toring of the incoming signal power using the four fast detect bits of the ADC with very low latency. If the input signal level exceeds the programmable threshold, the fine upper threshold indicator goes high. Because this threshold is set from the four MSBs, the user can quickly turn down the system gain to avoid an overrange condition.

The second AGC-related function is the signal monitor. This block allows the user to monitor the composite magnitude of the incoming signal, which aids in setting the gain to optimize the dynamic range of the overall system.

The ADC output data can be routed directly to the two external 14-bit output ports. These outputs can be set from 1.8 V to 3.3 V CMOS or 1.8 V LVDS.

Flexible power-down options allow significant power savings, when desired.

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

The AD9640 is available in a 64-lead LFCSP and is specified over the industrial temperature range of −40°C to +85°C.

Product Highlights

  1. Integrated dual 14-bit, 80/105/125/150 MSPS ADC.
  2. Fast overrange detect and signal monitor with serial output.
  3. Signal monitor block with dedicated serial output mode.
  4. Proprietary differential input that maintains excellent SNR performance for input frequencies up to 450 MHz.
  5. Operation from a single 1.8 V supply and a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
  6. A standard serial port interface that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock DCS, power-down, and voltage reference mode.
  7. Pin compatibility with the AD9627, AD9627-11, and the AD9600 for a simple migration from 14 bits to 12 bits, 11 bits, or 10 bits.

Applications

  • Communications
  • Diversity radio systems
  • Multimode digital receivers
    GSM, EDGE, WCDMA, LTE,
    CDMA2000, WiMAX, TD-SCDMA
  • I/Q demodulation systems
  • Smart antenna systems
  • General-purpose software radios
  • Broadband data applications

FEATURES and BENEFITS

  • SNR = 71.8 dBc (72.8 dBFS) to 70 MHz @ 125 MSPS
  • SFDR = 85 dBc to 70 MHz @ 125 MSPS
  • Low power: 750 mW @ 125 MSPS
  • SNR = 71.6 dBc (72.6 dBFS) to 70 MHz @ 150 MSPS
  • SFDR = 84 dBc to 70 MHz @ 150 MSPS
  • Low power: 820 mW @ 150 MSPS
  • 1.8 V analog supply operation
  • 1.8 V to 3.3V CMOS output supply or 1.8 V LVDS output supply
  • Integer 1 to 8 input clock divider
  • IF sampling frequencies to 450 MHz
  • Internal ADC voltage reference
  • Integrated ADC sample-and-hold inputs
  • Flexible analog input range: 1 V p-p to 2 V p-p
  • Please see data sheet for additional features

Functional Block Diagram for AD9640

Documentation

Title Content Type File Type
AD9640: 14-Bit, 80/105/125/150 MSPS, 1.8 V Dual Analog-to-Digital Converter Data Sheet (Rev B, 12/2009) (pdf, 1448 kB) Data Sheets PDF
AN-1234: Interfacing the ADL5534 Dual IF Gain Block to the AD9640 High Speed ADC  (pdf, 208 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-737: How ADIsimADC Models an ADC  (pdf, 373 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-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-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-851: A WiMax Double Downconversion IF Sampling Receiver Design  (pdf, 262 kB) Application Notes PDF
AN-742: Frequency Domain Response of Switched-Capacitor ADCs  (pdf, 401 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
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
Matching An ADC To A Transformer
by Rob Reeder, Analog Devices, Inc.
(Microwaves & RF, 7/2007)
Technical Articles HTML
Data Converter Function Can Help Solve Cost and Size Design Challenges in 3G and 4G Wireless Infrastructure
(Analog Dialogue, Vol. 41, October 2007)
Analog Dialogue HTML
Dual 14-Bit ADC Speeds Up to WiMAX
(Electronicstalk, 12/20/2006)
Product Reviews HTML
Dandy Dozen: Top Wireless Products of 2006
(Wireless Net DesignLine, 1/3/2007)
Product Reviews HTML
Dual 14-Bit ADC Supports 3G and WiMAX Basestations
(eeProductCenter, 12/18/2006)
Product Reviews HTML
Dual 14-Bit 150-Msample/s ADC Provides AGC Input For Receivers
(Electronic Design, 1/18/2007)
Product Reviews HTML
Leading Inside Advertorials: Data Converter Function Can Help Solve Cost and Size Design Challenges in 3G and 4G Wireless Infrastructure  (pdf, 94 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
AD9640 IBIS Models 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 ADC Drivers for the AD9640

  • For AC-coupled applications, we suggest the AD8352.
  • For an IF amplifier driver, we recommend the ADL5534.
Recommended Clock Drivers for the AD9640 Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9640 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD80192ABCPZ-155 Status: Production 64 ld LFCSP (9x9mm, 7.10 exposed pad) 64 Ind Tray, 260 - - Y  Material Info Notify Me Contact ADI
AD9640ABCPZ-105 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Tray, 260 $73.22 $62.24 Y  Material Info Notify Me Purchase
AD9640ABCPZ-125 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Tray, 260 $87.51 $74.38 Y  Material Info Notify Me Purchase
AD9640ABCPZ-150 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Tray, 260 $116.08 $98.67 Y  Material Info Notify Me Purchase
AD9640ABCPZ-80 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Tray, 260 $44.65 $37.95 Y  Material Info Notify Me Purchase
AD9640ABCPZRL7-105 Status: Last Time Buy 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Reel, 750 $73.22 $62.24 Y  Material Info PDN Purchase
AD9640ABCPZRL7-125 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Reel, 750 $87.51 $74.38 Y  Material Info Notify Me Purchase
AD9640ABCPZRL7-80 Status: Production 64 ld LFCSP (9x9mm, 7.5mm exposed pad) 64 Ind Reel, 750 $44.65 $37.95 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.

AD9640 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9640-105EBZ Status: Production Evaluation Board $202.40 Yes -
AD9640-125EBZ Status: Production Evaluation Board $202.40 Yes -
AD9640-150EBZ Status: Production Evaluation Board $202.40 Yes -
AD9640-80EBZ Status: Production Evaluation Board $202.40 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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