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AD9648:  14-Bit, 125 MSPS/105 MSPS, 1.8 V Dual Analog-to-Digital Converter

Product Details

Product Status:Recommended for New Designs

The AD9648 is a monolithic, dual-channel, 1.8 V supply, 14-bit, 105 MSPS/125 MSPS analog-to-digital converter (ADC). It features a high performance sample-and-hold circuit and on-chip voltage reference. The product uses multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 125 MSPS data rates and to guarantee no missing codes over the full operating temperature range.

The ADC contains several features designed to maximize flexibility and minimize system cost, such as programmable clock and data alignment and programmable digital test pattern generation. The available digital test patterns include built-in deterministic and pseudorandom patterns, along with custom user-defined test patterns entered via the serial port interface (SPI).

A differential clock input controls all internal conversion cycles. An optional duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance.

The digital output data is presented in offset binary, Gray code, or twos complement format. A data output clock (DCO) is provided for each ADC channel to ensure proper latch timing with receiving logic. Output logic levels of 1.8 V CMOS or LVDS are supported. Output data can also be multiplexed onto a single output bus.

The AD9648 is available in a 64-lead RoHS compliant LFCSP and is specified over the industrial temperature range (−40°C to +85°C). This product is protected by a U.S. patent.

APPLICATIONS

  • Communications
  • Diversity radio systems
  • Multimode digital receivers
    GSM, EDGE, W-CDMA, LTE,
    CDMA2000, WiMAX, TD-SCDMA
  • I/Q demodulation systems
  • Smart antenna systems
  • Broadband data applications
  • Battery-powered instruments
  • Hand held scope meters
  • Portable medical imaging
  • Ultrasound
  • Radar/LIDAR

PRODUCT HIGHLIGHTS

  1. The AD9648 operates from a single 1.8 V analog power supply and features a separate digital output driver supply to accommodate 1.8 V CMOS or LVDS logic families.


  2. The patented sample-and-hold circuit maintains excellent performance for input frequencies up to 200 MHz and is designed for low cost, low power, and ease of use.


  3. A standard serial port interface supports various product features and functions, such as data output formatting, internal clock divider, power-down, DCO/data timing and offset adjustments.


  4. The AD9648 is packaged in a 64-lead RoHS compliant LFCSP that is pin compatible with the AD9650/AD9269/AD9268 16-bit ADC’s, the AD9258 14-bit ADC, the AD9628/AD9231 12-bit ADC’s, and the AD9608/AD9204 10-bit ADC’s, enabling a simple migration path between 10-bit and 16-bit converters sampling from 20 MSPS to 125 MSPS.

FEATURES and BENEFITS

  • 1.8 V analog supply operation
  • 1.8 V CMOS or LVDS outputs
  • SNR = 74.5 dBFS @ 70 MHz
  • SFDR = 91 dBc @ 70 MHz
  • Low power: 78 mW/channel ADC core @ 125 MSPS
  • Differential analog input with 650 MHz bandwidth
  • IF sampling frequencies to
    200 MHz
  • On-chip voltage reference and sample-and-hold circuit
  • 2 V p-p differential analog input
  • DNL = ±0.35 LSB
  • See data sheet for additional features

Functional Block Diagram for AD9648

Documentation

Title Content Type File Type
AD9648: 14-Bit, 125 MSPS/105 MSPS, 1.8 V Dual Analog-to-Digital Converter Data Sheet  (Rev 0, 08/2011) (pdf, 1119 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-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-803: Pin Compatible High Speed ADCs Simplify Design Tasks  (pdf, 356 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-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
AN-741: Little Known Characteristics of Phase Noise  (pdf, 1679 kB) Application Notes PDF
UG-003: Evaluating the AD9650/AD9268/AD9258/AD9251/AD9231/AD9204 Analog-to-Digital Converters  (pdf, 2699 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
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
AD9648/AD9628/AD9608 S-Parameters  (xls, 746 kB) S-Parameters XLS
AD9648 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 AD9648

  • For differential RF/IF, we recommend the ultra low distortion ADL5562.
Recommended IF Digital Variable Gain Amplifier for the AD9648
  • For a fully differential input and output DVGA in digital communications systems, we recommend the ADL5202 or the AD8376.
Recommended Clock Drivers for the AD9648
  • For low jitter performance and integrated VCO, we recommend one of the AD9520 or AD9522 family of selectable VCO frequencies.
  • For low jitter performance along with on chip PLL and VCO, we recommend the AD9523, AD9523-1 or the AD9524.
Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9648 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9648BCPZ-105 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Tray, 260 $49.75 $42.29 Y  Material Info Notify Me Purchase
AD9648BCPZ-125 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Tray, 260 $60.29 $51.25 Y  Material Info Notify Me Purchase
AD9648BCPZRL7-105 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Reel, 750 $49.75 $42.29 Y  Material Info Notify Me Purchase
AD9648BCPZRL7-125 Status: Production 64 ld LFCSP (9x9mm, 6.20mm exposed pad) 64 Ind Reel, 750 $60.29 $51.25 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.

AD9648 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9648-125EBZ Status: Production Evaluation Board $250.00 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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