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AD9246:  14-Bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V Analog-to-Digital Converter

Product Details


The AD9246 is a monolithic, single 1.8 V supply, 14-bit, 80 MSPS/ 105 MSPS/125 MSPS analog-to-digital converter (ADC), featuring a high performance sample-and-hold amplifier (SHA) and on-chip voltage reference. The product uses a multistage differential pipeline architecture with output error correction logic to provide 14-bit accuracy at 125 MSPS data rates and guarantees no missing codes over the full operating temperature range.

The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and offsets, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available ADCs, the AD9246 is suitable for applications in communications, imaging, and medical ultrasound.

A differential clock input controls all internal conversion cycles. A 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 formats. A data output clock (DCO) is provided to ensure proper latch timing with receiving logic.

The AD9246 is available in a 48-lead LFCSP_VQ and is specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

  1. The AD9246 operates from a single 1.8 V power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families.
  2. The patented SHA input maintains excellent performance for input frequencies up to 225 MHz.
  3. The clock DCS maintains overall ADC performance over a wide range of clock pulse widths.
  4. A standard serial port interface 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.
  5. The AD9246 is pin-compatible with the AD9233, allowing a simple migration from 12 bits to 14 bits.

Applications

  • Ultrasound equipment
  • IF sampling in communications receivers IS-95, CDMA-One, IMT-2000
  • Battery-powered instruments
  • Hand-held scopemeters
  • Low cost digital oscilloscopes

FEATURES and BENEFITS

  • 1.8 V analog supply operation
  • 1.8 V to 3.3 V output supply
  • SNR = 71.7 dBc (72.7 dBFS) to 70 MHz input
  • SFDR = 85 dBc to 70 MHz input
  • Low power: 395 mW @ 125 MSPS
  • Differential input with 650 MHz bandwidth
  • On-chip voltage reference and sample-and-hold amplifier
  • DNL = ±0.4 LSB
  • Flexible analog input: 1 V p-p to 2 V p-p range
  • Offset binary, Gray code, or twos complement data format
  • Data output clock and clock duty cycle stabilizer
  • Serial port control
    - Built-in selectable digital test pattern generation
    - Programmable clock and data alignment

Functional Block Diagram for AD9246

Documentation

Title Content Type File Type
AD9246: 14-Bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V Analog-to-Digital Converter Data Sheet (Rev A, 08/2006) (pdf, 1221 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-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-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
CN-0051: Driving the AD9233/9246/9254 ADCs in AC-Coupled Baseband Applications  (pdf, 111 kB) Circuit Note PDF
CN-0002: Using the AD8376 VGA to Drive Wide Bandwidth ADCs for High IF AC-Coupled Applications  (pdf, 128 kB) Circuit Note PDF
UG-173: High Speed ADC USB FIFO Evaluation Kit (HSC-ADC-EVALB-DCZ)  (pdf, 774 kB) User Guides PDF
Ask The Application Engineer 36, Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?
(Analog Dialogue, Volume 41 February 2007)
Analog Dialogue HTML
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
14-bit ADC Touts Best-In-Class SFDR At Half The Power Draw
(eeProductCenter, 9/1/2006)
Product Reviews HTML
Data Converters Deliver High SFDR, SNR For Wireless Infrastructure Applications
(RFDesign, 9/29/2005)
Product Reviews HTML
Converters Deliver Specs for Wireless Apps
(eeProductCenter, 10/4/2005)
Product Reviews HTML
Analog Devices' Data Converters Deliver Specs For Wireless Infrastructure Applications
(Wireless Design Online, 9/19/2005)
Product Reviews HTML
WIRELESS: A/D Targets Picocell, Microcell Basestations
(EETimes, 9/26/2005)
Product Reviews HTML
SFDR: The New Mark of Excellence for Converters Targeting Wireless Apps
(EDN, 9/29/2005)
Product Reviews 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
AD9246 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

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Companion Products

Suggested Companion Products


Recommended Driver Amplifiers for the AD9246

  • For ultra low distortion, we suggest the AD8352.
  • For IF VGA applications, we suggest the AD8375.
Recommended Clock Drivers for the AD9246 Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9246 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9246BCPZ-105 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Tray, 260 $47.56 $40.43 Y  Material Info Notify Me Purchase
AD9246BCPZ-125 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Tray, 260 $57.74 $49.08 Y  Material Info Notify Me Purchase
AD9246BCPZ-80 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Tray, 260 $29.76 $25.30 Y  Material Info Notify Me Purchase
AD9246BCPZRL7-105 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Reel, 750 $47.56 $40.43 Y  Material Info Notify Me Purchase
AD9246BCPZRL7-125 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Reel, 750 $57.74 $49.08 Y  Material Info Notify Me Purchase
AD9246BCPZRL7-80 Status: Production 48 ld LFCSP (7x7mm w_4.1mm EP) 48 Ind Reel, 750 $29.76 $25.30 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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