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AD9265:  16-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Analog-to-Digital Converter

Product Details


The AD9265 is a 16-bit, 125 MSPS analog-to-digital converter (ADC). The AD9265 is designed to support communications applications where high performance combined with low cost, small size, and versatility is desired.

The ADC core features a multistage, differential pipelined architecture with integrated output error correction logic to provide 16-bit accuracy at 125 MSPS data rates and guarantees no missing codes over the full operating temperature range.

The ADC features a wide bandwidth differential sample-and- hold analog input amplifier supporting a variety of user-selectable input ranges. 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 AD9265 is suitable for applications in communications, instrumentation and medical imaging.

A differential clock input controls all internal conversion cycles. A duty cycle stabilizer provides the means to compensate for vari- ations in the ADC clock duty cycle, allowing the converters to maintain excellent performance over a wide range of input clock duty cycles. An integrated voltage reference eases design consid- erations.

The ADC output data format is either parallel 1.8 V CMOS or LVDS (DDR). A data output clock is provided to ensure proper latch timing with receiving logic.

Programming for setup and control is accomplished using a 3-wire SPI-compatible serial interface. Flexible power-down options allow significant power savings, when desired. An optional on- chip dither function is available to improve SFDR performance with low power analog input signals.

The AD9265 is available in a Pb-free, 48-lead LFCSP and is speci- fied over the industrial temperature range of −40°C to +85°C.

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

Product Highlights
  1. On-chip dither option for improved SFDR performance with low power analog input.
  2. Proprietary differential input that maintains excellent SNR performance for input frequencies up to 300 MHz.
  3. Operation from a single 1.8 V supply and a separate digital output driver supply accommodating 1.8 V CMOS or LVDS outputs.
  4. Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary, twos complement, or gray coding), enabling the clock duty cycle stabilizer, DCS, power-down, test modes, and voltage reference mode.
  5. Pin compatibility with the AD9255, allowing a simple migration from 16 bits down to 14 bits.

FEATURES and BENEFITS

  • SNR = 79.0 dBFS @ 70 MHz and 125 MSPS
  • SFDR = 93 dBc @ 70 MHz and 125 MSPS
  • Low power: 373 mW @ 125 MSPS
  • 1.8 V analog supply operation
  • 1.8 V CMOS or LVDS output supply
  • Integer 1-to-8 input clock divider
  • IF sampling frequencies to 300 MHz
  • −154.3 dBm/Hz small signal input noise with 200 Ω input impedance @ 70 MHz and 125 MSPS
  • Optional on-chip dither
  • Programmable internal ADC voltage reference
  • See data sheet for additional features

AD9265 Functional Block Diagram

Documentation

Title Content Type File Type
AD9265: 16-Bit, 125 MSPS/105 MSPS/80 MSPS, 1.8 V Analog-to-Digital Converter Data Sheet (Rev C, 08/2013) (pdf, 530 kB) Data Sheets PDF
UG-074: Evaluating the AD9265/AD9255 Analog-to-Digital Converters  (pdf, 1446 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
The Differential-signal Advantage for Communications System Design
Understand how differential signal chains and architectures can improve system performance in challenging applications.
(RF Designline, 2/1/2010)
Technical Articles HTML
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
Peak High-speed Performance even at low power. Overview HTML
Analog-to-Digital Converter and Drivers ICs Solutions Bulletin, Volume 10, Issue 2  (pdf, 1358 kB) Solutions Bulletins PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD9255/AD9265 S-Parameters  (xls, 1329 kB) S-Parameters XLS
AD9265 IBIS Models IBIS Models HTML
AD9265 Native FMC Card / ML605 Xilinx Reference Design FPGA HDL 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 AD9265

  • For differential RF/IF, we recommend the ADL5561 or the ultra low distortion ADL5562.
Recommended VGA's for the AD9265
  • For an independent, dual channel, digitally controlled VGA, we suggest the AD8372.
  • For an ultralow distortion, IF dual channel VGA, we recommend the AD8376.
Recommended Clock Drivers for the AD9265
  • 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

AD9265 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9265BCPZ-105 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Tray, 260 $66.67 $56.67 Y  Material Info Notify Me Purchase
AD9265BCPZ-125 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Tray, 260 $76.47 $65.00 Y  Material Info Notify Me Purchase
AD9265BCPZ-80 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Tray, 260 $56.86 $48.33 Y  Material Info Notify Me Purchase
AD9265BCPZRL7-105 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Reel, 750 $66.67 $56.67 Y  Material Info Notify Me Purchase
AD9265BCPZRL7-125 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Reel, 750 $76.47 $65.00 Y  Material Info Notify Me Purchase
AD9265BCPZRL7-80 Status: Production 48 ld LFCSP (7x7x.85mm w/5.5mm Pad) 48 Ind Reel, 750 $56.86 $48.33 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.

AD9265 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9265-105EBZ Status: Production 16 bit 105 Msps Evaluation Board (Compatible with HSC-ADC-EVALCZ) $200.00 Yes -
AD9265-FMC-125EBZ Status: Production 16 bit 125 Msps Evaluation Board (FMC Compatible ) $399.00 Yes -
AD9265-125EBZ Status: Production 16 bit 125 Msps Evaluation Board (Compatible with HSC-ADC-EVALCZ) $200.00 Yes -
AD9265-80EBZ Status: Production 16 bit 80 Msps Evaluation Board (Compatible with HSC-ADC-EVALCZ) $200.00 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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