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AD9434:  12-Bit, 370 MSPS/500 MSPS, 1.8 V Analog-to-Digital Converter

Product Details

Product Status:Recommended for New Designs

The AD9434 is a 12-bit monolithic sampling analog-to-digital converter (ADC) optimized for high performance, low power, and ease of use. The part operates at up to a 500 MSPS conversion rate and is optimized for outstanding dynamic performance in wideband carrier and broadband systems. All necessary functions, including a sample-and-hold and voltage reference, are included on the chip to provide a complete signal conversion solution. The VREF pin can be used to monitor the internal reference or provide an external voltage reference (external reference mode must be enabled through the SPI port).

The ADC requires a 1.8 V analog voltage supply and a differential clock for full performance operation. The digital outputs are LVDS (ANSI-644) compatible and support twos complement, offset binary format, or Gray code. A data clock output is available for proper output data timing.

Fabricated on an advanced BiCMOS process, the AD9434 is available in a 56-lead LFCSP, specified over the industrial temperature range (−40°C to +85°C). This part is protected under U.S. and international patents.


  • Wireless and wired broadband communications
  • Cable reverse path
  • Communications test equipment
  • Radar and satellite subsystems
  • Power amplifier linearization

  1. High Performance.
    Maintains 65 dBFS SNR at 500 MSPS with a 250 MHz input.
  2. Low Power.
    Consumes only 660 mW at 500 MSPS.
  3. Ease of Use.
    LVDS output data and output clock signal allow interface to current FPGA technology. The on-chip reference and sample and hold provide flexibility in system design. Use of a single 1.8 V supply simplifies system power supply design.
  4. Serial Port Control.
    Standard serial port interface supports various product functions, such as data formatting, power-down, gain adjust, and output test pattern generation.
  5. The AD9434 is pin compatible with the AD9230, and can be substituted in many applications with minimal design changes.


  • SNR = 65 dBFS at fIN up to
    250 MHz at 500 MSPS
  • ENOB of 10.5 bits at fIN up to
    250 MHz at 500 MSPS
    (−1.0 dBFS)
  • SFDR = −78 dBc at fIN up to
    250 MHz at 500 MSPS
    (−1.0 dBFS)
  • Integrated input buffer
  • Excellent linearity
    -- DNL = ±0.5 LSB typical
    -- INL = ±0.6 LSB typical
  • LVDS at 500 MSPS
    (ANSI-644 levels)
  • 1 GHz full power analog bandwidth
  • Pin Compatible with AD9230, ADC
  • See datasheet for additional features

Functional Block Diagram for AD9434


Title Content Type File Type
AD9434: 12-Bit, 370 MSPS/500 MSPS, 1.8 V Analog-to-Digital Converter Data Sheet (Rev B, 02/2013) (pdf, 1002 kB) Data Sheets PDF
AN-1142: Techniques for High Speed ADC PCB Layout  (pdf, 392 kB) Application Notes PDF
AN-932: Power Supply Sequencing  (pdf, 95 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-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-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
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter  (pdf, 291 kB) Application Notes PDF
CN-0238: High Performance, 12-Bit, 500 MSPS Wideband Receiver with Antialiasing Filter  (pdf, 199 kB) Circuit Note PDF
The Data Conversion Handbook Design Handbooks HTML
MT-031: Grounding Data Converters and Solving the Mystery of  (pdf, 144 kB) Tutorials PDF
MT-002: What the Nyquist Criterion Means to Your Sampled Data System Design  (pdf, 152 kB) Tutorials PDF
MT-001: Taking the Mystery out of the Infamous Formula, "SNR=6.02N + 1.76dB," and Why You Should Care  (pdf, 94 kB) Tutorials PDF
MT-075: Differential Drivers for High Speed ADCs Overview  (pdf, 183 kB) Tutorials PDF
UG-290: Evaluating the AD9434 and AD9484 Analog-to-Digital Converters  (pdf, 1766 kB) User Guides PDF
MS-2210: Designing Power Supplies for High Speed ADC  (pdf, 327 kB) Technical Articles PDF
MS-2124: Understanding AC Behaviors of High Speed ADCs  (pdf, 276 kB) Technical Articles PDF
Nine Often Overlooked ADC Specifications  (pdf, 445 kB)
Analog-to-digital converters (ADCs) have many specifications; some are more important for a given application than others. Understanding these specifications and controlling external devices affecting the ADC will lead to better performance.
Technical Articles PDF
Peak High-speed Performance even at low power. It's why more engineers choose ADI Data Converters. Solutions Bulletins HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
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
AD9434/AD9484 IBIS Model IBIS Models HTML
AD9434 Native FMC Card & ML605 Xilinx Reference Design (Wiki Site) Device Drivers 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 AD9434

  • For a fully differential input and output DVGA in digital communications systems, we recommend the ADL5201, the dual ADL5202 or the ADL5240.
Recommended Clock Drivers for the AD9434
  • For low jitter performance and integrated VCO, we recommend the AD9520-0 and AD9522-0.

  • For low jitter performance along with on chip PLL and VCO, we recommend the AD9523 and AD9524.
Recommended Power Solutions
  • For selecting voltage regulator products, use ADIsimPower.

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Price, packaging, availability

AD9434 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD9434BCPZ-370 Status: Production 56 ld LFCSP (8x8mm, 5.1mm exposed pad) 56 Ind Tray, 260 $100.00 $85.00 Y  Material Info Notify Me Purchase
AD9434BCPZ-500 Status: Production 56 ld LFCSP (8x8mm, 5.1mm exposed pad) 56 Ind Tray, 260 $147.00 $124.95 Y  Material Info Notify Me Purchase
AD9434BCPZRL7-370 Status: Production 56 ld LFCSP (8x8mm, 5.1mm exposed pad) 56 Ind Reel, 750 $100.00 $85.00 Y  Material Info Notify Me Purchase
AD9434BCPZRL7-500 Status: Production 56 ld LFCSP (8x8mm, 5.1mm exposed pad) 56 Ind Reel, 750 $147.00 $124.95 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.

AD9434 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
AD9434-FMC-500EBZ Status: Production Evaluation Board (FMC Compatible) $399.00 Yes -
AD9434-370EBZ Status: Production Evaluation Board (Compatible with HSC-ADC-EVALCZ) $250.00 Yes -
AD9434-500EBZ Status: Production Evaluation Board (Compatible with HSC-ADC-EVALCZ) $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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