AD9680

14-Bit, 1 GSPS/820 MSPS/500 MSPS JESD204B, Dual Analog-to-Digital Converter

Manufactured by:

Product Details

The AD9680 is a dual, 14-bit, 1 GSPS/500 MSPS analog-to-digital converter (ADC). The device has an on-chip buffer and sample-and-hold circuit designed for low power, small size, and ease of use. This device is designed for sampling wide bandwidth analog signals of up to 2 GHz. The AD9680 is optimized for wide input bandwidth, high sampling rate, excellent linearity, and low power in a small package.

The dual ADC cores feature a multistage, differential pipelined architecture with integrated output error correction logic. Each ADC features wide bandwidth inputs supporting a variety of user-selectable input ranges. An integrated voltage reference eases design considerations.

The analog input and clock signals are differential inputs. Each ADC data output is internally connected to two digital downconverters (DDCs). Each DDC consists of four cascaded signal processing stages: a 12-bit frequency translator (NCO), and four half-band decimation filters. The DDCs are bypassed by default.

In addition to the DDC blocks, the AD9680 has several functions that simplify the automatic gain control (AGC) function in the communications receiver. The programmable threshold detector allows monitoring of the incoming signal power using the fast detect output bits of the ADC. If the input signal level exceeds the programmable threshold, the fast detect indicator goes high. Because this threshold indicator has low latency, the user can quickly turn down the system gain to avoid an overrange condition at the ADC input.

Users can configure the Subclass 1 JESD204B-based high speed serialized output in a variety of one-, two-, or four-lane configurations, depending on the DDC configuration and the acceptable lane rate of the receiving logic device. Multiple device synchronization is supported through the SYSREF± and SYNCINB± input pins.

The AD9680 has flexible power-down options that allow significant power savings when desired. All of these features can be programmed using a 1.8 V to 3.3 V capable 3-wire SPI.

The AD9680 is available in a Pb-free, 64-lead LFCSP and is specified over the −40°C to +85°C industrial temperature range. This product is protected by a U.S. patent.

Product Highlights

  1. Wide full power bandwidth supports IF sampling of signals up to 2 GHz.
  2. Buffered inputs with programmable input termination eases filter design and implementation.
  3. Four integrated wideband decimation filters and numerically controlled oscillator (NCO) blocks supporting multiband receivers.
  4. Flexible serial port interface (SPI) controls various product features and functions to meet specific system requirements.
  5. Programmable fast overrange detection.
  6. 9 mm × 9 mm, 64-lead LFCSP.

Applications

  • Communications
  • Diversity multiband, multimode digital receivers
    3G/4G, TD-SCDMA, W-CDMA, GSM, LTE
  • General-purpose software radios
  • Ultrawideband satellite receivers
  • Instrumentation
  • Radars
  • Signals intelligence (SIGINT)
  • DOCSIS 3.0 CMTS upstream receive paths
  • HFC digital reverse path receivers

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits

X +

EVAL-AD9680 Circuit Diagram

Product Details

The AD9680-1000EBZ/AD9234-1000EBZ/AD9690-1000EBZ is an evaluation board for the AD9680-1000 14-Bit, 1000MSPS JESD204B, Dual Analog-to-Digital Converter/ AD9234-1000 14-BIT, 1000 MSPS JESD204B, Dual Analog to Digital Converter/ AD9690-1000 14-Bit, 500 MSPS, 1 GSPS JESD204B, Analog-to-Digital Converter. This reference design provides all of the support circuitry required to operate the ADC in its various modes and configurations. It is designed to interface directly with the ADS7-V1EBZ data capture card, allowing users to download captured data for analysis. The Visual Analog software package, which is used to interface with the device's hardware, allows users to download captured data for analysis with a user-friendly graphical interface. The SPI Controller software package is also compatible with this hardware, and allows the user to access the SPI programmable features of the AD9680/AD9234/AD9690. The user guide wiki provides documentation and instructions to configure the device for performance evaluation in the lab.

The AD9680/AD9234/AD9690 data sheet provides additional information related to device configuration and performance, and should be consulted when using the evaluation board. All documents and Visual Analog and SPI Controller are available at the High Speed ADC Evaluation Boards page. For additional information or questions, please email highspeed.converters@analog.com

EQUIPMENT NEEDED
  • Analog signal source and antialiasing filter
  • Sample Clock Source
  • REFCLOCK source for FPGA receiver
  • PC running Windows 7, XP or Vista
  • USB 2.0 port recommended (USB 1.1 compatible)
  • AD9680-1000EBZ Evaluation Board
  • ADs7-v1EBZ FPGA Based Data Capture Board

AD-FMCDAQ2-EBZ Circuit Diagram

AD-FMCDAQ2-EBZ Photo

Product Details

The AD-FMCDAQ2-EBZ module is comprised of the AD9680 dual, 14-bit, 1.0 GSPS, JESD204B ADC, the AD9144 quad, 16-bit, 2.8 GSPS, JESD204B DAC, the AD9523-1 14-output, 1GHz clock, and power management components. It is clocked by an internally generated carrier platform via the FMC connector, comprising a completely self-contained data acquisition and signal synthesis prototyping platform. In an FMC footprint (84 mm × 69 mm), the module’s combination of wideband data conversion, clocking, and power closely approximates real-world hardware and software for system prototyping and design, with no compromise in signal chain performance.

Applications

  • Electronic test and measurement equipment
  • General-purpose software radios
  • Radar systems
  • Ultra wideband satellite receivers
  • Point-to-point communication systems

Tools & Simulations

X +

Power Tools

IBIS Models

S-Parameters

Product Recommendations

X +
AD9680 Companion parts

Recommended Differential Driver Amplifiers

  • For a low output noise, RF differential amplifier for driving heavy loads , we recommend the ADA4961 .
  • For ultrahigh dynamic range, low distortion and low noise , we recommend the ADL5565 .

Recommended Power Products

  • For high performance, step-down switching regulators requiring high efficiency and design flexibility , we recommend the ADP2164 or the ADP2384 .
  • For a low dropout linear regulator,with adjustable output voltage settings , we recommend the ADP1741 .

Recommended Power Solutions

  • For selecting voltage regulator products, use ADIsimPower.

Design Resources

X +

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

AD9680 Material Declaration
PCN-PDN Information Quality And Reliability Symbols and Footprints

Discussions

X+

Didn't find what you were looking for?

Sample & Buy

X+
Back
Check Inventory

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.


Price Table Help

 
Evaluation Boards Pricing displayed is based on 1-piece.
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.