AD9680:  14-Bit, 1000 MSPS JESD204B, Dual Analog-to-Digital Converter

Product Details

Product Status:Recommended for New Designs

The AD9680 is a dual, 14-bit, 1 GSPS 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.

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 2GHz.
  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. 9mm x 9mm 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

FEATURES and BENEFITS

  • JESD204B (subclass 1) coded serial digital outputs
  • 1.65 W total power per channel at 1 GSPS (default settings)
  • SFDR = 85 dBFS at 340 MHz,
    80 dBFS at 1 GHz
  • SNR = 65.3 dBFS at 340 MHz (AIN = −1.0 dBFS), 61.4 dBFS at 1 GHz)
  • ENOB = 10.8 bits at 10 MHz
  • DNL = ±0.5 LSB
    INL = ±2.5 LSB
  • Noise density = −154 dBFS/Hz at 1 GSPS
  • 1.25V, 2.5V and 3.3V dc supply operation
  • No missing codes
  • Internal ADC voltage reference
  • Flexible input range and termination impedance
    1.46 V p-p to 1.94 V p-p (1.70 V p-p nominal)
    400 Ω, 200 Ω, 100 Ω, and 50 Ω differential
  • See data sheet for additional features

Functional Block Diagram for AD9680

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD9680 MATLAB Model  (zip, 845 kB) Design Tool ZIP
AD9680 S-Parameters  (zip, 459 kB) S-Parameters ZIP

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 Differential Driver Amplifiers for the AD9680
  • 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 the AD9680
  • For high performance, step-down switching regulators requiring high efficiency and design flexibility, we recommend the ADP2164, 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.

Were these recommendations helpful?

SampleSample & Buy

Price, packaging, availability

AD9680 Model Options
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.

AD9680/AD9234 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD9234-1000EBZ Status: Production 12-BIT, 1000 MSPS JESD204B, Dual Analog to Digital Converter $895.00 Yes -
AD9680-1000EBZ Status: Production 14-BIT, 1000 MSPS JESD204B, Dual Analog to Digital Converter $995.00 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.

Check Inventory & Purchase

View Sales and Distribution Offices

沪ICP备09046653号
content here.
content here.

Review this Product

Close