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AD10680

100 MSPS A/D Converter



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AD10680 pdf
Preliminary Technical Data
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16-Bit, 100 MSPS A/D Converter
AD10680
FEATURES
100 MSPS sample rate
SNR of 85 dBFS @10 MHz
SFDR of 85 dBFS @10 MHz
VSWR of 1:1.5
AC-coupled input signal conditioning
Enhanced signal-to-noise ratio
Differential ENCODE signal
LVDS output levels
Twos complement output data
APPLICATIONS
Communications test equipment
Radar and satellite subsystems
Phased array antennas—digital beams
Multichannel, multimode receivers
Secure communications
Wireless and wired communications
GENERAL DESCRIPTION
The AD10680 is a 16-bit analog-to-digital converter (ADC)
with a transformer-coupled, analog input and digital
postprocessing for enhanced signal-to-noise ratio (SNR). The
product operates at a 100 MSPS conversion rate with
outstanding dynamic performance. Internal filters can be
digitally selected for the appropriate bandwidth or externally
programmed.
The AD10680 requires 5.0 V analog, 3.3 V analog, 3.3 V digital,
2.5 V digital, and a 1.2V digital supply, and a differential encode
signal. No external reference is required.
Performance is rated over a 0°C to 60°C case temperature range.
FUNCTIONAL BLOCK DIAGRAM
ENCODE
AD10680
ADC
A
2
OVER RANGE
AIN
DIGITAL
POST
PROCESSING
32
D0 TO D15
ADC
B
2 DATA CLOCK
OUTPUT
ENCODE
Figure 1.
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate up to 100 MSPS.
2. Input signal conditioning with optimized dynamic
performance to 40 MHz.
3. Additional performance options are available, such as
increased SNR performance with digitally selectable input
bandwidths, digitally selectable full-scale input ranges, and
digitally selectable Nyquist zones. Contact sales for more
information.
Rev. PrA
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.



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AD10680 pdf
AD10680
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Product Highlights ........................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
DC Specifications ......................................................................... 3
REVISION HISTORY
6/06—Revision PrA: Initial Version
Preliminary Techwnwiwc.DaaltaDShaeteat4U.com
AC Specifications ..........................................................................4
Pin Configurations and Function Descriptions ............................5
Theory of Operation .........................................................................6
Input Stage......................................................................................6
Encoding the AD10680 ................................................................6
Analog and Digital Power Supplies.............................................6
Analog and Digital Grounding....................................................6
Rev. PrA | Page 2 of 8



Part Number AD10680
Description 100 MSPS A/D Converter
Maker Analog Devices - Analog Devices
Total Page 8 Pages
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