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Analog Devices Semiconductor Electronic Components Datasheet



AD13280

Dual Channel/ 12-Bit/ 80 MSPS A/D Converter with Analog Input Signal Conditioning



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AD13280 pdf
FEATURES
Dual 80 MSPS, minimum sample rate
Channel-to-channel matching, ±1% gain error
90 dB channel-to-channel isolation
DC-coupled signal conditioning
80 dB spurious-free dynamic range
Selectable bipolar inputs (±1 V and ±0.5 V ranges)
Integral single-pole, low-pass Nyquist filter
Twos complement output format
3.3 V compatible outputs
1.85 W per channel
Dual-Channel, 12-Bit, 80 MSPS ADC
with Analog Input Signal Conditioning
AD13280
APPLICATIONS
Radar processing (optimized for I/Q baseband operation)
Phased array receivers
Multichannel, multimode receivers
GPS antijamming receivers
Communications receivers
PRODUCT HIGHLIGHTS
1. Guaranteed sample rate of 80 MSPS.
2. Input signal conditioning; gain and impedance match.
3. Single-ended, differential, or off-module filter option.
4. Fully tested/characterized full channel performance.
FUNCTIONAL BLOCK DIAGRAM
AMP-IN-A-2 AMP-IN-A-1
AMP-IN-B-2 AMP-IN-B-1
AMP-OUT-A
A–IN
A+IN
DROUTA
D0A (LSB)
D1A
D2A
D3A
D4A
D5A
D6A
D7A
D8A
AD13280
VREF
DROUT
9 12
100OUTPUT TERMINATORS
TIMING
3
ENCODEA ENCODEA D9A D10A D11A
(MSB)
VREF
DROUT
12
100OUTPUT TERMINATORS
7
TIMING
5
D0B D1B D2B D3B D4B D5B D6B
(LSB)
Figure 1.
AMP-OUT-B
B+IN
B–IN
DROUTB
ENCODEB
ENCODEB
D11B (MSB)
D10B
D9B
D8B
D7B
Rev. C
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 ©2002–2008 Analog Devices, Inc. All rights reserved.



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AD13280
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Product Highlights ........................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
General Description ......................................................................... 3
Specifications..................................................................................... 4
Timing Diagram ........................................................................... 6
Absolute Maximum Ratings............................................................ 7
Explanation of Test Levels ........................................................... 7
ESD Caution.................................................................................. 7
Pin Configuration and Function Descriptions............................. 8
Typical Performance Characteristics ........................................... 10
Terminology .................................................................................... 12
REVISION HISTORY
4/08—Rev. B to Rev. C
Updated Outline Dimensions ....................................................... 25
Changes to the Ordering Guide.................................................... 26
11/05—Rev. A to Rev. B
Updated Format..................................................................Universal
Changes to Features and Product Highlights ............................... 1
Changes to General Description .................................................... 3
Changes to Table 1............................................................................ 4
Changes to Figure 3.......................................................................... 8
Changes to Theory of Operation.................................................. 14
Changes to Equation 1 ................................................................... 15
Changes to Table 5.......................................................................... 18
Changes to Figure 21...................................................................... 19
Changes to Figure 22...................................................................... 20
Changes to Figure 23...................................................................... 21
Changes to Figure 28 and Figure 29............................................. 24
Updated Outline Dimensions ....................................................... 25
Changes to the Ordering Guide.................................................... 26
Input and Output Stages................................................................ 13
Theory of Operation ...................................................................... 14
Using the Single-Ended Input .................................................. 14
Using the Differential Input...................................................... 14
Applications Information .............................................................. 15
Encoding the AD13280 ............................................................. 15
Jitter Consideration.................................................................... 15
Power Supplies ............................................................................ 16
Output Loading .......................................................................... 16
Evaluation Board ............................................................................ 17
Layout Information.................................................................... 17
Bill of Materials List for Evaluation Board.............................. 24
Outline Dimensions ....................................................................... 25
Ordering Guide .......................................................................... 26
8/02—Rev. 0 to Rev. A
Edits to Specifications .......................................................................2
Packages Updated........................................................................... 19
Rev. C | Page 2 of 28



Part Number AD13280
Description Dual Channel/ 12-Bit/ 80 MSPS A/D Converter with Analog Input Signal Conditioning
Maker Analog Devices - Analog Devices
Total Page 28 Pages
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