Analog-to-Digital Converter. AD9251 Datasheet

AD9251 Converter. Datasheet pdf. Equivalent

Part AD9251
Description 1.8 V Dual Analog-to-Digital Converter
Feature Data Sheet 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter AD9251 .
Manufacture Analog Devices
Datasheet
Download AD9251 Datasheet

Data Sheet 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V D AD9251 Datasheet
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AD9251
Data Sheet
14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS,
1.8 V Dual Analog-to-Digital Converter
AD9251
FEATURES
1.8 V analog supply operation
1.8 V to 3.3 V output supply
SNR
74.3 dBFS at 9.7 MHz input
71.5 dBFS at 200 MHz input
SFDR
93 dBc at 9.7 MHz input
80 dBc at 200 MHz input
Low power
33 mW per channel at 20 MSPS
73 mW per channel at 80 MSPS
Differential input with 700 MHz bandwidth
On-chip voltage reference and sample-and-hold circuit
2 V p-p differential analog input
DNL = ±0.45 LSB
Serial port control options
Offset binary, gray code, or twos complement data format
Optional clock duty cycle stabilizer
Integer 1-to-8 input clock divider
Data output multiplex option
Built-in selectable digital test pattern generation
Energy-saving power-down modes
Data clock out with programmable clock and data
alignment
APPLICATIONS
Communications
Diversity radio systems
Multimode digital receivers
GSM, EDGE, W-CDMA, LTE, CDMA2000, WiMAX, TD-SCDMA
I/Q demodulation systems
Smart antenna systems
Battery-powered instruments
Hand held scope meters
Portable medical imaging
Ultrasound
Radar/LIDAR
FUNCTIONAL BLOCK DIAGRAM
AVDD
GND
SDIO SCLK CSB
VIN+A
VIN–A
VREF
SENSE
VCM
RBIAS
VIN–B
VIN+B
REF
SELECT
SPI
ADC
PROGRAMMING DATA
AD9251
ADC
DIVIDE DUTY CYCLE
1 TO 8 STABILIZER
MODE
CONTROLS
ORA
D13A
D0A
DCOA
DRVDD
ORB
D13B
D0B
DCOB
CLK+ CLK–
SYNC
DCS
Figure 1.
PDWN DFS OEB
PRODUCT HIGHLIGHTS
1. The AD9251 operates from a single 1.8 V analog power
supply and features a separate digital output driver supply
to accommodate 1.8 V to 3.3 V logic families.
2. The patented sample-and-hold circuit maintains excellent
performance for input frequencies up to 200 MHz and is
designed for low cost, low power, and ease of use.
3. A standard serial port interface supports various product
features and functions, such as data output formatting,
internal clock divider, power-down, DCO/DATA timing
and offset adjustments, and voltage reference modes.
4. The AD9251 is packaged in a 64-lead RoHS compliant
LFCSP that is pin compatible with the AD9268 16-bit
ADC, the AD9258 14-bit ADC, the AD9231 12-bit ADC,
and the AD9204 10-bit ADC, enabling a simple migration
path between 10-bit and 16-bit converters sampling from
20 MSPS to 125 MSPS.
Rev. B
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AD9251
AD9251* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
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Evaluation Kits
• AD9251 Evaluation Board
Documentation
Application Notes
• AN-1142: Techniques for High Speed ADC PCB Layout
• AN-742: Frequency Domain Response of Switched-
Capacitor ADCs
• AN-807: Multicarrier WCDMA Feasibility
• AN-808: Multicarrier CDMA2000 Feasibility
• AN-812: MicroController-Based Serial Port Interface (SPI)
Boot Circuit
• AN-827: A Resonant Approach to Interfacing Amplifiers to
Switched-Capacitor ADCs
• AN-878: High Speed ADC SPI Control Software
• AN-905: Visual Analog Converter Evaluation Tool Version
1.0 User Manual
• AN-935: Designing an ADC Transformer-Coupled Front
End
Data Sheet
• AD9251: 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS,
1.8 V Dual Analog-to-Digital Converter Data Sheet
User Guides
• UG-003: Evaluating the AD9650/AD9268/AD9258/
AD9251/AD9231/AD9204 Analog-to-Digital Converters
Tools and Simulations
• Visual Analog
• AD9251 IBIS Models
• AD9204/AD9231/AD9251 S-Parameter Data
Reference Materials
Product Selection Guide
• RF Source Booklet
Technical Articles
• Designing 1-ppm DAC Accuracy into Instrumentation
Applications - Part 1
• Designing 1-ppm DAC Accuracy into Instrumentation
Applications - Part 2
• Improve The Design Of Your Passive Wideband ADC
Front-End Network
• MS-2210: Designing Power Supplies for High Speed ADC
Design Resources
• AD9251 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all AD9251 EngineerZone Discussions
Sample and Buy
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Technical Support
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