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AD9434-500EBZ Arkusz danych(PDF) 1 Page - Analog Devices

Numer części AD9434-500EBZ
Szczegółowy opis  12-Bit, 370 MSPS/500 MSPS, 1.8 V Analog-to-Digital Converter
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Strona internetowa  http://www.analog.com
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12-Bit, 370 MSPS/500 MSPS,
1.8 V Analog-to-Digital Converter
AD9434
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.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
©2011 Analog Devices, Inc. All rights reserved.
FEATURES
SNR = 65 dBFS at fIN up to 250 MHz at 500 MSPS
ENOB of 10.5 bits at fIN up to 250 MHz at 500 MSPS (−1.0 dBFS)
SFDR = 78 dBc at fIN up to 250 MHz at 500 MSPS (−1.0 dBFS)
Integrated input buffer
Excellent linearity
DNL = ±0.5 LSB typical
INL = ±0.6 LSB typical
LVDS at 500 MSPS (ANSI-644 levels)
1 GHz full power analog bandwidth
On-chip reference, no external decoupling required
Low power dissipation
690 mW at 500 MSPS—LVDS SDR mode
660 mW at 500 MSPS—LVDS DDR mode
Programmable (nominal) input voltage range
1.18 V p-p to 1.6 V p-p, 1.5 V p-p nominal
1.8 V analog and digital supply operation
Selectable output data format (offset binary, twos
complement, Gray code)
Clock duty cycle stabilizer
Integrated data clock output with programmable clock and
data alignment
APPLICATIONS
Wireless and wired broadband communications
Cable reverse path
Communications test equipment
Radar and satellite subsystems
Power amplifier linearization
GENERAL DESCRIPTION
The AD9434 is a 12-bit monolithic sampling analog-to-digital
converter (ADC) optimized for high performance, low power,
and ease of use. The part operates at up to a 500 MSPS
conversion rate and is optimized for outstanding dynamic
performance in wideband carrier and broadband systems. All
necessary functions, including a sample-and-hold and voltage
reference, are included on the chip to provide a complete signal
conversion solution. The VREF pin can be used to monitor the
internal reference or provide an external voltage reference
(external reference mode must be enabled through the SPI
port).
The ADC requires a 1.8 V analog voltage supply and a differen-
tial clock for full performance operation. The digital outputs are
LVDS (ANSI-644) compatible and support twos complement,
offset binary format, or Gray code. A data clock output is
available for proper output data timing.
FUNCTIONAL BLOCK DIAGRAM
AGND
PWDN
VREF
AVDD
VIN+
VIN–
CML
TRACK-AND-HOLD
REFERENCE
ADC
CORE
OUTPUT
STAGING
LVDS
CLK+
CLK–
CLOCK
MANAGEMENT
SERIAL PORT
SCLK/DFS
SDIO
CSB
DCO–
DCO+
OR–
OR+
D11± TO D0±
DRGND
DRVDD
12
12
AD9434
Figure 1.
Fabricated on an advanced BiCMOS process, the AD9434 is
available in a 56-lead LFCSP, specified over the industrial
temperature range (−40°C to +85°C). This part is protected
under a U.S. patent.
PRODUCT HIGHLIGHTS
1.
High Performance.
Maintains 65 dBFS SNR at 500 MSPS with a 250 MHz input.
2.
Low Power.
Consumes only 660 mW at 500 MSPS.
3.
Ease of Use.
LVDS output data and output clock signal allow interface
to FPGA technology. The on-chip reference and sample-
and-hold provide flexibility in system design. Use of a
single 1.8 V supply simplifies system power supply design.
4.
Serial Port Control.
Standard serial port interface supports various product
functions, such as data formatting, power-down, gain
adjust, and output test pattern generation.
5.
The AD9434 is pin compatible with the AD9230, and can
be substituted in many applications with minimal design
changes.


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