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Analog Devices - Serial LVDS 1.8 V ADC

Numéro de référence AD9287
Description Serial LVDS 1.8 V ADC
Fabricant Analog Devices 
Logo Analog Devices 





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AD9287 fiche technique
Data Sheet
FEATURES
4 ADCs integrated into 1 package
133 mW ADC power per channel at 100 MSPS
SNR = 49 dB (to Nyquist)
ENOB = 7.85 bits
SFDR = 65 dBc (to Nyquist)
Excellent linearity
DNL = ±0.2 LSB (typical)
INL = ±0.2 LSB (typical)
Serial LVDS (ANSI-644, default)
Low power, reduced signal option (similar to IEEE 1596.3)
Data and frame clock outputs
295 MHz full-power analog bandwidth
2 V p-p input voltage range
1.8 V supply operation
Serial port control
Full-chip and individual-channel power-down modes
Flexible bit orientation
Built-in and custom digital test pattern generation
Programmable clock and data alignment
Programmable output resolution
Standby mode
APPLICATIONS
Medical imaging and nondestructive ultrasound
Portable ultrasound and digital beam-forming systems
Quadrature radio receivers
Diversity radio receivers
Tape drives
Optical networking
Test equipment
GENERAL DESCRIPTION
The AD9287 is a quad, 8-bit, 100 MSPS analog-to-digital con-
verter (ADC) with an on-chip sample-and-hold circuit designed
for low cost, low power, small size, and ease of use. The product
operates at a conversion rate of up to 100 MSPS and is optimized
for outstanding dynamic performance and low power in
applications where a small package size is critical.
The ADC requires a single 1.8 V power supply and LVPECL-/
CMOS-/LVDS-compatible sample rate clock for full performance
operation. No external reference or driver components are
required for many applications.
The ADC automatically multiplies the sample rate clock for the
appropriate LVDS serial data rate. A data clock output (DCO) for
Rev. F
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Quad, 8-Bit, 100 MSPS,
Serial LVDS 1.8 V ADC
AD9287
FUNCTIONAL BLOCK DIAGRAM
AVDD
PDWN
DRVDD DRGND
VIN + A
VIN – A
VIN + B
VIN – B
VIN + C
VIN – C
VIN + D
VIN – D
VREF
SENSE
REFT
REFB
AD9287
T/H
T/H
T/H
T/H
PIPELINE
ADC
8
8
PIPELINE
ADC
PIPELINE
ADC
8
PIPELINE
ADC
8
SERIAL
LVDS
SERIAL
LVDS
SERIAL
LVDS
SERIAL
LVDS
REF
SELECT
+– 0.5V
SERIAL PORT
INTERFACE
DATA RATE
MULTIPLIER
D+A
D–A
D+B
D–B
D+C
D–C
D+D
D–D
FCO+
FCO–
DCO+
DCO–
RBIAS AGND CSB SDIO/ODM SCLK/DTP CLK+ CLK–
Figure 1.
capturing data on the output and a frame clock output (FCO)
for signaling a new output byte are provided. Individual-channel
power-down is supported and typically consumes less than
2 mW when all channels are disabled.
The ADC contains several features designed to maximize
flexibility and minimize system cost, such as programmable
clock and data alignment and programmable digital test pattern
generation. The available digital test patterns include built-in
deterministic and pseudorandom patterns, along with custom user-
defined test patterns entered via the serial port interface (SPI).
The AD9287 is available in an RoHS compliant, 48-lead LFCSP. It
is specified over the industrial temperature range of −40°C to
+85°C.
PRODUCT HIGHLIGHTS
1. Small Footprint. Four ADCs are contained in a small, space-
saving package.
2. Low power of 133 mW/channel at 100 MSPS.
3. Ease of Use. A data clock output (DCO) is provided that
operates at frequencies of up to 400 MHz and supports
double data rate (DDR) operation.
4. User Flexibility. The SPI control offers a wide range of flexible
features to meet specific system requirements.
5. Pin-Compatible Family. This includes the AD9219 (10-bit),
AD9228 (12-bit), and AD9259 (14-bit).
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2006–2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com

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