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AD7626BCPZ-RL7 Datasheet(PDF) 1 Page - Analog Devices

Part # AD7626BCPZ-RL7
Description  16-Bit, 10 MSPS, PulSAR Differential ADC
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7626BCPZ-RL7 Datasheet(HTML) 1 Page - Analog Devices

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16-Bit, 10 MSPS, PulSAR
Differential ADC
AD7626
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
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
©2009 Analog Devices, Inc. All rights reserved.
FEATURES
Throughput: 10 MSPS
SNR: 91.5 dB
16-bit no missing codes
INL: ±0.45 LSB
DNL: ±0.35 LSB
Power dissipation: 136mW
32-lead LFCSP (5 mm × 5 mm)
SAR architecture
No latency/no pipeline delay
16-bit resolution with no missing codes
Zero error: ±1LSB
Differential input range: ±4.096 V
Serial LVDS interface
Self-clocked mode
Echoed-clock mode
LVDS or CMOS option for conversion control (CNV signal)
Reference options
Internal: 4.096 V
External (1.2 V) buffered to 4.096 V
External: 4.096 V
APPLICATIONS
Digital imaging systems
Digital X-ray
Digital MRI
CCD and IR cameras
High speed data acquisition
High dynamic range telecommunications receivers
Spectrum analysis
Test equipment
FUNCTIONAL BLOCK DIAGRAM
AD7626
CLOCK
LOGIC
SERIAL
LVDS
IN–
IN+
REFIN
REF VCM
SAR
÷2
CNV+, CNV–
VIO
D+, D–
DCO+, DCO–
CLK+, CLK–
1.2V
BAND GAP
CAP
DAC
Figure 1.
GENERAL DESCRIPTION
The AD7626 is a 16-bit, 10 MSPS, charge redistribution
successive approximation register (SAR) based architecture
analog-to-digital converter (ADC). SAR architecture allows
unmatched performance both in noise (91.5 dB SNR) and in
linearity (±0.45 LSB INL). The AD7626 contains a high speed,
16-bit sampling ADC, an internal conversion clock, and an
internal buffered reference. On the CNV edge, it samples the
voltage difference between the IN+ and IN− pins. The voltages
on these pins swing in opposite phase between 0 V and REF.
The 4.096 V reference voltage, REF, can be generated internally
or applied externally.
All converted results are available on a single LVDS self-clocked
or echoed-clock serial interface, reducing external hardware
connections.
The AD7626 is housed in a 32-lead, 5 mm × 5 mm LFCSP with
operation specified from −40°C to +85°C.
Table 1. Fast PulSAR® ADC Selection
Input Type
Resolution (Bits)
1 MSPS to <2 MSPS
2 MSPS to 3 MSPS
6 MSPS
10 MSPS
Differential (Ground Sense)
16
AD7653
AD7667
AD7980
AD7983
True Bipolar
16
AD7671
Differential (Antiphase)
16
AD7677
AD7621
AD7625
AD7626
AD7623
AD7622
Differential (Antiphase)
18
AD7643
AD7641
AD7982
AD7984


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