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AD7982 датащи(PDF) 1 Page - Analog Devices

номер детали AD7982
подробное описание детали  18-Bit, 1 MSPS PulSAR 7 mW ADC in MSOP/LFCSP
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производитель  AD [Analog Devices]
домашняя страница  http://www.analog.com
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AD7982 датащи(HTML) 1 Page - Analog Devices

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18-Bit, 1 MSPS PulSAR 7 mW ADC in
MSOP/LFCSP
Data Sheet
AD7982
FEATURES
18-bit resolution with no missing codes
Throughput: 1 MSPS
Low power dissipation
4 mW at 1 MSPS (VDD only)
7 mW at 1 MSPS (total)
70 μW at 10 kSPS
INL: ±1 LSB typical, ±2 LSB maximum
Dynamic range: 99 dB typical
True differential analog input range: ±VREF
0 V to VREF with VREF between 2.5 V to 5.0 V
Allows use of any input range
Easy to drive with the ADA4941-1 or ADA4940-1
No pipeline delay
Single-supply 2.5 V operation with 1.8 V, 2.5 V, 3 V, and 5 V
logic interface
Proprietary serial interface SPI-/QSPI™/ MICROWIRE™-/
DSP-compatible1
Ability to daisy-chain multiple ADCs and busy indicator
10-Lead MSOP and 3 mm × 3 mm 10-Lead LFCSP
APPLICATIONS
Battery-powered equipment
Data acquisition systems
Medical instruments
Seismic data acquisition systems
FUNCTIONAL BLOCK DIAGRAM
AD7982
REF
GND
VDD
IN+
IN–
VIO
SDI
SCK
SDO
CNV
1.8V TO 5V
ADA4940-1/
ADA4941-1
3- OR 4-WIRE
INTERFACE
(SPI, CS
DAISY CHAIN)
2.5V TO 5V 2.5V
±10V, ±5V, ..
Figure 1.
GENERAL DESCRIPTION
The AD7982 is an 18-bit, successive approximation, analog-to-
digital converter (ADC) that operates from a single power supply,
VDD. The AD7982 contains a low power, high speed, 18-bit
sampling ADC and a versatile serial interface port. On the CNV
rising edge, the AD7982 samples the voltage difference between
the IN+ and IN− pins. The voltages on these pins usually swing
in opposite phases between 0 V and VREF. The reference voltage,
VREF, is applied externally and can be set independent of the
supply voltage, VDD. Its power scales linearly with throughput.
The serial peripheral interface (SPI)-compatible serial interface
also features the ability, using the SDI input, to daisy-chain
several ADCs on a single 3-wire bus and provides an optional
busy indicator. The AD7982 is compatible with 1.8 V, 2.5 V, 3 V,
and 5 V logic, using the separate VIO supply.
The AD7982 is available in a 10-lead MSOP or a 10-lead LFCSP
with operation specified from −40°C to +85°C.
Table 1. MSOP and LFCSP 14-/16-/18-Bit PulSAR® ADCs
Bits
100 kSPS
250 kSPS
400 kSPS
to 500 kSPS
≥1000 kSPS
181
AD7989-1
AD7691
AD7690
AD7982
AD7989-5
AD7984
161
AD7684
AD7687
AD7688
AD7915
AD7693
AD7916
162
AD7680
AD7685
AD7686
AD7980
AD7683
AD7694
AD7988-5
AD7983
AD7988-1
142
AD7940
AD7942
AD7946
1 True differential.
2 Pseudo differential.
1 Protected by U.S. Patent 6,703,961.
Rev. D
Document Feedback
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
©2007–2017 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Аналогичный номер детали - AD7982_17

производительномер деталидатащиподробное описание детали
logo
Analog Devices
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Аналогичное описание - AD7982_17

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