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AD7916BRMZ Folha de dados(PDF) 1 Page - Analog Devices

Nome de Peças AD7916BRMZ
Descrição Electrónicos  16-Bit, 1 MSPS/500 kSPS Differential PulSAR ADCs
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Página de início  http://www.analog.com
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16-Bit, 1 MSPS/500 kSPS
Differential PulSAR ADCs
Data Sheet
AD7915/AD7916
Rev. 0
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
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
FEATURES
Low power dissipation
AD7915
4 mW at 1 MSPS (VDD only)
7 mW at 1 MSPS (total)
AD7916
2 mW at 500 kSPS (VDD only)
3.7 mW at 500 kSPS (total)
16-bit resolution with no missing codes
Throughput: 1 MSPS (AD7915)/500 kSPS (AD7916)
INL: ±0.4 LSB typical, ±1 LSB maximum
SNR: 94 dB at 1 kHz, VREF = 5 V
SINAD: 93.5 dB at 1 kHz, VREF = 5 V
THD: −118.5 dB at 1 kHz
Dynamic range: 95.5 dB, VREF = 5 V
True differential analog input range: ±VREF
0 V to VREF with VREF between 2.4 V and 5.1 V
No pipeline delay
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic
interface
Proprietary serial interface: SPI-/QSPI-/MICROWIRE™-/DSP-
compatible1
Ability to daisy-chain multiple ADCs
10-lead packages: MSOP and 3 mm × 3 mm LFCSP
APPLICATIONS
Battery-powered equipment
Data acquisition systems
Medical instruments
Seismic data acquisition systems
GENERAL DESCRIPTION
The AD7915/AD7916 are 16-bit, successive approximation,
analog-to-digital converters (ADCs) that operate from a single
power supply, VDD. They contain a low power, high speed,
16-bit sampling ADC and a versatile serial interface port. On
the CNV rising edge, the AD7915/AD7916 sample the voltage
difference between the IN+ and IN− pins. The voltages on these
pins typically swing in opposite phases between 0 V and VREF.
The reference voltage, REF, is applied externally and can be set
independent of the supply voltage, VDD. The power consumption
of the AD7915/AD7916 scales linearly with throughput.
The AD7915/AD7916 are serial peripheral interface (SPI)
compatible, which features the ability, using the SDI input, to
daisy-chain several ADCs on a single 3-wire bus. They are
compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic using the
separate VIO supply.
The AD7915/AD7916 are available in a 10-lead MSOP or a
10-lead LFCSP with operation specified from −40°C to +125°C.
Table 1. MSOP, LFCSP 14-/16-/18-Bit PulSAR® ADCs
Bits
100 kSPS
250 kSPS
400 kSPS to 500 kSPS
≥1000 kSPS
181
AD7989-12
AD76912
AD76902
AD79822
AD7989-52
AD79842
161
AD7684
AD76872
AD76882
AD79152
AD76932
AD79162
163
AD7680
AD76852
AD76862
AD79802
AD7683
AD7694
AD7988-52
AD79832
AD7988-12
143
AD7940
AD79422
AD79462
1 True differential.
2 Pin-for-pin compatible.
3 Pseudo differential.
TYPICAL APPLICATIONS CIRCUIT
REF
GND
VDD
IN+
IN–
VIO
SDI/CS
SCK
SDO
CNV
1.8V TO 5.5V
ADA4940-1
3- OR 4-WIRE
INTERFACE
(SPI, CS,
DAISY CHAIN)
2.5V TO 5V
2.5V
±10V, ±5V, ..
AD7915/
AD7916
Figure 1.
1 Protected by U.S. Patent 6,703,961.


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