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AD7916BRMZ Folha de dados(PDF) 1 Page - Analog Devices |
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AD7916BRMZ Folha de dados(HTML) 1 Page - Analog Devices |
1 / 26 page 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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