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AD7984 датащи(PDF) 1 Page - Analog Devices |
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AD7984 датащи(HTML) 1 Page - Analog Devices |
1 / 24 page 18-Bit, 5 MSPS PulSAR Differential ADC Data Sheet AD7960 Rev. 0 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Throughput: 5 MSPS 18-bit resolution with no missing codes Excellent ac and dc performance Dynamic range: 100 dB SNR: 99 dB THD: −117 dB INL: ±0.8 LSB (typical), ±2 LSB (maximum) DNL: ±0.5 LSB (typical), ±0.99 LSB (maximum) True differential analog input voltage range: ±4.096 V or ±5 V Low power dissipation 46.5 mW at 5 MSPS with external reference buffer (echoed clock mode) 64.5 mW at 5 MSPS with internal reference buffer (echoed clock mode) 39 mW at 5 MSPS with external reference buffer (self clocked mode, CNV± in CMOS mode) SAR architecture No latency/pipeline delay External reference options: 2.048 V buffered to 4.096 V (internal reference buffer), 4.096 V, and 5 V Serial LVDS interface Self clocked mode Echoed clock mode LVDS or CMOS option for conversion control (CNV± signal) Operating temperature range of −40°C to +85°C 32-lead, 5mm × 5mm LFCSP (QFN) APPLICATIONS Digital imaging systems Digital X-rays Computed tomography IR cameras MRI gradient control High speed data acquisition Spectroscopy Test equipment FUNCTIONAL BLOCK DIAGRAM Figure 1. GENERAL DESCRIPTION The AD7960 is an 18-bit, 5 MSPS, charge redistribution successive approximation (SAR), analog-to-digital converter (ADC). The SAR architecture allows unmatched performance both in noise and in linearity. The AD7960 contains a low power, high speed, 18-bit sampling ADC, an internal conversion clock, and an internal reference buffer. On the CNV± edge, the AD7960 samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and 4.096 V and between 0 V and 5 V. The reference voltage is applied to the part externally. All conversion results are available on a single LVDS self clocked or echoed clock serial interface. The AD7960 is available in a 32-lead LFCSP (QFN) with operation specified from −40°C to +85°C. Table 1. Fast PulSAR® ADC Selection Input Type 1 MSPS to <2 MSPS 2 MSPS to 3 MSPS 5 MSPS to 6 MSPS 10 MSPS Differential,1 16-Bit AD7653 AD7985 AD7667 AD7980 AD7983 True Bipolar, 16-Bit AD7671 Differential,2 16-Bit AD7677 AD7621 AD7625 AD7626 AD7623 AD7622 AD7961 Differential,2 18-Bit AD7643 AD7641 AD7960 AD7982 AD7986 AD7984 1 Ground sense. 2 Antiphase. AD7960 CLOCK LOGIC SERIAL LVDS IN– IN+ REFIN REF VCM SAR ÷2 CNV+, CNV– EN0 D+, D– DCO+, DCO– CLK+, CLK– CAP DAC VDD1 VDD2 VIO EN1 EN2 EN3 GND |
Аналогичный номер детали - AD7984 |
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Аналогичное описание - AD7984 |
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