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AD7981HRMZ датащи(PDF) 1 Page - Analog Devices |
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AD7981HRMZ датащи(HTML) 1 Page - Analog Devices |
1 / 25 page High Temperature, 16-Bit, 600 kSPS PulSAR® ADC Data Sheet AD7981 FEATURES Extreme high temperature operation Specified temperature range: −55°C to +175°C High performance 16-bit resolution with no missing codes 600 kSPS throughput with no latency/pipeline delay SNR: 91 dB typical at 1 kHz input frequency THD: −102 dB typical at 1 kHz input frequency INL: ±2.0 LSB maximum, DNL: ±0.9 LSB maximum Low power dissipation 2.25 mW typical at 600 kSPS (VDD only) 4.65 mW typical at 600 kSPS (total) 70 µW typical at 10 kSPS Small footprint 10-lead, 3 mm × 5 mm, monometallic wire bonding MSOP Pseudo differential analog input range 0 V to VREF with VREF between 2.4 V and 5.1 V Easy to use Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface SPI-/QSPI-/MICROWIRE-/DSP-compatible digital interface Daisy-chain multiple ADCs and busy indicator APPLICATIONS Downhole drilling and instrumentation Avionics Heavy industrial High temperature environments TYPICAL APPLICATION CIRCUIT AD7981 REF GND VDD IN+ IN– VIO SDI SCK SDO CNV 1.8V TO 5.0V 3- OR 4-WIRE INTERFACE (SPI, DAISY CHAIN, CS) 2.5V to 5.0V 2.5V 0V TO VREF Figure 1. GENERAL DESCRIPTION The AD79811 is a 16-bit, successive approximation, analog-to- digital converter (ADC) designed for high temperature operation. The AD7981 is capable of sample rates up to 600 kSPS while maintaining low power consumption from a single power supply, VDD. It is a fast throughput, high accuracy, high temperature, successive approximation register (SAR) ADC and packaged in a small form factor with a versatile serial port interface (SPI). On the CNV rising edge, the AD7981 samples an analog input, IN+, between 0 V and REF with respect to a ground sense, IN−. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD. The device power scales linearly with throughput. The 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. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO. For space constrained applications, the AD7981 is available in a 10-lead mini small outline package (MSOP) with operation specified from −55°C to +175°C. This package is designed for robustness at extreme temperatures, including monometallic wire bonding, and is qualified for up to 1000 hours of operation at the maximum temperature rating. The AD7981 is a member of a growing series of high temperature qualified products offered by Analog Devices, Inc. For a complete selection of available high temperature products, see the high temperature product list and qualification data available at www.analog.com/hightemp. 1 Protected by U.S. Patent 6,703,961. 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 ©2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
Аналогичный номер детали - AD7981HRMZ |
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Аналогичное описание - AD7981HRMZ |
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