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AD7989-1 Fiches technique(PDF) 1 Page - Analog Devices |
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AD7989-1 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 24 page 18-Bit, 100 kSPS/500 kSPS PulSAR ADCs in MSOP/LFCSP Data Sheet AD7989-1/AD7989-5 Rev. B 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 ©2014–2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Low power dissipation AD7989-1 400 μW at 100 kSPS typical (VDD only) 700 μW at 100 kSPS typical (total) AD7989-5 2 mW at 500 kSPS typical (VDD only) 3.5 mW at 500 kSPS typical (total) 18-bit resolution with no missing codes Throughput AD7989-1 100 kSPS AD7989-5 500 kSPS INL: ±1 LSB typical, 2 LSB maximum SNR: 98 dB at 1 kHz, VREF = 5 V typical SINAD: 97 dB at 1 kHz typical THD: −120 dB at 10 kHz typical Dynamic range: 99 dB at VREF = 5 V typical True differential analog input voltage 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, and 5 V logic interface Proprietary serial interface SPI-/QSPI™-/MICROWIRE™-/ DSP-compatible1 Ability to daisy-chain multiple ADCs 10-lead MSOP and 3 mm × 3 mm 10-Lead LFCSP APPLICATIONS Battery-powered equipment Data acquisition systems Medical instruments Seismic data acquisition systems GENERAL DESCRIPTION The AD7989-1/AD7989-5 are 18-bit, successive approximation, analog-to-digital converters (ADCs) that operate from a single power supply, VDD. The AD7989-1/AD7989-5 contain a low power, high speed, 18-bit sampling ADC and a versatile serial interface port. On the CNV rising edge, the AD7989-1/AD7989-5 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, VREF, is applied externally and can be set independent of the supply voltage, VDD. Its power scales linearly with throughput. The AD7989-1/AD7989-5 are serial peripheral interface (SPI)- compatible, which features the ability, using the SDI/CS input, to daisy-chain several ADCs on a single 3-wire bus. The AD7989-1/AD7989-5 are compatible with 1.8 V, 2.5 V, 3 V, and 5 V logic, using the separate VIO supply. The AD7989-1/AD7989-5 are 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 AD7989-12 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 Figure 1. 1 Protected by U.S. Patent 6,703,961. REF GND VDD IN+ IN– VIO SDI/CS SCK SDO CNV 1.8V TO 5.5V ADA4941-1 3- OR 4-WIRE INTERFACE (SPI, CS, DAISY CHAIN) 2.5V TO 5V 2.5V ±10V, ±5V, .. AD7989-1/ AD7989-5 |
Numéro de pièce similaire - AD7989-1 |
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Description similaire - AD7989-1 |
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