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AD7685 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD7685 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 24 page 16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR® Differential ADC in MSOP/QFN Preliminary Technical Data AD7693 Rev. PrB Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES APPLICATION DIAGRAM 16-bit resolution with no missing codes AD7693 REF GND VDD IN+ IN– VIO SDI SCK SDO CNV +1.8V TO VDD 3- OR 4-WIRE INTERFACE (SPI, DAISY CHAIN, CS) +2.5V TO +5V ±10V, ±5V, ... +5V ADA4941-1 Throughput: 500 kSPS INL: +/-0.25 LSB typical, ±0.65 LSB max (±10 ppm of FSR) Dynamic range: 96.5 dB typical @ 500 kSPS SINAD: 96 dB typical @ 1 kHz, REF = 5V THD: −120 dB typical @ 1 kHz. REF = 5V True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Figure 2. Single-supply 5 V operation with Table 1. MSOP, QFN1 (LFCSP)/SOT-23 14-/16-/18-Bit PulSAR ADC 1.8 V/2.5 V/3 V/5 V logic interface Serial interface SPI®/QSPI™/MICROWIRE™/DSP-compatible 400 kSPS to 500 kSPS Daisy-chain multiple ADCs and busy indicator 100 kSPS 250 kSPS ADC Driver Power dissipation Type 4 mW @ 5 V/100 kSPS 18-Bit AD7691 AD7690 ADA4941-1 40 μW @ 5 V/1 kSPS ADA4841-x Standby current: 1 nA AD7684 AD7687 AD7688 10-lead package: MSOP (MSOP-8 size) and 3 mm × 3 mm QFN1 (LFCSP) (SOT-23 size) Pin-for-pin compatible with the AD7687, AD7688 and 18-bit AD7690 and AD7691 APPLICATIONS Battery-powered equipment Data acquisitions Seismic data acquisition systems DVMs Instrumentation Medical instruments Figure 1. Integral Nonlinearity vs. Code 16-Bit True Differential AD7693 ADA4941-1 ADA4841-x 16-Bit Pseudo AD7683 AD7685 AD7686 ADA4841-x AD7680 AD7694 Differential/ Unipolar 14-Bit AD7940 AD7942 AD7946 ADA4841-x 1 QFN package in development. Contact sales for samples and availability. GENERAL DESCRIPTION The AD7693 is a 16-bit, successive approximation, analog-to- digital converter (ADC) that operates from a single power supply, VDD. It contains a low power, high speed, 16-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. On the CNV rising edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and REF. The reference voltage, REF, is applied externally and can be set up to the supply voltage, VDD. Its 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 VIO supply. The AD7693 is housed in a 10-lead MSOP or a 10-lead QFN1 (LFCSP) with operation specified from −40°C to +85°C. 1 QFN package in development. Contact sales for samples and availability. |
Podobny numer części - AD7685 |
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Podobny opis - AD7685 |
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