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AD7693 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD7693 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 24 page 16-Bit, ±0.5 LSB, 500 kSPS PulSAR® Differential ADC in MSOP/LFCSP Data Sheet AD7693 FEATURES 16-bit resolution with no missing codes Throughput: 500 kSPS INL/DNL: ±0.25 LSB typ, ±0.5 LSB max (±8 ppm of FSR) Dynamic range: 96.5 dB SINAD: 96 dB at 1 kHz THD: −120 dB at 1 kHz True differential analog input range: ±VREF 0 V to VREF with VREF up to VDD on both inputs No pipeline delay Single-supply 5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface Proprietary serial interface SPI®-/QSPI™-/MICROWIRE™-/DSP-compatible1 Daisy-chain multiple ADCs, selectable busy indicator Power dissipation: 40 nJ/conversion 40 µW at 5 V/1 kSPS 4 mW at 5 V/100 kSPS 18 mW at 5 V/500 kSPS Standby current: 1 nA 10-lead package: MSOP (MSOP-8 size) and 3 mm × 3 mm LFCSP (SOT-23 size) Pin-for-pin compatible with the 16-bit AD7687 and AD7688 and the 18-bit AD7690 and AD7691 APPLICATIONS Battery-powered equipment Data acquisitions Seismic data acquisition systems DVMs Instrumentation Medical instruments 1.0 –1.0 0 65536 CODE 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 16384 32768 49152 POSITIVE INL = +0.17LSB NEGATIVE INL = –0.17LSB Figure 1. Integral Nonlinearity vs. Code APPLICATION DIAGRAM 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 Figure 2. Table 1. MSOP, LFCSP/SOT-23 14-/16-/18-Bit PulSAR ADC Type 100 kSPS 250 kSPS 400 kSPS to 500 kSPS ADC Driver 18-Bit AD7691 AD7690 ADA4941-1 ADA4841-x 16-Bit True Differential AD7684 AD7687 AD7688 AD7693 ADA4941-1 ADA4841-x 16-Bit Pseudo AD7683 AD7685 AD7686 ADA4841-x Differential/ Unipolar AD7680 AD7694 14-Bit AD7940 AD7942 AD7946 ADA4841-x 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. The reference voltage, VREF, is applied externally and can be set up to the supply voltage, VDD. 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 VREF about VREF/2. Its power scales linearly with throughput. Using the SDI input, the SPI-compatible serial interface also features the ability 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 LFCSP with operation specified from −40°C to +85°C. 1 Protected by U.S. Patent 6,703,961. Rev. B 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 ©2006–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
Số phần tương tự - AD7693_15 |
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Mô tả tương tự - AD7693_15 |
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