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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD7322 датащи(PDF) 1 Page - Analog Devices |
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AD7322 датащи(HTML) 1 Page - Analog Devices |
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1 / 37 page  2-Channel, Software-Selectable, True Bipolar Input, 1 MSPS, 12-Bit Plus Sign ADC Data Sheet AD7322 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 ©2005–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES 12-bit plus sign SAR ADC True bipolar input ranges Software-selectable input ranges ±10 V, ±5 V, ±2.5 V, 0 V to +10 V 1 MSPS throughput rate Two analog input channels with channel sequencer Single-ended, true differential, and pseudo differential analog input capability High analog input impedance Low power: 21 mW Full power signal bandwidth: 22 MHz Internal 2.5 V reference High speed serial interface Power-down modes 14-lead TSSOP package i CMOS process technology FUNCTIONAL BLOCK DIAGRAM VIN0 DOUT SCLK CS DIN VDRIVE VIN1 VDD REFIN/OUT VCC AGND VSS DGND CONTROL LOGIC AND REGISTERS 13-BIT SUCCESSIVE APPROXIMATION ADC T/H 2.5V VREF I/P MUX CHANNEL SEQUENCER AD7322 Figure 1. GENERAL DESCRIPTION The AD73221 is a 2-channel, 12-bit plus sign, successive approx- imation analog-to-digital converter (ADC) designed on the iCMOS™ (industrial CMOS) process. iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the develop- ment of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, dramatically reduced power consumption, and reduced package size. The AD7322 can accept true bipolar analog input signals. The AD7322 has four software-selectable input ranges, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. Each analog input channel can be independently programmed to one of the four input ranges. The analog input channels on the AD7322 can be programmed to be single-ended, true differential, or pseudo differential. The ADC contains a 2.5 V internal reference. The AD7322 also allows for external reference operation. If a 3 V reference is applied to the REFIN/OUT pin, the AD7322 can accept a true bipolar ±12 V analog input. Minimum ±12 V VDD and VSS supplies are required for the ±12 V input range. The ADC has a high speed serial interface that can operate at throughput rates up to 1 MSPS. PRODUCT HIGHLIGHTS 1. The AD7322 can accept true bipolar analog input signals, ±10 V, ±5 V, and ±2.5 V, and 0 V to +10 V unipolar signals. 2. The two analog inputs can be configured as two single- ended inputs, one true differential input, or one pseudo differential input. 3. 1 MSPS serial interface. SPI-/QSPI™-/DSP-/MICROWIRE™- compatible interface. 4. Low power, 31 mW maximum, at 1 MSPS throughput rate. 5. Channel sequencer. Table 1. Similar Devices Device Number Throughput Rate Number of bits Number of Channels AD7329 1000 kSPS 12-bit plus sign 8 AD7328 1000 kSPS 12-bit plus sign 8 AD7327 500 kSPS 12-bit plus sign 8 AD7324 1000 kSPS 12-bit plus sign 4 AD7323 500 kSPS 12-bit plus sign 4 AD7321 500 kSPS 12-bit plus sign 2 1 Protected by U.S. Patent No. 6,731,232. |
Аналогичный номер детали - AD7322 |
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Аналогичное описание - AD7322 |
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