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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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AD7321 Datenblatt(PDF) 1 Page - Analog Devices |
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AD7321 Datenblatt(HTML) 1 Page - Analog Devices |
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1 / 37 page  500 kSPS, 2-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC Data Sheet AD7321 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 ©2006–2013 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 500 kSPS throughput rate 2 analog input channels with channel sequencer Single-ended, true differential, and pseudo differential analog input capability High analog input impedance Low power: 18 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 AD7321 Figure 1. GENERAL DESCRIPTION The AD73211 is a 2-channel, 12-bit plus sign successive approximation 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 development 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 AD7321 can accept true bipolar analog input signals. The AD7321 has four software-selectable input ranges, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V. Each analog input channel is indepen- dently programmed to one of the four input ranges. The analog input channels on the AD7321 are programmed to be single-ended, true differential, or pseudo differential. The ADC contains a 2.5 V internal reference. The AD7321 also allows for external reference operation. If a 3 V reference is applied to the REFIN/OUT pin, the AD7321 can accept a true bipolar ±12 V analog input. A minimum of ±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 500 kSPS. PRODUCT HIGHLIGHTS 1. The AD7321 can accept true bipolar analog input signals, ±10 V, ±5 V, ±2.5 V, and 0 V to +10 V unipolar signals. 2. The two analog inputs are configured as two single-ended inputs, one true differential input pair, or one pseudo differential input. 3. A 500 kSPS serial interface. SPI®-/QSPI™-/DSP-/ MICROWIRE™-compatible interface. 4. Low power, 18 mW, at a maximum throughput rate of 500 kSPS. 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 AD7322 1000 kSPS 12-bit plus sign 2 1 Protected by U.S. Patent No. 6,731,232. |
Ähnliche Teilenummer - AD7321_15 |
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Ähnliche Beschreibung - AD7321_15 |
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