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AD5663ARMZ-REEL7 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5663ARMZ-REEL7 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 24 page 2.7 V to 5.5 V, 250 μA, Rail-to-Rail Output, Dual 16-Bit nanoDAC® AD5663 Rev. 0 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 Low power, dual 16-bit nanoDAC Relative accuracy: ±12 LSBs maximum Guaranteed monotonic by design 10-lead MSOP and 3 mm × 3 mm LFCSP_WD 2.7 V to 5.5 V power supply Per channel power-down Power-on reset to zero scale or midscale Hardware LDAC and CLR functions Serial interface; up to 50 MHz APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators FUNCTIONAL BLOCK DIAGRAM INTERFACE LOGIC SCLK SYNC DIN CLR INPUT REGISTER INPUT REGISTER DAC REGISTER DAC REGISTER VDD GND POWER-ON RESET STRING DAC A STRING DAC B BUFFER BUFFER VREF POWER-DOWN LOGIC VOUTA VOUTB AD5663 LDAC LDAC Figure 1. Table 1. Related Devices Part No. Description AD5623R/AD5643R/AD5663R 2.7 V to 5.5 V, dual 12-/14-/16-bit DACs with internal reference GENERAL DESCRIPTION The AD5663, a member of the nanoDAC family, is a low power, dual, 16-bit buffered voltage-out DAC that operates from a single 2.7 V to 5.5 V supply and is guaranteed monotonic by design. The AD5663 requires an external reference voltage to set the output range of the DAC. The part incorporates a power-on reset circuit that ensures the DAC output powers up to 0 V or midscale (AD5663-1) and remains there until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides software-selectable output loads while in power-down mode. The low power consumption of this part in normal operation makes it ideally suited to portable, battery-operated equipment. The power consumption is 1.25 mW at 5 V, going down to 2.4 μW in power-down mode. The on-chip precision output amplifier of the AD5663 allows rail-to-rail output swing to be achieved. The AD5663 uses a versatile, 3-wire serial interface that operates at clock rates up to 50 MHz and is compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. PRODUCT HIGHLIGHTS 1. Dual 16-bit DAC; relative accuracy of ±12 LSBs maximum. 2. Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP_WD packages. 3. Low power; typically consumes 0.6 mW at 3 V and 1.25 mW at 5 V. 4. 7 μs maximum settling time. |
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