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AD5624BCPZ-REEL7 Folha de dados(PDF) 1 Page - Analog Devices |
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AD5624BCPZ-REEL7 Folha de dados(HTML) 1 Page - Analog Devices |
1 / 24 page 2.7 V to 5.5 V, 450 μA, Rail-to-Rail Output, Quad, 12-/16-Bit nanoDACs® AD5624/AD5664 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, quad nanoDACs AD5664: 16 bits AD5624: 12 bits Relative accuracy: ±12 LSBs max Guaranteed monotonic by design 10-lead MSOP and 3 mm × 3 mm LFCSP_WD 2.7 V to 5.5 V power supply Power-on reset to zero Per channel power-down 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 INPUT REGISTER DAC REGISTER VDD GND POWER-ON RESET STRING DAC A BUFFER VREF VOUTA INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTB INPUT REGISTER DAC REGISTER STRING DAC C BUFFER VOUTC INPUT REGISTER DAC REGISTER STRING DAC D BUFFER VOUTD AD5624/AD5664 POWER-DOWN LOGIC Figure 1. Table 1. Related Devices Part No. Description AD5624R/AD5644R/AD5664R 2.7 V to 5.5 V quad, 12-, 14-, 16-bit DACs with internal reference GENERAL DESCRIPTION The AD5624/AD5664, members of the nanoDAC family, are low power, quad, 12-, 16-bit buffered voltage-out DACs that operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5624/AD5664 require 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 and remains there until a valid write takes place. The parts contain 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 these parts in normal operation makes them ideally suited to portable battery-operated equipment. The power consumption is 2.25 mW at 5 V, going down to 2.4 μW in power-down mode. The AD5624/AD5664 on-chip precision output amplifier allows rail-to-rail output swing to be achieved. The AD5624/AD5664 use a versatile 3-wire serial interface that operates at clock rates up to 50 MHz, and are compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. PRODUCT HIGHLIGHTS 1. Relative accuracy: ±12 LSBs maximum. 2. Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm, LFCSP_WD. 3. Low power, typically consumes 1.32 mW at 3 V and 2.25 mW at 5 V. 4. Maximum settling time of 4.5 μs (AD5624) and 7 μs (AD5664). |
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