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AD5663RBRMZ-5REEL7 데이터시트(PDF) 1 Page - Analog Devices |
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AD5663RBRMZ-5REEL7 데이터시트(HTML) 1 Page - Analog Devices |
1 / 28 page Dual 12-/14-/16-Bit nanoDAC® with 5 ppm/°C On-Chip Reference AD5623R/AD5643R/AD5663R Rev. A 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, smallest pin-compatible, dual nanoDAC AD5663R: 16 bits AD5643R: 14 bits AD5623R: 12 bits User-selectable external or internal reference External reference default On-chip 1.25 V/2.5 V, 5 ppm/°C reference 10-lead MSOP and 3 mm × 3 mm LFCSP 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale Per channel power-down Serial interface up to 50 MHz Hardware LDAC and CLR functions APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators GENERAL DESCRIPTION The AD5623R/AD5643R/AD5663R, members of the nanoDAC family, are low power, dual 12-, 14-, and 16-bit buffered voltage- out digital-to-analog converters (DAC) that operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5623R/AD5643R/AD5663R have an on-chip reference. The AD5623R-3/AD5643R-3/AD5663R-3 have a 1.25 V, 5 ppm/°C reference, giving a full-scale output of 2.5 V; and the AD5623R-5/ AD5643R-5/AD5663R-5 have a 2.5 V, 5 ppm/°C reference, giving a full-scale output of 5 V. The on-chip reference is off at power-up, allowing the use of an external reference; and all devices can be operated from a single 2.7 V to 5.5 V supply. The internal reference is turned on by writing to the DAC. The parts incorporate 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 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. 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 VREFIN/VREFOUT POWER-DOWN LOGIC VOUTA VOUTB AD5623R/AD5643R/AD5663R LDAC LDAC 1.25V/2.5V REFERENCE Figure 1. Table 1. Related Devices Part No. Description AD5663 2.7 V to 5.5 V, dual 16-bit nanoDAC, with external reference The low power consumption of this part in normal operation makes it ideally suited to portable, battery-operated equipment. The AD5623R/AD5643R/AD5663R use a versatile, 3-wire serial interface that operates at clock rates up to 50 MHz, and they are compatible with standard SPI®, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing to be achieved. PRODUCT HIGHLIGHTS 1. Dual 12-, 14-, and 16-bit DAC. 2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference. 3. Available in 10-lead MSOP and 10-lead, 3 mm × 3 mm LFCSP. 4. Low power; typically consumes 0.6 mW at 3 V and 1.25 mW at 5 V. 5. 4.5 μs maximum settling time for the AD5623R. |
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