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AD5624R Datasheet(PDF) 1 Page - Analog Devices |
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AD5624R Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page Quad, 12-/14-/16-Bit nanoDACs with 5 ppm/°C On-Chip Reference Data Sheet AD5624R/AD5644R/AD5664R Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 Low power, smallest pin-compatible, quad nanoDACs AD5664R: 16 bits AD5644R: 14 bits AD5624R: 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; 10-lead, 3 mm × 3 mm LFCSP_WD; and 12-ball, 1.665 mm × 2.245 mm WLCSP 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 APPLICATIONS Process controls Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators FUNCTIONAL BLOCK DIAGRAM Figure 1. Table 1. Related Devices Part No. Description AD5624/AD5664 2.7 V to 5.5 V quad, 12-/16-bit DACs, external reference AD5666 2.7 V to 5.5 V quad, 16-bit DAC, internal reference, LDAC, CLR pins GENERAL DESCRIPTION The AD5624R/AD5644R/AD5664R, members of the nanoDAC® family, are low power, quad, 12-/14-/16-bit buffered voltage-out DACs. All devices operate from a single 2.7 V to 5.5 V supply and are guaranteed monotonic by design. The AD5624R/AD5644R/AD5664R have an on-chip reference. The AD56x4R-3 has a 1.25 V, 5 ppm/°C reference, giving a full- scale output range of 2.5 V; the AD56x4R-5 has a 2.5 V, 5 ppm/°C reference giving a full-scale output range of 5 V. The on-chip reference is off at power-up, allowing the use of an external reference; all devices can be operated from a single 2.7 V to 5.5 V supply. The internal reference is enabled via a software write. 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 part contains a per-channel 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 AD5624R/AD5644R/AD5664R use a versatile 3-wire serial interface that operates at clock rates up to 50 MHz, and is com- patible with standard SPI, QSPI™, MICROWIRE™, and DSP interface standards. The on-chip precision output amplifier enables rail-to-rail output swing. PRODUCT HIGHLIGHTS 1. Quad 12-/14-/16-bit DACs. 2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference. 3. Available in 10-lead MSOP; 10-lead, 3 mm × 3 mm LFCSP_WD; and 12-ball, 1.665 mm × 2.245 mm WLCSP. 4. Low power, typically consumes 1.32 mW at 3 V and 2.25 mW at 5 V. BUFFER BUFFER AD5624R/AD5644R/AD5664R 1.25V/2.5V REF VDD VREFIN/VREFOUT GND POWER- DOWN LOGIC POWER-ON LOGIC SCLK SYNC DIN STRING DAC A STRING DAC B STRING DAC C STRING DAC D DAC REGISTER DAC REGISTER DAC REGISTER DAC REGISTER INPUT REGISTER INPUT REGISTER INPUT REGISTER INPUT REGISTER INTERFACE LOGIC BUFFER BUFFER VOUTA VOUTB VOUTC VOUTD |
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