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AD5624R 数据表(PDF) 1 Page - Analog Devices |
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AD5624R 数据表(HTML) 1 Page - Analog Devices |
1 / 28 page Quad, 12-/14-/16-Bit nanoDACs® with 5 ppm/°C On-Chip Reference AD5624R/AD5644R/AD5664R 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, 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 and 3 mm × 3 mm LFCSP_WD 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 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 1.25V/2.5V REF STRING DAC A BUFFER VREFIN/VREFOUT 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 AD5624R/AD5644R/AD5664R POWER-DOWN LOGIC 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 and 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 compatible 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 and 10-lead, 3 mm × 3 mm, LFCSP_WD. 4. Low power, typically consumes 1.32 mW at 3 V and 2.25 mW at 5 V. |
类似零件编号 - AD5624R |
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类似说明 - AD5624R |
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