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AD5629R Datenblatt(PDF) 1 Page - Analog Devices |
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AD5629R Datenblatt(HTML) 1 Page - Analog Devices |
1 / 32 page Octal, 12-/16-Bit, I2C, denseDACs with 5 ppm/°C On-Chip Reference Data Sheet AD5629R/AD5669R Rev. B 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 ©2010–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Low power octal DACs AD5629R: 12 bits AD5669R: 16 bits 2.6 mm × 2.6 mm 16-ball WLCSP 4 mm × 4 mm 16-lead LFCSP and 16-lead TSSOP On-chip 1.25 V/2.5 V, 5 ppm/°C reference Power down to 400 nA at 5 V, 200 nA at 3 V 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale or midscale 3 power-down functions Hardware A LDACE A and A CLRE A functions I2C-compatible serial interface supports standard (100 kHz) and fast (400 kHz) modes APPLICATIONS Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources FUNCTIONAL BLOCK DIAGRAM VDD 1.25V/2.5V REF VREFIN/VREFOUT LDAC LDAC CLR GND INPUT REGISTER DAC REGISTER STRING DAC A VOUTA BUFFER INPUT REGISTER DAC REGISTER STRING DAC B VOUTB BUFFER INPUT REGISTER DAC REGISTER STRING DAC C VOUTC BUFFER INPUT REGISTER DAC REGISTER STRING DAC D VOUTD BUFFER INPUT REGISTER DAC REGISTER STRING DAC E VOUTE BUFFER INPUT REGISTER DAC REGISTER STRING DAC F VOUTF BUFFER INPUT REGISTER DAC REGISTER STRING DAC G VOUTG BUFFER INPUT REGISTER DAC REGISTER STRING DAC H VOUTH BUFFER POWER-ON RESET POWER-DOWN LOGIC SCL SDA A0 AD5629R/AD5669R Figure 1. GENERAL DESCRIPTION The AD5629R/AD5669R devices are low power, octal, 12-/16- bit, buffered voltage-output DACs. All devices are guaranteed monotonic by design. The AD5629R/AD5669R have an on-chip reference with an internal gain of 2. The AD5629R-1/AD5669R-1 have a 1.25 V, 5 ppm/°C reference, giving a full-scale output range of 2.5 V. The AD5629R-2/AD5629R-3 and the AD5669R-2/AD5669R-3 have a 2.5 V 5 ppm/°C reference, giving a full-scale output range of 5 V depending on the option selected. Devices with 1.25 V reference selected operate from a single 2.7 V to 5.5 V supply. Devices with 2.5 V reference selected operate from 4.5 V to 5.5 V. The on-chip reference is off at power-up, allowing the use of an external reference. The internal reference is enabled via a software write. The parts incorporate a power-on reset circuit to ensure that the DAC output powers up to 0 V (AD5629R-1/AD5629R-2, AD5669R-1/AD5669R-2) or midscale (AD5629R-3/AD5669R-3) and remains powered up at this level until a valid write takes place. The part contains a power-down feature that reduces the current consumption of the device to 400 nA at 5 V and provides software-selectable output loads while in power-down mode for any or all DAC channels. PRODUCT HIGHLIGHTS 1. Octal, 12-/16-bit DACs. 2. On-chip 1.25 V/2.5 V, 5 ppm/°C reference. 3. Available in 16-lead LFCSP and TSSOP, and 16-ball WLCSP. 4. Power-on reset to 0 V or midscale. 5. Power-down capability. When powered down, the DAC typically consumes 200 nA at 3 V and 400 nA at 5 V. |
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Ähnliche Beschreibung - AD5629R |
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