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AD5625RACPZ-REEL7 Datenblatt(PDF) 1 Page - Analog Devices |
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AD5625RACPZ-REEL7 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 36 page Quad, 12-/14-/16-Bit nanoDACs with 5 ppm/°C On-Chip Reference, I2C Interface Data Sheet AD5625R/AD5645R/AD5665R, AD5625/AD5665 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 ©2007-2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Low power, smallest pin-compatible, quad nanoDACs AD5625R/AD5645R/AD5665R 12-/14-/16-bit nanoDACs On-chip, 2.5 V, 5 ppm/°C reference in TSSOP On-chip, 2.5 V, 10 ppm/°C reference in LFCSP On-chip, 1.25 V, 10 ppm/°C reference in LFCSP AD5625/AD5665 12-/16-bit nanoDACs External reference only 3 mm × 3 mm, 10-lead LFCSP; 14-lead TSSOP; and 1.665 mm × 2.245 mm, 12-ball WLCSP 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale/midscale Per channel power-down Hardware LDAC and CLR functions I2C-compatible serial interface supports standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes 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 AD5625R/AD5645R/AD5665R and AD5625/AD5665 members of the nanoDAC® family are low power, quad, 12-/ 14-/16-bit, buffered voltage-out DACs with/without an on-chip reference. All devices operate from a single 2.7 V to 5.5 V supply, are guaranteed monotonic by design, and have an I2C-compatible serial interface. The AD5625R/AD5645R/AD5665R have an on-chip reference. The LFCSP versions of the AD56x5R have a 1.25 V or 2.5 V, 10 ppm/°C reference, giving a full-scale output range of 2.5 V or 5 V; the TSSOP versions of the AD56x5R have a 2.5 V, 5 ppm/°C refer- ence, giving a full-scale output range of 5 V. The WLCSP package has a 1.25 V reference. 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 AD5625/AD5665 require an external reference voltage to set the output range of the DAC. The part incorporates a power-on reset circuit that ensures that the DAC output powers up to 0 V (POR = GND) or midscale (POR = VDD) and remains there until a valid write occurs. The on-chip precision output amplifier enables rail-to-rail output swing. FUNCTIONAL BLOCK DIAGRAMS Figure 1. AD5625R/AD5645R/AD5665R Figure 2. AD5625/AD5665 The AD56x5R/AD56x5 use a 2-wire I2C-compatible serial interface that operates in standard (100 kHz), fast (400 kHz), and high speed (3.4 MHz) modes. Table 1. Related Devices Part No. Description AD5025/AD5045/AD5065 Dual 12-/14-/16-bit DACs AD5624R/AD5644R/AD5664R, AD5624/AD5664 Quad SPI 12-/14-/16-bit DACs, with/without internal reference AD5627R/AD5647R/AD5667R, AD5627/AD5667 Dual I2C 12-/14-/16-bit DACs, with/without internal reference AD5666 Quad SPI 16-bit DAC with internal reference SDA SCL ADDR1 ADDR2 VDD GND 1.25V/2.5V REF VREFIN/VREFOUT AD5625R/AD5645R/AD5665R INPUT REGISTER DAC REGISTER STRING DAC A VOUTA BUFFER LDAC CLR POR 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 NOTES 1. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-LEAD PACKAGE: ADDR2, LDAC, CLR, POR. POWER-ON RESET POWER-DOWN LOGIC SDA SCL ADDR1 ADDR2 VDD GND VREFIN AD5625/AD5665 INPUT REGISTER DAC REGISTER STRING DAC A VOUTA BUFFER LDAC CLR POR 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 NOTES 1. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-LEAD PACKAGE: ADDR2, LDAC, CLR, POR. POWER-ON RESET POWER-DOWN LOGIC |
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