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AD5665RBRUZ-1

製品説明
仕様・特性

FEATURES FUNCTIONAL BLOCK DIAGRAMS VDD VREFIN/VREFOUT 1.25V/2.5V REF BUFFER INPUT REGISTER DAC REGISTER STRING DAC A INPUT REGISTER DAC REGISTER STRING DAC B INPUT REGISTER DAC REGISTER STRING DAC C INPUT REGISTER ADDR1 DAC REGISTER STRING DAC D VOUTA BUFFER ADDR2 SCL VOUTB BUFFER SDA VOUTC BUFFER POWER-ON RESET VOUTD POWER-DOWN LOGIC 06341-001 LDAC CLR POR NOTES 1. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-LEAD PACKAGE: ADDR2, LDAC, CLR, POR. Figure 1. AD5625R/AD5645R/AD5665R VDD GND VREFIN INPUT REGISTER DAC REGISTER STRING DAC A INPUT REGISTER DAC REGISTER STRING DAC B INPUT REGISTER DAC REGISTER STRING DAC C INPUT REGISTER APPLICATIONS DAC REGISTER STRING DAC D AD5625/AD5665 Process control Data acquisition systems Portable battery-powered instruments Digital gain and offset adjustment Programmable voltage and current sources Programmable attenuators BUFFER ADDR1 VOUTA BUFFER SCL 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 AD5625R/AD5645R/AD5665R 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 AD5625R/ AD5645R/AD5665R have a 2.5 V, 5 ppm/°C reference, giving a full-scale output range of 5 V. The WLCSP 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 device 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. VOUTB BUFFER SDA VOUTC BUFFER POWER-ON RESET VOUTD POWER-DOWN LOGIC LDAC CLR POR NOTES 1. THE FOLLOWING PINS ARE AVAILABLE ONLY ON 14-LEAD PACKAGE: ADDR2, LDAC, CLR, POR. 06341-002 ADDR2 GENERAL DESCRIPTION Rev. D GND AD5625R/AD5645R/AD5665R INTERFACE LOGIC 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 INTERFACE LOGIC Data Sheet Quad, 12-/14-/16-Bit nanoDACs with 5 ppm/°C On-Chip Reference, I2C Interface AD5625R/AD5645R/AD5665R, AD5625/AD5665 Figure 2. AD5625/AD5665 The AD5625R/AD5645R/AD5665R and AD5625/AD5665 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 Device Number AD5025/AD5045/AD5065 AD5624R/AD5644R/AD5664R, AD5624/AD5664 AD5627R/AD5647R/AD5667R, AD5627/AD5667 AD5666 Description Dual 12-/14-/16-bit DACs Quad SPI 12-/14-/16-bit DACs, with/without internal reference Dual I2C 12-/14-/16-bit DACs, with/without internal reference Quad SPI 16-bit DAC with internal reference Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2007-2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

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