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AD5647R Dataheets PDF



Part Number AD5647R
Manufacturers Analog Devices
Logo Analog Devices
Description Dual 12-/14-/16-Bit nanoDACs
Datasheet AD5647R DatasheetAD5647R Datasheet (PDF)

Dual, 12-/14-/16-Bit nanoDACs® with 5 ppm/°C On-Chip Reference, I2C® Interface AD5627R/AD5647R/AD5667R, AD5627/AD5667 06342-001 06342-002 FEATURES Low power, smallest pin-compatible, dual nanoDACs AD5627R/AD5647R/AD5667R 12-/14-/16-bit On-chip 1.25 V/2.5 V, 5 ppm/°C reference AD5627/AD5667 12-/16-bit External reference only 3 mm x 3 mm LFCSP and 10-lead MSOP 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale Per channel power-down Hardware LDAC and CLR fun.

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Dual, 12-/14-/16-Bit nanoDACs® with 5 ppm/°C On-Chip Reference, I2C® Interface AD5627R/AD5647R/AD5667R, AD5627/AD5667 06342-001 06342-002 FEATURES Low power, smallest pin-compatible, dual nanoDACs AD5627R/AD5647R/AD5667R 12-/14-/16-bit On-chip 1.25 V/2.5 V, 5 ppm/°C reference AD5627/AD5667 12-/16-bit External reference only 3 mm x 3 mm LFCSP and 10-lead MSOP 2.7 V to 5.5 V power supply Guaranteed monotonic by design Power-on reset to zero scale 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 AD5627R/AD5647R/AD5667R, AD5627/AD5667 members of the nanoDAC family are low power, dual, 12-, 14-, 16-bit buffered voltage-out DACs with/without 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 I2Ccompatible serial interface. The AD5627R/AD5647R/AD5667R have an on-chip reference. The AD56x7RBCPZ have a 1.25 V, 5 ppm/°C reference, giving a full-scale output range of 2.5 V; the AD56x7RBRMZ have 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. The internal reference is enabled via a software write. The AD5667 and AD5627 require an external reference voltage to set the output range of the DAC. The AD56x7R/AD56x7 incorporate 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 perchannel power-down feature that reduces the current consumption of the device to 480 nA at 5 V and provides ADDR SCL SDA FUNCTIONAL BLOCK DIAGRAMS VDD GND VREFIN/VREFOUT AD5627R/AD5647R/AD5667R INPUT REGISTER DAC REGISTER 1.25V/2.5V REF STRING DAC A BUFFER INTERFACE LOGIC INPUT REGISTER DAC REGISTER STRING DAC B BUFFER VOUTA VOUTB POWER-ON RESET POWER-DOWN LOGIC ADDR SCL SDA LDAC CLR Figure 1. AD5627R/AD5647R/AD5667R VDD GND VREFIN AD5627/AD5667 INPUT REGISTER DAC REGISTER STRING DAC A BUFFER INTERFACE LOGIC INPUT REGISTER DAC REGISTER STRING DAC B BUFFER POWER-ON RESET POWER-DOWN LOGIC VOUTA VOUTB LDAC CLR Figure 2. AD5627/AD5667 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 on-chip precision output amplifier enables rail-to-rail output swing. The AD56x7R/AD56x7 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. AD5663 AD5623R/AD5643R/AD5663R AD5625R/AD5645R/AD5665R, AD5625/AD5665 Description 2.7 V to 5.5 V, dual 16-bit DAC, external reference, SPI® interface 2.7 V to 5.5 V, dual 12-, 14-, 16-bit DACs, internal reference, SPI interface 2.7 V to 5.5 V, quad 12-, 14-, 16-bit DACs, with/without internal reference, I2C interface Rev. 0 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. 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 ©2007 Analog Devices, Inc. All rights reserved. AD5627R/AD5647R/AD5667R, AD5627/AD5667 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagrams............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 AC Characteristics........................................................................ 5 I2C Timing Specifications............................................................ 6 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characterist.


AD5627R AD5647R AD5667R


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