Dual, Low Power, 8-/10-/12-/14-Bit TxDAC Digital-to-Analog Converters Data Sheet AD9714/AD9715/AD9716/AD9717 FEATURES GENERAL DESCRIPTION Power dissipation 3.3 V, 2 mA output The AD9714/AD9715/AD9716/AD9717 are pin-compatible, 37 mW 10 MSPS dual, 8-/10-/12-/14-bit, low power digital-to-analog converters 86 mW 125 MSPS (DACs) that provide a sample rate of 125 MSPS. These TxDAC Sleep mode: <3 mW 3.3 V converters are optimized for the transmit signal path of commu- Supply voltage: 1.8 V to 3.3 V nication systems. All the devices share the same interface, package, SFDR to Nyquist and pinout, providing an upward or downward component 84 dBc 1 MHz output selection path based on performance, resolution, and cost. 75 dBc 10 MHz output The AD9714/AD9715/AD9716/AD9717 offer exceptional ac and AD9717 NSD 1 MHz output, 125 MSPS, 2 mA: 151 dBc/Hz dc performance and support update rates up to 125 MSPS. Differential current outputs: 1 mA to 4 mA The flexible power supply operating range of 1.8 V to 3.3 V and 2 on-chip auxiliary DACs low power dissipation of the AD9714/AD9715/AD9716/AD9717 CMOS inputs with single-port operation make them well-suited for portable and low power applications. Output common mode: adjustable 0 V to 1.2 V Small footprint 40-lead LFCSP RoHS-compliant package PRODUCT HIGHLIGHTS APPLICATIONS 1. Low Power. DACs operate on a single 1.8 V to 3.3 V supply total power Wireless infrastructures consumption reduces to 35 mW at 125 MSPS with a 1.8 V Picocell, femtocell base stations supply. Sleep and power-down modes are provided for low Medical instrumentation power idle periods. Ultrasound transducer excitation 2. CMOS Clock Input. Portable instrumentation High speed, single-ended CMOS clock input supports a Signal generators, arbitrary waveform generators 125 MSPS conversion rate. 3. Easy Interfacing to Other Components. Adjustable output common mode from 0 V to 1.2 V allows easy interfacing to other components that accept common- mode levels greater than 0 V. Rev. B 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20082018 Analog Devices, Inc. All rights reserved. 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. Technical Support www.analog.com AD9714/AD9715/AD9716/AD9717 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Estimating the Overall DAC Pipeline Delay........................... 42 Applications ....................................................................................... 1 Reference Operation .................................................................. 43 General Description ......................................................................... 1 Reference Control Amplifier .................................................... 43 Product Highlights ........................................................................... 1 DAC Transfer Function ............................................................. 44 Revision History ............................................................................... 3 Analog Output ............................................................................ 44 Functional Block Diagram .............................................................. 4 Self-Calibration ........................................................................... 45 Specifications ..................................................................................... 5 Coarse Gain Adjustment ........................................................... 46 DC Specifications ......................................................................... 5 Using the Internal Termination Resistors ............................... 47 Digital Specifications ................................................................... 7 Applications Information .............................................................. 48 AC Specifications .......................................................................... 8 Output Configurations .............................................................. 48 Absolute Maximum Ratings ............................................................ 9 Differential Coupling Using a Transformer ............................... 48 Thermal Resistance ...................................................................... 9 Single-Ended Buffered Output Using an Op Amp ................ 48 ESD Caution .................................................................................. 9 Differential Buffered Output Using an Op Amp ................... 49 Pin Configurations and Function Descriptions ......................... 10 Auxiliary DACs........................................................................... 49 Typical Performance Characteristics ........................................... 18 DAC-to-Modulator Interfacing ................................................ 50 Terminology .................................................................................... 31 Correcting for Nonideal Performance of Quadrature Modulators on the IF-to-RF Conversion ................................ 50 Theory of Operation ...................................................................... 32 I/Q-Channel Gain Matching .................................................... 50 Serial Peripheral Interface (SPI) ................................................... 33 LO Feedthrough Compensation .............................................. 51 General Operation of the Serial Interface ............................... 33 Results of Gain and Offset Correction .................................... 51 Instruction Byte .......................................................................... 33 Modifying the Evaluation Board to Use the ADL5370 On- Serial Interface Port Pin Descriptions ..................................... 33 Board Quadrature Modulator................................................... 52 MSB/LSB Transfers..................................................................... 34 Evaluation Board Shematics and Artwork .................................. 53 Serial Port Operation ................................................................. 34 Schematics ................................................................................... 53 Pin Mode ..................................................................................... 34 Silkscreens ................................................................................... 61 SPI Register Map ............................................................................. 35 Bill of Materials ............................................................................... 76 SPI Register Descriptions .............................................................. 36 Outline Dimensions ....................................................................... 79 Digital Interface Operation ........................................................... 40 Ordering Guide .......................................................................... 79 Digital Data Latching and Retimer Block ............................... 41 Rev. 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